Articles | Volume 23, issue 1
https://doi.org/10.5194/acp-23-501-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-501-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A modeling study of an extreme rainfall event along the northern coast of Taiwan on 2 June 2017
Department of Earth Sciences, National Taiwan Normal University,
Taipei 11677, Taiwan
Ting-Yu Yeh
Department of Earth Sciences, National Taiwan Normal University,
Taipei 11677, Taiwan
Chih-Sheng Chang
Department of Earth Sciences, National Taiwan Normal University,
Taipei 11677, Taiwan
Ming-Siang Li
Department of Earth Sciences, National Taiwan Normal University,
Taipei 11677, Taiwan
Kazuhisa Tsuboki
Institute for Space–Earth Environmental Research, Nagoya University,
Nagoya 464-8601, Japan
Ching-Hwang Liu
Department of Atmospheric Sciences, Chinese Culture University,
Taipei 11114, Taiwan
Related authors
Chung-Chieh Wang, Duc Van Nguyen, Thang Van Vu, Pham Thi Thanh Nga, Pi-Yu Chuang, and Kien Ba Truong
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-192, https://doi.org/10.5194/nhess-2023-192, 2023
Preprint under review for NHESS
Short summary
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CReSS well predict the rainfall fields at the short-range forecast (less than 3 days) for 10 December. These good results are due to the model having good predicts of other meteorological variables, such as surface wind fields. These prediction skills are reducing at lead time longer than 3 days. The 24-hour rainfall is very sensitive with initial conditions, not only at the lower level but also at the upper level. The ensemble-based sensitivity is decreased with the increasing lead time.
Chung-Chieh Wang and Duc Van Nguyen
Nat. Hazards Earth Syst. Sci., 23, 771–788, https://doi.org/10.5194/nhess-23-771-2023, https://doi.org/10.5194/nhess-23-771-2023, 2023
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A record-breaking rainfall event over central Vietnam is investigated. Key factors include the combined effect of northeasterly wind, easterly wind blowing to central Vietnam from the western North Pacific (WNP), southeasterly wind, local topography, and high sea surface temperature (SST) over WNP and the South China Sea (SCS). The cloud-resolving storm simulator (CReSS) is applied to simulate this event. The results show that the model mostly captured the quantitative rainfall of this event.
Chung-Chieh Wang, Pi-Yu Chuang, Shi-Ting Chen, Dong-In Lee, and Kazuhisa Tsuboki
Nat. Hazards Earth Syst. Sci., 22, 1795–1817, https://doi.org/10.5194/nhess-22-1795-2022, https://doi.org/10.5194/nhess-22-1795-2022, 2022
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In this study, cloud-resolving simulations are performed under idealized and uniform southwesterly flow direction and speed to investigate the rainfall regimes in the Mei-yu season and the role of complex mesoscale topography on rainfall without the influence of unwanted disturbances, including a low-Froude number regime where the thermodynamic effects and island circulation dominate, a high-Froude number regime where topographic rainfall in a flow-over scenario prevails, and a mixed regime.
Chung-Chieh Wang, Pi-Yu Chuang, Chih-Sheng Chang, Kazuhisa Tsuboki, Shin-Yi Huang, and Guo-Chen Leu
Nat. Hazards Earth Syst. Sci., 22, 23–40, https://doi.org/10.5194/nhess-22-23-2022, https://doi.org/10.5194/nhess-22-23-2022, 2022
Short summary
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This study indicated that the Cloud-Resolving Storm Simulator (CReSS) model significantly improved heavy-rainfall quantitative precipitation forecasts in the Taiwan Mei-yu season. At high resolution, the model has higher threat scores and is more skillful in predicting larger rainfall events compared to smaller ones. And the strength of the model mainly lies in the topographic rainfall rather than less predictable and migratory events due to nonlinearity.
Chung-Chieh Wang, Bing-Kui Chiou, George Tai-Jen Chen, Hung-Chi Kuo, and Ching-Hwang Liu
Atmos. Chem. Phys., 16, 12359–12382, https://doi.org/10.5194/acp-16-12359-2016, https://doi.org/10.5194/acp-16-12359-2016, 2016
Short summary
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In this study, the back-building process of a quasistationary convective line with extreme rainfall is investigated using a cloud model. At the initiation stage of new cells, thermodynamic processes of near-surface latent heating coupled with adiabatic cooling above along the convergence line, rather than dynamic pressure perturbations, are found to be important. The stronger uplift and cooling aloft provided by old cells made their upstream areas more favorable for new cell development.
Jong-Hoon Jeong, Dong-In Lee, Chung-Chieh Wang, and In-Seong Han
Nat. Hazards Earth Syst. Sci., 16, 927–939, https://doi.org/10.5194/nhess-16-927-2016, https://doi.org/10.5194/nhess-16-927-2016, 2016
Short summary
Short summary
An extreme rainfall-producing mesoscale convective system (MCS) associated with the Changma front in south-eastern South Korea was investigated using observational data. The aim of the present study is to analyze and better understand the synoptic and mesoscale environment and the behaviour of the MCS causing natural hazards over South Korea.
C.-C. Wang, H.-C. Kuo, R. H. Johnson, C.-Y. Lee, S.-Y. Huang, and Y.-H. Chen
Atmos. Chem. Phys., 15, 11097–11115, https://doi.org/10.5194/acp-15-11097-2015, https://doi.org/10.5194/acp-15-11097-2015, 2015
Hung-Chi Kuo, Ting-Shuo Yo, Hungjui Yu, Shih-Hao Su, Ching-Hwang Liu, and Po-Hsiung Lin
EGUsphere, https://doi.org/10.5194/egusphere-2024-661, https://doi.org/10.5194/egusphere-2024-661, 2024
This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
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The study introduces "Storm Tracker," a budget-friendly device for weather observation. It highlights the calibration and testing against more expensive devices, ensuring its accuracy for temperature and humidity. This innovation could improve weather forecasting by making detailed atmospheric data more accessible, especially in challenging regions. Through rigorous comparison and enhancement, "Storm Tracker" promises to improve disaster preparedness and understanding of local weather patterns.
Chung-Chieh Wang, Duc Van Nguyen, Thang Van Vu, Pham Thi Thanh Nga, Pi-Yu Chuang, and Kien Ba Truong
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-192, https://doi.org/10.5194/nhess-2023-192, 2023
Preprint under review for NHESS
Short summary
Short summary
CReSS well predict the rainfall fields at the short-range forecast (less than 3 days) for 10 December. These good results are due to the model having good predicts of other meteorological variables, such as surface wind fields. These prediction skills are reducing at lead time longer than 3 days. The 24-hour rainfall is very sensitive with initial conditions, not only at the lower level but also at the upper level. The ensemble-based sensitivity is decreased with the increasing lead time.
Chung-Chieh Wang and Duc Van Nguyen
Nat. Hazards Earth Syst. Sci., 23, 771–788, https://doi.org/10.5194/nhess-23-771-2023, https://doi.org/10.5194/nhess-23-771-2023, 2023
Short summary
Short summary
A record-breaking rainfall event over central Vietnam is investigated. Key factors include the combined effect of northeasterly wind, easterly wind blowing to central Vietnam from the western North Pacific (WNP), southeasterly wind, local topography, and high sea surface temperature (SST) over WNP and the South China Sea (SCS). The cloud-resolving storm simulator (CReSS) is applied to simulate this event. The results show that the model mostly captured the quantitative rainfall of this event.
Chung-Chieh Wang, Pi-Yu Chuang, Shi-Ting Chen, Dong-In Lee, and Kazuhisa Tsuboki
Nat. Hazards Earth Syst. Sci., 22, 1795–1817, https://doi.org/10.5194/nhess-22-1795-2022, https://doi.org/10.5194/nhess-22-1795-2022, 2022
Short summary
Short summary
In this study, cloud-resolving simulations are performed under idealized and uniform southwesterly flow direction and speed to investigate the rainfall regimes in the Mei-yu season and the role of complex mesoscale topography on rainfall without the influence of unwanted disturbances, including a low-Froude number regime where the thermodynamic effects and island circulation dominate, a high-Froude number regime where topographic rainfall in a flow-over scenario prevails, and a mixed regime.
Chung-Chieh Wang, Pi-Yu Chuang, Chih-Sheng Chang, Kazuhisa Tsuboki, Shin-Yi Huang, and Guo-Chen Leu
Nat. Hazards Earth Syst. Sci., 22, 23–40, https://doi.org/10.5194/nhess-22-23-2022, https://doi.org/10.5194/nhess-22-23-2022, 2022
Short summary
Short summary
This study indicated that the Cloud-Resolving Storm Simulator (CReSS) model significantly improved heavy-rainfall quantitative precipitation forecasts in the Taiwan Mei-yu season. At high resolution, the model has higher threat scores and is more skillful in predicting larger rainfall events compared to smaller ones. And the strength of the model mainly lies in the topographic rainfall rather than less predictable and migratory events due to nonlinearity.
Chung-Chieh Wang, Bing-Kui Chiou, George Tai-Jen Chen, Hung-Chi Kuo, and Ching-Hwang Liu
Atmos. Chem. Phys., 16, 12359–12382, https://doi.org/10.5194/acp-16-12359-2016, https://doi.org/10.5194/acp-16-12359-2016, 2016
Short summary
Short summary
In this study, the back-building process of a quasistationary convective line with extreme rainfall is investigated using a cloud model. At the initiation stage of new cells, thermodynamic processes of near-surface latent heating coupled with adiabatic cooling above along the convergence line, rather than dynamic pressure perturbations, are found to be important. The stronger uplift and cooling aloft provided by old cells made their upstream areas more favorable for new cell development.
Jong-Hoon Jeong, Dong-In Lee, Chung-Chieh Wang, and In-Seong Han
Nat. Hazards Earth Syst. Sci., 16, 927–939, https://doi.org/10.5194/nhess-16-927-2016, https://doi.org/10.5194/nhess-16-927-2016, 2016
Short summary
Short summary
An extreme rainfall-producing mesoscale convective system (MCS) associated with the Changma front in south-eastern South Korea was investigated using observational data. The aim of the present study is to analyze and better understand the synoptic and mesoscale environment and the behaviour of the MCS causing natural hazards over South Korea.
C.-C. Wang, H.-C. Kuo, R. H. Johnson, C.-Y. Lee, S.-Y. Huang, and Y.-H. Chen
Atmos. Chem. Phys., 15, 11097–11115, https://doi.org/10.5194/acp-15-11097-2015, https://doi.org/10.5194/acp-15-11097-2015, 2015
Related subject area
Subject: Clouds and Precipitation | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
Above-cloud concentrations of cloud condensation nuclei help to sustain some Arctic low-level clouds
Contrail formation on ambient aerosol particles for aircraft with hydrogen combustion: a box model trajectory study
Effects of intermittent aerosol forcing on the stratocumulus-to-cumulus transition
Cloud properties and their projected changes in CMIP models with low to high climate sensitivity
Water isotopic characterisation of the cloud–circulation coupling in the North Atlantic trades – Part 2: The imprint of the atmospheric circulation at different scales
Impact of urban land use on mean and heavy rainfall during the Indian summer monsoon
Distribution and morphology of non-persistent and persistent contrail formation areas in ERA5
Towards a more reliable forecast of ice supersaturation: concept of a one-moment ice-cloud scheme that avoids saturation adjustment
Opinion: Tropical cirrus – from micro-scale processes to climate-scale impacts
Variability of the properties of the distribution of the relative humidity with respect to ice: Implications for contrail formation
Developing a climatological simplification of aerosols to enter the cloud microphysics of a global climate model
Water isotopic characterisation of the cloud–circulation coupling in the North Atlantic trades – Part 1: A process-oriented evaluation of COSMOiso simulations with EUREC4A observations
Simulating the seeder-feeder impacts on cloud ice and precipitation over the Alps
Assimilation of 3D polarimetric microphysical retrievals in a convective-scale NWP system
Sensitivity of cloud-phase distribution to cloud microphysics and thermodynamics in simulated deep convective clouds and SEVIRI retrievals
Interactions between trade-wind clouds and local forcings over the Great Barrier Reef: A case study using convection-permitting simulations
Assessing the destructiveness of tropical cyclones induced by anthropogenic aerosols in an atmosphere–ocean coupled framework
Opinion: A critical evaluation of the evidence for aerosol invigoration of deep convection
Impact of ice multiplication on the cloud electrification of a cold-season thunderstorm: a numerical case study
Historical (1960–2014) lightning and LNOx trends and their controlling factors in a chemistry–climate model
The chance of freezing – a conceptional study to parameterize temperature-dependent freezing by including randomness of ice-nucleating particle concentrations
Evaluation of hygroscopic cloud seeding in warm-rain processes by a hybrid microphysics scheme using a Weather Research and Forecasting (WRF) model: a real case study
Effects of longwave radiative cooling on advection fog over the Northwest Pacific Ocean: Observations and large eddy simulations
Radiation fog properties in two consecutive events under polluted and clean conditions in the Yangtze River Delta, China: a simulation study
A bin microphysics parcel model investigation of secondary ice formation in an idealised shallow convective cloud
Influence of atmospheric rivers and associated weather systems on precipitation in the Arctic
Insights of warm-cloud biases in Community Atmospheric Model 5 and 6 from the single-column modeling framework and Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) observations
Interaction of microphysics and dynamics in a warm conveyor belt simulated with the ICOsahedral Nonhydrostatic (ICON) model
Does prognostic seeding along flight tracks produce the desired effects of cirrus cloud thinning?
Large-eddy simulation of a two-layer boundary-layer cloud system from the Arctic Ocean 2018 expedition
Opposing trends of cloud coverage over land and ocean under global warming
Aerosol–cloud–radiation interaction during Saharan dust episodes: the dusty cirrus puzzle
Aerosol–cloud impacts on aerosol detrainment and rainout in shallow maritime tropical clouds
Mixed-phase direct numerical simulation: ice growth in cloud-top generating cells
Aerosol impacts on the entrainment efficiency of Arctic mixed-phase convection in a simulated air mass over open water
Evaluating Arctic clouds modelled with the Unified Model and Integrated Forecasting System
Evaluation of aerosol–cloud interactions in E3SM using a Lagrangian framework
Cloud response to co-condensation of water and organic vapors over the boreal forest
Impact of formulations of the homogeneous nucleation rate on ice nucleation events in cirrus
Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder–feeder mechanism: a case study for the 2015 Cumbria flood
Aerosol–precipitation elevation dependence over the central Himalayas using cloud-resolving WRF-Chem numerical modeling
Machine learning of cloud types in satellite observations and climate models
Long-term upper-troposphere climatology of potential contrail occurrence over the Paris area derived from radiosonde observations
Equilibrium climate sensitivity increases with aerosol concentration due to changes in precipitation efficiency
Southern Ocean cloud and shortwave radiation biases in a nudged climate model simulation: does the model ever get it right?
Aerosol characteristics and polarimetric signatures for a deep convective storm over the northwestern part of Europe – modeling and observations
Evaluation of tropical water vapour from CMIP6 global climate models using the ESA CCI Water Vapour climate data records
Aerosol–stratocumulus interactions: towards a better process understanding using closures between observations and large eddy simulations
The impacts of secondary ice production on microphysics and dynamics in tropical convection
Cloud adjustments from large-scale smoke–circulation interactions strongly modulate the southeastern Atlantic stratocumulus-to-cumulus transition
Lucas J. Sterzinger and Adele L. Igel
Atmos. Chem. Phys., 24, 3529–3540, https://doi.org/10.5194/acp-24-3529-2024, https://doi.org/10.5194/acp-24-3529-2024, 2024
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Using idealized large eddy simulations, we find that clouds forming in the Arctic in environments with low concentrations of aerosol particles may be sustained by mixing in new particles through the cloud top. Observations show that higher concentrations of these particles regularly exist above cloud top in concentrations that are sufficient to promote this sustenance.
Andreas Bier, Simon Unterstrasser, Josef Zink, Dennis Hillenbrand, Tina Jurkat-Witschas, and Annemarie Lottermoser
Atmos. Chem. Phys., 24, 2319–2344, https://doi.org/10.5194/acp-24-2319-2024, https://doi.org/10.5194/acp-24-2319-2024, 2024
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Using hydrogen as aviation fuel affects contrails' climate impact. We study contrail formation behind aircraft with H2 combustion. Due to the absence of soot emissions, contrail ice crystals are assumed to form only on ambient particles mixed into the plume. The ice crystal number, which strongly varies with temperature and aerosol number density, is decreased by more than 80 %–90 % compared to kerosene contrails. However H2 contrails can form at lower altitudes due to higher H2O emissions.
Prasanth Prabhakaran, Fabian Hoffmann, and Graham Feingold
Atmos. Chem. Phys., 24, 1919–1937, https://doi.org/10.5194/acp-24-1919-2024, https://doi.org/10.5194/acp-24-1919-2024, 2024
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In this study, we explore the impact of deliberate aerosol perturbation in the northeast Pacific region using large-eddy simulations. Our results show that cloud reflectivity is sensitive to the aerosol sprayer arrangement in the pristine system, whereas in the polluted system it is largely proportional to the total number of aerosol particles injected. These insights would aid in assessing the efficiency of various aerosol injection strategies for climate intervention applications.
Lisa Bock and Axel Lauer
Atmos. Chem. Phys., 24, 1587–1605, https://doi.org/10.5194/acp-24-1587-2024, https://doi.org/10.5194/acp-24-1587-2024, 2024
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Climate model simulations still show a large range of effective climate sensitivity (ECS) with high uncertainties. An important contribution to ECS is cloud climate feedback. We investigate the representation of cloud physical and radiative properties from Coupled Model Intercomparison Project models grouped by ECS. We compare the simulated cloud properties of today’s climate from three ECS groups and quantify how the projected changes in cloud properties and cloud radiative effects differ.
Leonie Villiger and Franziska Aemisegger
Atmos. Chem. Phys., 24, 957–976, https://doi.org/10.5194/acp-24-957-2024, https://doi.org/10.5194/acp-24-957-2024, 2024
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Three numerical simulations performed with an isotope-enabled weather forecast model are used to investigate the cloud–circulation coupling between shallow trade-wind cumulus clouds and atmospheric circulations on different scales. It is shown that stable water isotopes near cloud base in the tropics reflect (1) the diel cycle of the atmospheric circulation, which drives the formation and dissipation of clouds, and (2) changes in the large-scale circulation over the North Atlantic.
Renaud Falga and Chien Wang
Atmos. Chem. Phys., 24, 631–647, https://doi.org/10.5194/acp-24-631-2024, https://doi.org/10.5194/acp-24-631-2024, 2024
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The impact of urban land use on regional meteorology and rainfall during the Indian summer monsoon has been assessed in this study. Using a cloud-resolving model centered around Kolkata, we have shown that the urban heat island effect led to a rainfall enhancement via the amplification of convective activity, especially during the night. Furthermore, the results demonstrated that the kinetic effect of the city induced the initiation of a nighttime storm.
Kevin Wolf, Nicolas Bellouin, and Olivier Boucher
EGUsphere, https://doi.org/10.5194/egusphere-2023-3086, https://doi.org/10.5194/egusphere-2023-3086, 2024
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The contrail formation potential and its tempo-spatial distribution are estimated for the North Atlantic flight corridor. Meteorological conditions of temperature and relative humidity are taken from the ERA5 re-analysis and IAGOS. Based on IAGOS flight tracks, crossing length, size, orientation, frequency of occurrence, and overlap of persistent contrail formation areas are determined. The presented conclusions might provide a guide for statistical flight track optimization to reduce contrails.
Dario Sperber and Klaus Gierens
Atmos. Chem. Phys., 23, 15609–15627, https://doi.org/10.5194/acp-23-15609-2023, https://doi.org/10.5194/acp-23-15609-2023, 2023
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A significant share of aviation's climate impact is due to persistent contrails. Avoiding their creation is a step toward sustainable air transportation. For this purpose, a reliable forecast of so-called ice-supersaturated regions is needed, which then allows one to plan aircraft routes without persistent contrails. Here, we propose a method that leads to the better prediction of ice-supersaturated regions.
Blaž Gasparini, Sylvia C. Sullivan, Adam B. Sokol, Bernd Kärcher, Eric Jensen, and Dennis L. Hartmann
Atmos. Chem. Phys., 23, 15413–15444, https://doi.org/10.5194/acp-23-15413-2023, https://doi.org/10.5194/acp-23-15413-2023, 2023
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Tropical cirrus clouds are essential for climate, but our understanding of these clouds is limited due to their dependence on a wide range of small- and large-scale climate processes. In this opinion paper, we review recent advances in the study of tropical cirrus clouds, point out remaining open questions, and suggest ways to resolve them.
Sidiki Sanogo, Olivier Boucher, Nicolas Bellouin, Audran Borella, Kevin Wolf, and Susanne Rohs
EGUsphere, https://doi.org/10.5194/egusphere-2023-2601, https://doi.org/10.5194/egusphere-2023-2601, 2023
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Relative humidity relative to ice (RHi) is a key variable in the formation of cirrus clouds and contrails. This study shows that the properties of the probability density function of RHi differ between the tropics and higher latitudes. In link with RHi and temperature variability, aircraft are likely to produce more contrails with bioethanol and hydrogen as fuel. The impact of this fuel change decreases with decreasing pressure levels, but increases from high latitudes to the tropics.
Ulrike Proske, Sylvaine Ferrachat, and Ulrike Lohmann
EGUsphere, https://doi.org/10.5194/egusphere-2023-2783, https://doi.org/10.5194/egusphere-2023-2783, 2023
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Climate models include treatment of aerosol particles because these influence clouds and radiation. Over time their representation has grown increasingly detailed. This complexity may hinder our understanding of model behaviour. Thus here we simplify the aerosol representation of our climate model by prescribing a mean concentration, which saves runtime and helps to discover unexpected model behaviour. We conclude that simplifications provide a new perspective for model study and development.
Leonie Villiger, Marina Dütsch, Sandrine Bony, Marie Lothon, Stephan Pfahl, Heini Wernli, Pierre-Etienne Brilouet, Patrick Chazette, Pierre Coutris, Julien Delanoë, Cyrille Flamant, Alfons Schwarzenboeck, Martin Werner, and Franziska Aemisegger
Atmos. Chem. Phys., 23, 14643–14672, https://doi.org/10.5194/acp-23-14643-2023, https://doi.org/10.5194/acp-23-14643-2023, 2023
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This study evaluates three numerical simulations performed with an isotope-enabled weather forecast model and investigates the coupling between shallow trade-wind cumulus clouds and atmospheric circulations on different scales. We show that the simulations reproduce key characteristics of shallow trade-wind clouds as observed during the field experiment EUREC4A and that the spatial distribution of stable-water-vapour isotopes is shaped by the overturning circulation associated with these clouds.
Zane Dedekind, Ulrike Proske, Sylvaine Ferrachat, Ulrike Lohmann, and David Neubauer
EGUsphere, https://doi.org/10.5194/egusphere-2023-874, https://doi.org/10.5194/egusphere-2023-874, 2023
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Ice particles precipitating into lower clouds from an upper cloud, the seeder-feeder process, can enhance precipitation. A numerical modeling study conducted in the Swiss Alps found that 48 % of observed clouds were overlapping, in which the seeder-feeder process occurred 10 % of these clouds. Inhibiting the seeder-feeder process reduced the surface precipitation and ice particle growth rates, which were further reduced when additional ice multiplication processes were included in the model.
Lucas Reimann, Clemens Simmer, and Silke Trömel
Atmos. Chem. Phys., 23, 14219–14237, https://doi.org/10.5194/acp-23-14219-2023, https://doi.org/10.5194/acp-23-14219-2023, 2023
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Polarimetric radar observations were assimilated for the first time in a convective-scale numerical weather prediction system in Germany and their impact on short-term precipitation forecasts was evaluated. The assimilation was performed using microphysical retrievals of liquid and ice water content and yielded slightly improved deterministic 9 h precipitation forecasts for three intense summer precipitation cases with respect to the assimilation of radar reflectivity alone.
Cunbo Han, Corinna Hoose, Martin Stengel, Quentin Coopman, and Andrew Barrett
Atmos. Chem. Phys., 23, 14077–14095, https://doi.org/10.5194/acp-23-14077-2023, https://doi.org/10.5194/acp-23-14077-2023, 2023
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Cloud phase has been found to significantly impact cloud thermodynamics and Earth’s radiation budget, and various factors influence it. This study investigates the sensitivity of the cloud-phase distribution to the ice-nucleating particle concentration and thermodynamics. Multiple simulation experiments were performed using the ICON model at the convection-permitting resolution of 1.2 km. Simulation results were compared to two different retrieval products based on SEVIRI measurements.
Wenhui Zhao, Yi Huang, Steven Thomas Siems, Michael James Manton, and Daniel Patrick Harrison
EGUsphere, https://doi.org/10.5194/egusphere-2023-2633, https://doi.org/10.5194/egusphere-2023-2633, 2023
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We studied how shallow clouds and rain behave over the Great Barrier Reef (GBR) using a detailed weather model. We found that the shape of the land, especially mountains, and particles in the air play big roles in influencing these clouds. Surprisingly, the sea's temperature had a smaller effect. Our research helps us understand the GBR's climate and how various factors can influence it, where the importance of the local cloud in thermal coral bleaching has recently been identified.
Yun Lin, Yuan Wang, Jen-Shan Hsieh, Jonathan H. Jiang, Qiong Su, Lijun Zhao, Michael Lavallee, and Renyi Zhang
Atmos. Chem. Phys., 23, 13835–13852, https://doi.org/10.5194/acp-23-13835-2023, https://doi.org/10.5194/acp-23-13835-2023, 2023
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Tropical cyclones (TCs) can cause catastrophic damage to coastal regions. We used a numerical model that explicitly simulates aerosol–cloud interaction and atmosphere–ocean coupling. We show that aerosols and ocean coupling work together to make TC storms bigger but weaker. Moreover, TCs in polluted air have more rainfall and higher sea levels, leading to more severe storm surges and flooding. Our research highlights the roles of aerosols and ocean-coupling feedbacks in TC hazard assessment.
Adam C. Varble, Adele L. Igel, Hugh Morrison, Wojciech W. Grabowski, and Zachary J. Lebo
Atmos. Chem. Phys., 23, 13791–13808, https://doi.org/10.5194/acp-23-13791-2023, https://doi.org/10.5194/acp-23-13791-2023, 2023
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As atmospheric particles called aerosols increase in number, the number of droplets in clouds tends to increase, which has been theorized to increase storm intensity. We critically evaluate the evidence for this theory, showing that flaws and limitations of previous studies coupled with unaddressed cloud process complexities draw it into question. We provide recommendations for future observations and modeling to overcome current uncertainties.
Jing Yang, Shiye Huang, Qilin Zhang, Xiaoqin Jing, Yuting Deng, and Yubao Liu
EGUsphere, https://doi.org/10.5194/egusphere-2023-2188, https://doi.org/10.5194/egusphere-2023-2188, 2023
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This study contributes to fill the dearth of understanding the impacts of different secondary ice production (SIP) processes on the cloud electrification in cold-season thunderstorm. The results suggest the SIP, especially the rime-splintering process and the shattering of freezing drops, have significant impacts on the charge structure of the storm. In addition, the modelled radar composite reflectivity and flash rate are improved after implementing the three SIP processes in the model.
Yanfeng He and Kengo Sudo
Atmos. Chem. Phys., 23, 13061–13085, https://doi.org/10.5194/acp-23-13061-2023, https://doi.org/10.5194/acp-23-13061-2023, 2023
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Lightning has big social impacts. Lightning-produced NOx (LNOx) plays a vital role in atmospheric chemistry and climate. Investigating past lightning and LNOx trends can provide essential indicators of all lightning-related phenomena. Simulations show almost flat global lightning and LNOx trends during 1960–2014. Past global warming enhances the trends positively, but increases in aerosol have the opposite effect. Moreover, global lightning decreased markedly after the Pinatubo eruption.
Hannah C. Frostenberg, André Welti, Mikael Luhr, Julien Savre, Erik S. Thomson, and Luisa Ickes
Atmos. Chem. Phys., 23, 10883–10900, https://doi.org/10.5194/acp-23-10883-2023, https://doi.org/10.5194/acp-23-10883-2023, 2023
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Observations show that ice-nucleating particle concentrations (INPCs) have a large variety and follow lognormal distributions for a given temperature. We introduce a new immersion freezing parameterization that applies this lognormal behavior. INPCs are drawn randomly from a temperature-dependent lognormal distribution. We then show that the ice content of the modeled Arctic stratocumulus cloud is highly sensitive to the probability of drawing large INPCs.
Kai-I Lin, Kao-Shen Chung, Sheng-Hsiang Wang, Li-Hsin Chen, Yu-Chieng Liou, Pay-Liam Lin, Wei-Yu Chang, Hsien-Jung Chiu, and Yi-Hui Chang
Atmos. Chem. Phys., 23, 10423–10438, https://doi.org/10.5194/acp-23-10423-2023, https://doi.org/10.5194/acp-23-10423-2023, 2023
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This study develops a hybrid microphysics scheme to enable the complex model simulation of cloud seeding based on observational cloud condensation nuclei size distribution. Our results show that more precipitation can be developed in the scenarios seeding in the in-cloud region, and seeding over an area of tens km2 is the most efficient strategy due to the strengthening of the accretion process. Moreover, particles bigger than 0.4 μm are the main factor contributing to cloud-seeding effects.
Liu Yang, Saisai Ding, Jing-Wu Liu, and Su-Ping Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2023-1494, https://doi.org/10.5194/egusphere-2023-1494, 2023
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Advection fog occurs when warm and moist air moves over a cold sea surface. In this situation, the temperature of the foggy air usually drops below the sea surface temperature (SST), particularly at night. High-resolution simulations show that the cooling effect of longwave radiation from the top of the fog layer permeates through the fog, resulting in a cooling of the surface air below SST. This study emphasizes the significance of monitoring air temperature to enhance sea fog forecasting.
Naifu Shao, Chunsong Lu, Xingcan Jia, Yuan Wang, Yubin Li, Yan Yin, Bin Zhu, Tianliang Zhao, Duanyang Liu, Shengjie Niu, Shuxian Fan, Shuqi Yan, and Jingjing Lv
Atmos. Chem. Phys., 23, 9873–9890, https://doi.org/10.5194/acp-23-9873-2023, https://doi.org/10.5194/acp-23-9873-2023, 2023
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Fog is an important meteorological phenomenon that affects visibility. Aerosols and the planetary boundary layer (PBL) play critical roles in the fog life cycle. In this study, aerosol-induced changes in fog properties become more remarkable in the second fog (Fog2) than in the first fog (Fog1). The reason is that aerosol–cloud interaction (ACI) delays Fog1 dissipation, leading to the PBL meteorological conditions being more conducive to Fog2 formation and to stronger ACI in Fog2.
Rachel L. James, Jonathan Crosier, and Paul J. Connolly
Atmos. Chem. Phys., 23, 9099–9121, https://doi.org/10.5194/acp-23-9099-2023, https://doi.org/10.5194/acp-23-9099-2023, 2023
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Secondary ice production (SIP) may significantly enhance the ice particle concentration in mixed-phase clouds. We present a systematic modelling study of secondary ice formation in idealised shallow convective clouds for various conditions. Our results suggest that the SIP mechanism of collisions of supercooled water drops with more massive ice particles may be a significant ice formation mechanism in shallow convective clouds outside the rime-splintering temperature range (−3 to −8 °C).
Melanie Lauer, Annette Rinke, Irina Gorodetskaya, Michael Sprenger, Mario Mech, and Susanne Crewell
Atmos. Chem. Phys., 23, 8705–8726, https://doi.org/10.5194/acp-23-8705-2023, https://doi.org/10.5194/acp-23-8705-2023, 2023
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We present a new method to analyse the influence of atmospheric rivers (ARs), cyclones, and fronts on the precipitation in the Arctic, based on two campaigns: ACLOUD (early summer 2017) and AFLUX (early spring 2019). There are differences between both campaign periods: in early summer, the precipitation is mostly related to ARs and fronts, especially when they are co-located, while in early spring, cyclones isolated from ARs and fronts contributed most to the precipitation.
Yuan Wang, Xiaojian Zheng, Xiquan Dong, Baike Xi, and Yuk L. Yung
Atmos. Chem. Phys., 23, 8591–8605, https://doi.org/10.5194/acp-23-8591-2023, https://doi.org/10.5194/acp-23-8591-2023, 2023
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Marine boundary layer clouds remain poorly predicted in global climate models due to multiple entangled uncertainty sources. This study uses the in situ observations from a recent field campaign to constrain and evaluate cloud physics in a simplified version of a climate model. Progress and remaining issues in the cloud physics parameterizations are identified. We systematically evaluate the impacts of large-scale forcing, microphysical scheme, and aerosol concentrations on the cloud property.
Annika Oertel, Annette K. Miltenberger, Christian M. Grams, and Corinna Hoose
Atmos. Chem. Phys., 23, 8553–8581, https://doi.org/10.5194/acp-23-8553-2023, https://doi.org/10.5194/acp-23-8553-2023, 2023
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Warm conveyor belts (WCBs) are cloud- and precipitation-producing airstreams in extratropical cyclones that are important for the large-scale flow and cloud radiative forcing. We analyze cloud formation processes during WCB ascent in a two-moment microphysics scheme. Quantification of individual diabatic heating rates shows the importance of condensation, vapor deposition, rain evaporation, melting, and cloud-top radiative cooling for total heating and WCB-related potential vorticity structure.
Colin Tully, David Neubauer, Diego Villanueva, and Ulrike Lohmann
Atmos. Chem. Phys., 23, 7673–7698, https://doi.org/10.5194/acp-23-7673-2023, https://doi.org/10.5194/acp-23-7673-2023, 2023
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This study details the first attempt with a GCM to simulate a fully prognostic aerosol species specifically for cirrus climate intervention. The new approach is in line with the real-world delivery mechanism via aircraft. However, to achieve an appreciable signal from seeding, smaller particles were needed, and their mass emissions needed to be scaled by at least a factor of 100. These biases contributed to either overseeding or small and insignificant effects in response to seeding cirrus.
Ines Bulatovic, Julien Savre, Michael Tjernström, Caroline Leck, and Annica M. L. Ekman
Atmos. Chem. Phys., 23, 7033–7055, https://doi.org/10.5194/acp-23-7033-2023, https://doi.org/10.5194/acp-23-7033-2023, 2023
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We use numerical modeling with detailed cloud microphysics to investigate a low-altitude cloud system consisting of two cloud layers – a type of cloud situation which was commonly observed during the summer of 2018 in the central Arctic (north of 80° N). The model generally reproduces the observed cloud layers and the thermodynamic structure of the lower atmosphere well. The cloud system is maintained unless there are low aerosol number concentrations or high large-scale wind speeds.
Huan Liu, Ilan Koren, Orit Altaratz, and Mickaël D. Chekroun
Atmos. Chem. Phys., 23, 6559–6569, https://doi.org/10.5194/acp-23-6559-2023, https://doi.org/10.5194/acp-23-6559-2023, 2023
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Clouds' responses to global warming contribute the largest uncertainty in climate prediction. Here, we analyze 42 years of global cloud cover in reanalysis data and show a decreasing trend over most continents and an increasing trend over the tropical and subtropical oceans. A reduction in near-surface relative humidity can explain the decreasing trend in cloud cover over land. Our results suggest potential stress on the terrestrial water cycle, associated with global warming.
Axel Seifert, Vanessa Bachmann, Florian Filipitsch, Jochen Förstner, Christian M. Grams, Gholam Ali Hoshyaripour, Julian Quinting, Anika Rohde, Heike Vogel, Annette Wagner, and Bernhard Vogel
Atmos. Chem. Phys., 23, 6409–6430, https://doi.org/10.5194/acp-23-6409-2023, https://doi.org/10.5194/acp-23-6409-2023, 2023
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We investigate how mineral dust can lead to the formation of cirrus clouds. Dusty cirrus clouds lead to a reduction in solar radiation at the surface and, hence, a reduced photovoltaic power generation. Current weather prediction systems are not able to predict this interaction between mineral dust and cirrus clouds. We have developed a new physical description of the formation of dusty cirrus clouds. Overall we can show a considerable improvement in the forecast quality of clouds and radiation.
Gabrielle R. Leung, Stephen M. Saleeby, G. Alexander Sokolowsky, Sean W. Freeman, and Susan C. van den Heever
Atmos. Chem. Phys., 23, 5263–5278, https://doi.org/10.5194/acp-23-5263-2023, https://doi.org/10.5194/acp-23-5263-2023, 2023
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This study uses a suite of high-resolution simulations to explore how the concentration and type of aerosol particles impact shallow tropical clouds and the overall aerosol budget. Under more-polluted conditions, there are more aerosol particles present, but we also find that clouds are less able to remove those aerosol particles via rainout. Instead, those aerosol particles are more likely to be detrained aloft and remain in the atmosphere for further aerosol–cloud interactions.
Sisi Chen, Lulin Xue, Sarah Tessendorf, Kyoko Ikeda, Courtney Weeks, Roy Rasmussen, Melvin Kunkel, Derek Blestrud, Shaun Parkinson, Melinda Meadows, and Nick Dawson
Atmos. Chem. Phys., 23, 5217–5231, https://doi.org/10.5194/acp-23-5217-2023, https://doi.org/10.5194/acp-23-5217-2023, 2023
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The possible mechanism of effective ice growth in the cloud-top generating cells in winter orographic clouds is explored using a newly developed ultra-high-resolution cloud microphysics model. Simulations demonstrate that a high availability of moisture and liquid water is critical for producing large ice particles. Fluctuations in temperature and moisture down to millimeter scales due to cloud turbulence can substantially affect the growth history of the individual cloud particles.
Jan Chylik, Dmitry Chechin, Regis Dupuy, Birte S. Kulla, Christof Lüpkes, Stephan Mertes, Mario Mech, and Roel A. J. Neggers
Atmos. Chem. Phys., 23, 4903–4929, https://doi.org/10.5194/acp-23-4903-2023, https://doi.org/10.5194/acp-23-4903-2023, 2023
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Arctic low-level clouds play an important role in the ongoing warming of the Arctic. Unfortunately, these clouds are not properly represented in weather forecast and climate models. This study tries to cover this gap by focusing on clouds over open water during the spring, observed by research aircraft near Svalbard. The study combines the high-resolution model with sets of observational data. The results show the importance of processes that involve both ice and the liquid water in the clouds.
Gillian Young McCusker, Jutta Vüllers, Peggy Achtert, Paul Field, Jonathan J. Day, Richard Forbes, Ruth Price, Ewan O'Connor, Michael Tjernström, John Prytherch, Ryan Neely III, and Ian M. Brooks
Atmos. Chem. Phys., 23, 4819–4847, https://doi.org/10.5194/acp-23-4819-2023, https://doi.org/10.5194/acp-23-4819-2023, 2023
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In this study, we show that recent versions of two atmospheric models – the Unified Model and Integrated Forecasting System – overestimate Arctic cloud fraction within the lower troposphere by comparison with recent remote-sensing measurements made during the Arctic Ocean 2018 expedition. The overabundance of cloud is interlinked with the modelled thermodynamic structure, with strong negative temperature biases coincident with these overestimated cloud layers.
Matthew W. Christensen, Po-Lun Ma, Peng Wu, Adam C. Varble, Johannes Mülmenstädt, and Jerome D. Fast
Atmos. Chem. Phys., 23, 2789–2812, https://doi.org/10.5194/acp-23-2789-2023, https://doi.org/10.5194/acp-23-2789-2023, 2023
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An increase in aerosol concentration (tiny airborne particles) is shown to suppress rainfall and increase the abundance of droplets in clouds passing over Graciosa Island in the Azores. Cloud drops remain affected by aerosol for several days across thousands of kilometers in satellite data. Simulations from an Earth system model show good agreement, but differences in the amount of cloud water and its extent remain despite modifications to model parameters that control the warm-rain process.
Liine Heikkinen, Daniel G. Partridge, Wei Huang, Sara Blichner, Rahul Ranjan, Emanuele Tovazzi, Tuukka Petäjä, Claudia Mohr, and Ilona Riipinen
EGUsphere, https://doi.org/10.5194/egusphere-2023-164, https://doi.org/10.5194/egusphere-2023-164, 2023
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The organic vapor condensation with water vapor (co-condensation) is modeled in this work over the boreal forest environment because the forest air is rich in naturally emitted organic vapors. The simulations show that the number of cloud droplets can enhance by 20 % if the co-condensation process is considered. The enhancements are particularly high if the air contains small, naturally produced particles. Such conditions are most frequently met in Spring in the boreal forest.
Peter Spichtinger, Patrik Marschalik, and Manuel Baumgartner
Atmos. Chem. Phys., 23, 2035–2060, https://doi.org/10.5194/acp-23-2035-2023, https://doi.org/10.5194/acp-23-2035-2023, 2023
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We investigate the impact of the homogeneous nucleation rate on nucleation events in cirrus. As long as the slope of the rate is represented sufficiently well, the resulting ice crystal number concentrations are not crucially affected. Even a change in the prefactor over orders of magnitude does not change the results. However, the maximum supersaturation during nucleation events shows strong changes. This quantity should be used for diagnostics instead of the popular nucleation threshold.
Julia Thomas, Andrew Barrett, and Corinna Hoose
Atmos. Chem. Phys., 23, 1987–2002, https://doi.org/10.5194/acp-23-1987-2023, https://doi.org/10.5194/acp-23-1987-2023, 2023
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We study the sensitivity of rain formation processes during a heavy-rainfall event over mountains to changes in temperature and pollution. Total rainfall increases by 2 % K−1, and a 6 % K−1 increase is found at the highest altitudes, caused by a mixed-phase seeder–feeder mechanism (frozen cloud particles melt and grow further as they fall through a liquid cloud layer). In a cleaner atmosphere this process is enhanced. Thus the risk of severe rainfall in mountains may increase in the future.
Pramod Adhikari and John F. Mejia
Atmos. Chem. Phys., 23, 1019–1042, https://doi.org/10.5194/acp-23-1019-2023, https://doi.org/10.5194/acp-23-1019-2023, 2023
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We used an atmospheric model to assess the impact of aerosols through radiation and cloud interaction on elevation-dependent precipitation and surface temperature over the central Himalayan region. Results showed contrasting altitudinal precipitation responses to the increased aerosol concentration, which can significantly impact the hydroclimate of the central Himalayas, increasing the risk for extreme events and influencing the regional supply of water resources.
Peter Kuma, Frida A.-M. Bender, Alex Schuddeboom, Adrian J. McDonald, and Øyvind Seland
Atmos. Chem. Phys., 23, 523–549, https://doi.org/10.5194/acp-23-523-2023, https://doi.org/10.5194/acp-23-523-2023, 2023
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We present a machine learning method for determining cloud types in climate model output and satellite observations based on ground observations of cloud genera. We analyse cloud type biases and changes with temperature in climate models and show that the bias is anticorrelated with climate sensitivity. Models simulating decreasing stratiform and increasing cumuliform clouds with increased CO2 concentration tend to have higher climate sensitivity than models simulating the opposite tendencies.
Kevin Wolf, Nicolas Bellouin, and Olivier Boucher
Atmos. Chem. Phys., 23, 287–309, https://doi.org/10.5194/acp-23-287-2023, https://doi.org/10.5194/acp-23-287-2023, 2023
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Recent studies estimate the radiative impact of contrails to be similar to or larger than that of emitted CO2; thus, contrail mitigation might be an opportunity to reduce the climate effects of aviation. A radiosonde data set is analyzed in terms of the vertical distribution of potential contrails, contrail mitigation by flight altitude changes, and linkages with the tropopause and jet stream. The effect of prospective jet engine developments and alternative fuels are estimated.
Guy Dagan
Atmos. Chem. Phys., 22, 15767–15775, https://doi.org/10.5194/acp-22-15767-2022, https://doi.org/10.5194/acp-22-15767-2022, 2022
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Using idealized simulations we demonstrate that the equilibrium climate sensitivity (ECS), i.e. the increase in surface temperature under equilibrium conditions due to doubling of the CO2 concentration, increases with the aerosol concentration. The ECS increase is explained by a faster increase in precipitation efficiency with warming under high aerosol concentrations, which more efficiently depletes the water from the cloud and thus is manifested as an increase in the cloud feedback parameter.
Sonya L. Fiddes, Alain Protat, Marc D. Mallet, Simon P. Alexander, and Matthew T. Woodhouse
Atmos. Chem. Phys., 22, 14603–14630, https://doi.org/10.5194/acp-22-14603-2022, https://doi.org/10.5194/acp-22-14603-2022, 2022
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Climate models have difficulty simulating Southern Ocean clouds, impacting how much sunlight reaches the surface. We use machine learning to group different cloud types observed from satellites and simulated in a climate model. We find the model does a poor job of simulating the same cloud type as what the satellite shows and, even when it does, the cloud properties and amount of reflected sunlight are incorrect. We have a lot of work to do to model clouds correctly over the Southern Ocean.
Prabhakar Shrestha, Jana Mendrok, and Dominik Brunner
Atmos. Chem. Phys., 22, 14095–14117, https://doi.org/10.5194/acp-22-14095-2022, https://doi.org/10.5194/acp-22-14095-2022, 2022
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The study extends the Terrestrial Systems Modeling Platform with gas-phase chemistry aerosol dynamics and a radar forward operator to enable detailed studies of aerosol–cloud–precipitation interactions. This is demonstrated using a case study of a deep convective storm, which showed that the strong updraft in the convective core of the storm produced aerosol-tower-like features, which affected the size of the hydrometeors and the simulated polarimetric features (e.g., ZDR and KDP columns).
Jia He, Helene Brogniez, and Laurence Picon
Atmos. Chem. Phys., 22, 12591–12606, https://doi.org/10.5194/acp-22-12591-2022, https://doi.org/10.5194/acp-22-12591-2022, 2022
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A 2003–2017 satellite-based atmospheric water vapour climate data record is used to assess climate models and reanalyses. The focus is on the tropical belt, whose regional variations in the hydrological cycle are related to the tropospheric overturning circulation. While there are similarities in the interannual variability, the major discrepancies can be explained by the presence of clouds, the representation of moisture fluxes at the surface and cloud processes in the models.
Silvia M. Calderón, Juha Tonttila, Angela Buchholz, Jorma Joutsensaari, Mika Komppula, Ari Leskinen, Liqing Hao, Dmitri Moisseev, Iida Pullinen, Petri Tiitta, Jian Xu, Annele Virtanen, Harri Kokkola, and Sami Romakkaniemi
Atmos. Chem. Phys., 22, 12417–12441, https://doi.org/10.5194/acp-22-12417-2022, https://doi.org/10.5194/acp-22-12417-2022, 2022
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The spatial and temporal restrictions of observations and oversimplified aerosol representation in large eddy simulations (LES) limit our understanding of aerosol–stratocumulus interactions. In this closure study of in situ and remote sensing observations and outputs from UCLALES–SALSA, we have assessed the role of convective overturning and aerosol effects in two cloud events observed at the Puijo SMEAR IV station, Finland, a diurnal-high aerosol case and a nocturnal-low aerosol case.
Zhipeng Qu, Alexei Korolev, Jason A. Milbrandt, Ivan Heckman, Yongjie Huang, Greg M. McFarquhar, Hugh Morrison, Mengistu Wolde, and Cuong Nguyen
Atmos. Chem. Phys., 22, 12287–12310, https://doi.org/10.5194/acp-22-12287-2022, https://doi.org/10.5194/acp-22-12287-2022, 2022
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Secondary ice production (SIP) is an important physical phenomenon that results in an increase in the cloud ice particle concentration and can have a significant impact on the evolution of clouds. Here, idealized simulations of a tropical convective system were conducted. Agreement between the simulations and observations highlights the impacts of SIP on the maintenance of tropical convection in nature and the importance of including the modelling of SIP in numerical weather prediction models.
Michael S. Diamond, Pablo E. Saide, Paquita Zuidema, Andrew S. Ackerman, Sarah J. Doherty, Ann M. Fridlind, Hamish Gordon, Calvin Howes, Jan Kazil, Takanobu Yamaguchi, Jianhao Zhang, Graham Feingold, and Robert Wood
Atmos. Chem. Phys., 22, 12113–12151, https://doi.org/10.5194/acp-22-12113-2022, https://doi.org/10.5194/acp-22-12113-2022, 2022
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Smoke from southern Africa blankets the southeast Atlantic from June-October, overlying a major transition region between overcast and scattered clouds. The smoke affects Earth's radiation budget by absorbing sunlight and changing cloud properties. We investigate these effects in regional climate and large eddy simulation models based on international field campaigns. We find that large-scale circulation changes more strongly affect cloud transitions than smoke microphysical effects in our case.
Cited articles
Akaeda, K., Reisner, J., and Parsons, D.: The role of mesoscale and
topographically induced circulations initiating a flash flood observed
during the TAMEX project, Mon. Weather Rev., 123, 1720–1739, 1995.
Ancell, B. and Hakim, G. J.: Comparing adjoint- and ensemble-sensitivity
analysis with applications to observation targeting, Mon. Weather Rev., 135,
4117–4134, 2007.
Banta, R. M.: The Role of Mountain Flows in Making Clouds, in: Atmospheric
Processes over Complex Terrain, edited by: Blumen, W., Meteorological
Monographs, 23, Boston, Massachusetts, US, Am. Meteorol. Soc., 229–284,
https://doi.org/10.1007/978-1-935704-25-6_9, 1990.
Bednarczyk, C. N. and Ancell, B. C.: Ensemble sensitivity analysis applied
to a southern plains convective event, Mon. Weather Rev., 143, 230–249,
2015.
Chen, G. T.-J.: Mesoscale features observed in Taiwan Mei-Yu season, J.
Meteor. Soc. Jpn., 70, 497–516, 1992.
Chen, G. T.-J.: Research on the phenomena of Meiyu during the past quarter
century: an overview, in: World Scientific Series on Meteorology of East Asia, Vol. 2, East Asian Monsoon, edited by: Chang, C.-P., World
Scientific, Singapore, 357–403, ISBN: 981-238-769-2, https://doi.org/10.1142/9789812701411_0010, 2004.
Chen, G. T.-J. and Chi, S.-S.: On the frequency and speed of mei-yu front
over southern China and the adjacent areas, Pap. Meteor. Res., 3, 31–42,
1980.
Chen, G. T.-J. and Chou, H.-C.: General characteristics of squall lines
observed in TAMEX, Mon. Weather Rev., 121, 726–733, 1993.
Chen, G. T.-J. and Yu, C.-C.: Study of low-level jet and extremely heavy
rainfall over northern Taiwan in the mei-yu season, Mon. Weather Rev., 116,
884–891, 1988.
Chen, G.T.-J., Wang, C.-C., and Lin, D. T.-W.: Characteristics of low-level
jets over northern Taiwan in mei-yu season and their relationship to heavy
rain events, Mon. Weather Rev. 133, 20–43, 2005.
Chen, G. T.-J., Wang, C.-C., and Chang, S.-W.: A diagnostic case study of
meiyu frontogenesis and development of wavelike frontal disturbances in the
subtropical environment, Mon. Weather Rev., 136, 41–61, 2008.
Chen, S.-J., Kuo, Y.-H., Wang, W., Tao, Z.-Y., and Cui, B.: A modeling case
study of heavy rainstorms along the mei-yu front, Mon. Weather Rev., 126,
2330–2351, 1998.
Chen, T.-C., Yen, M.-C., Hsieh, J.-C., and Arritt, R. W.: Diurnal and
seasonal variations of the rainfall measured by the automatic rainfall and
meteorological telemetry system in Taiwan, B. Am. Meteorol. Soc., 80,
2299–2312, 1999.
Chen, X.-A. and Chen, Y.-L.: Development of low-level jets during TAMEX,
Mon. Weather Rev., 123, 1695–1719, 1995.
Chen, Y.-L., Chen, X. A., and Zhang, Y.-X.: A diagnostic study of the
low-level jet during TAMEX IOP 5, Mon. Weather Rev., 122, 2257–2284, 1994.
Chen, Y.-L., Chu, Y.-J., Chen, C.-S., Tu, C.-C., Teng, J.-H., and Lin,
P.-L.: Analysis and simulations of a heavy rainfall event over northern
Taiwan during 11–12 June 2012, Mon. Weather Rev., 146, 2697–2715, 2018.
Chi, S.-S.: The Mei-Yu in Taiwan, SFRDEST E-06-MT-03-4, Chung-Shin
Engineering Technology Research and Development Foundation, Taipei, Taiwan,
65 pp., ISBN: 986-7142-22-5, 2006.
Chien, F.-C. and Jou, B. J.-D.: MM5 ensemble mean precipitation in the
Taiwan area for three early summer convective (Mei-Yu) seasons, Weather
Forecast., 19, 735–750, 2004.
Chung, K.-S., Chiu, H.-J., Liu, C.-Y., and Lin, M.-Y.: Satellite observation
for evaluating cloud properties of the microphysical schemes in Weather
Research and Forecasting simulation: A case study of the Mei-yu front
precipitation system, Remote Sens., 12, 3060, https://doi.org/10.3390/rs12183060, 2020.
Cotton, W. R., Tripoli, G. J., Rauber, R. M., and Mulvihill, E. A.:
Numerical simulation of the effects of varying ice crystal nucleation rates
and aggregation processes on orographic snowfall, J. Appl. Meteorol. Climatol.,
25, 1658–1680, 1986.
Ding, Y. and Chan, J. C.-L.: The East Asian summer monsoon: an overview,
Meteor. Atmos. Phys., 89, 117–142, 2005.
Ding, Y.-H.: Summer monsoon rainfalls in China, J. Meteorol. Soc. Jpn., 70,
337–396, 1992.
Deardorff, J. W.: Stratocumulus-capped mixed layers derived from a
three-dimensional model, Bound.-Lay. Meteorol., 18, 495–527, 1980.
Gourley, J. J., Zhang, J., Maddox, R. A., Calvert, C. M., and Howard, K. W.:
A real-time precipitation monitoring algorithm – Quantitative Precipitation
Estimation Using Multiple Sensors (QPE-SUMS), in: Preprints, Symposium on
Precipitation Extremes: Prediction, Impacts, and Responses, Albuquerque, NM,
Am. Meteorol. Soc., 57–60, 2001.
Houze Jr., R. A., Rutledge, S. A., Biggerstaff, M. I., and Smull, B. F.:
Interpretation of Doppler radar displays of mid-latitude mesoscale
convective systems, B. Am. Meteorol. Soc., 70, 608–619, 1989.
Hsu, J.: ARMTS up and running in Taiwan, Väisälä News, Väisälä, 146,
24–26, 1998.
Ikawa, M. and Saito, K.: Description of a nonhydrostatic model developed at
the Forecast Research Department of the MRI, MRI Tech., Rep. 28, Meteorological Research Institute, Tsukuba, Japan, 238 pp., https://doi.org/10.11483/mritechrepo.28, 1991.
Huang, W.-R. Liu, P.-Y., Chen, J.-H., and Deng, L.: Impact of Boreal Summer
Intra-Seasonal Oscillations on the heavy rainfall events in Taiwan during
the 2017 Meiyu season, Atmosphere, 10, 205, 18 pp., https://doi.org/10.3390/atmos10040205, 2019.
Johnson, R. H.: Diurnal cycle of monsoon convection, in: The Global Monsoon
System: Research and Forecast, 2nd Edition, edited by: Chang, C.-P., Ding,
Y., Lau, N.-C., Johnson, R. H., Wang, B., and Yasunari, T., World Scientific,
Toh Tuck Link, Singapore, 257–276,
https://doi.org/10.1142/9789814343411_0015, 2011.
Jou, B. J.-D. and Deng, S.-M.: Structure of a low-level jet and its role in
triggering and organizing moist convection over Taiwan: a TAMEX case study,
Terr. Atmos. Ocean. Sci., 3, 39–58, 1992.
Kalnay, E., Kanamitsu, M., and Baker, W. E.: Global numerical weather
prediction at the National Meteorological Center, B. Am. Meteorol. Soc., 71,
1410–1428, 1990.
Ke, C.-Y., Chung, K.-S., Chen Wang, T.-C., and Liou, Y.-C.: Analysis of
heavy rainfall and barrier-jet evolution during Mei-Yu season using multiple
Doppler radar retrievals: a case study on 11 June 2012, Tellus A, 71,
1571369, https://doi.org/10.1080/16000870.2019.1571369, 2019.
Kerns, B. W. J., Chen, Y.-L., and Chang, M.-Y.: The diurnal cycle of winds,
rain, and clouds over Taiwan during the mei-yu, summer, and autumn rainfall
regimes, Mon. Weather Rev., 138, 497–516,
https://doi.org/10.1175/2009MWR3031.1, 2010.
Kleist, D. T., Parrish, D. F., Derber, J. C., Treadon, R., Wu, W. S., and
Lord, S.: Introduction of the GSI into the NCEP global data assimilation
system, Weather Forecast., 24, 1691–1705, 2009.
Kondo, J.: Heat balance of the East China Sea during the air mass transformation
experiment, J. Meteorol. Soc. Jpn., 54, 382–398, 1976.
Kuo, Y.-H. and Chen, G. T.-J.: The Taiwan Area Mesoscale Experiment (TAMEX):
an overview, B. Am. Meteorol. Soc., 71, 488–503, 1990.
Lau, K.-M., Yang, G. J., and Shen, S. H.: Seasonal and intraseasonal
climatology of summer monsoon rainfall over East Asia, Mon. Weather Rev.,
116, 18–37, 1988.
Li, J. and Chen, Y.-L.: Barrier jets during TAMEX, Mon. Weather Rev., 126,
959–971, 1998.
Lin, Y.-J., Wang, T.-C. C., Pasken, R. W., Shen, H., and Deng, Z.-S.:
Characteristics of a subtropical squall line determined from TAMEX
dual-Doppler data, Part II: Dynamic and thermodynamic structures and
momentum budgets, J. Atmos. Sci., 47, 2382–2399, 1990.
Lin, Y.-L.: Orographic effects on airflow and mesoscale weather systems over
Taiwan, Terr. Atmos. Ocean. Sci., 4, 381–420. 1993.
Lin, Y.-L., Farley, R. D., and Orville, H. D.: Bulk parameterization of the
snow field in a cloud model, J. Appl. Meteorol. Climatol., 22, 1065–1092, 1983.
Lin, Y.-L., Chiao, S., Wang, T.-A., and Kaplan, M. L.: Some common
ingredients for heavy orographic rainfall, Weather Forecast., 16, 633–660,
2001.
Louis, J. F., Tiedtke, M., and Geleyn, J. F.: A short history of the
operational PBL – parameterization at ECMWF, in: Proceedings, ECMWF Workshop
on Planetary Boundary Layer Parameterization, 25–27 November 1981, ECMWF, Reading,
UK, 59–79, https://www.ecmwf.int/en/elibrary/75473-short-history-pbl-parameterization-ecmwf (last access: 21 April 2021), 1982.
Lupo, K. M., Torn, R. D., and Yang, S.-C.: Evaluation of stochastic
perturbed parameterization tendencies on convective-permitting ensemble
forecasts of heavy rainfall events in New York and Taiwan, Weather
Forecast., 35, 5–24, 2020.
Metzger, E. J., Wallcraft, A. J., Posey, P. G., Smedstad, O. E., and
Franklin, D. S.: The switchover from NOGAPS to NAVGEM 1.1 Atmospheric
Forcing in GOFS and ACNFS, NRL/MR/7320–13-9486, Naval Research Laboratory, Oceanography Division, Stennis Space Center, MS, USA, 13 pp., https://www.hycom.org/attachments/377_NRL MR-9486.pdf (last access: 1 April 2021), 2013.
Moorthi, S., Pan, H. L., and Caplan, P.: Changes to the 2001 NCEP
operational MRF/AVN global analysis/forecast system, Tech. Procedures Bull.
484, Office of Meteorology, National Weather Service, Silver Spring, MD, USA, 14 pp., https://rda.ucar.edu/datasets/ds093.0/docs/484.pdf (last access: 20 June 2020), 2001.
Murakami, M.: Numerical modeling of dynamical and microphysical evolution of
an isolated convective cloud – The 19 July 1981 CCOPE cloud, J. Meteorol.
Soc. Jpn., 68, 107–128, 1990.
Murakami, M., Clark, T. L., and Hall, W. D.: Numerical simulations of
convective snow clouds over the Sea of Japan: two-dimensional simulations of
mixed layer development and convective snow cloud formation, J. Meteorol.
Soc. Jpn., 72, 43–62, 1994.
Nagata, M. and Ogura, Y.: A modeling case study of interaction between heavy
precipitation and a low-level jet over Japan in the baiu season, Mon.
Weather Rev., 119, 1309–1336, 1991.
Pierrehumbert, R. T. and Wyman, B.: Upstream effects of mesoscale mountains,
J. Atmos. Sci., 42, 977–1003, 1985.
Rotunno, R., Klemp, J. B., and Weisman, M. L.: A theory for strong,
long-lived squall lines, J. Atmos. Sci., 45, 463–485, 1988.
Ruppert, J. H., Jr., Johnson, R. H., and Rowe, A. K.: Diurnal circulations
and rainfall in Taiwan during SoWMEX/TiMREX (2008), Mon. Weather Rev., 141,
3851–3872, 2013.
Segami, A., Kurihara, K., Nakamura, H., Ueno, M., Takano, I., and Tatsumi,
Y.: Operational mesoscale weather prediction with Japan Spectral Model, J.
Meteorol. Soc. Jpn., 67, 907–924, 1989.
Torn, R. D. and Hakim, G. J.: Ensemble-based sensitivity analysis, Mon.
Weather Rev., 136, 663–677, 2008.
Tsuboki, K. and Sakakibara, A.: Large-scale parallel computing of cloud
resolving storm simulator, in: High Performance Computing, ISHPC 2002, Lecture Notes in Computer Science, Vol. 2327, edited by: Zima,
H. P., Joe, K., Sato, M., Seo, Y., and Shimasaki, M., Springer-Verlag,
Berlin and Heidelberg, Germany, 243–259, ISBN: 978-3-540-43674-4, https://doi.org/10.1007/3-540-47847-7_21, 2002.
Tsuboki, K. and Sakakibara, A.: Numerical Prediction of High-Impact Weather
Systems: The Textbook for the Seventeenth IHP Training Course in 2007,
Hydrospheric Atmospheric Research Center, Nagoya University, and UNESCO,
Nagoya, Japan, 273 pp., ISBN: 978-4-9980619-8-4, 2007.
Tu, C.-C., Chen, Y.-L., Lin, P.-L., and Huang, M.-Q.: Analysis and
simulations of a heavy rainfall event associated with the passage of a
shallow front over northern Taiwan on 2 June 2017, Mon. Weather Rev., 150,
505–528, 2022.
Wang, C.-C., Chen, G. T.-J., Chen, T.-C., and Tsuboki, K.: A numerical study
on the effects of Taiwan topography on a convective line during the mei-yu
season, Mon. Weather Rev., 133, 3217–3242, 2005.
Wang, C.-C., Chen, G. T.-J., and Huang, S.-Y.: Remote trigger of deep
convection by cold outflow over the Taiwan Strait in the mei-yu season: A
modeling study of the 8 June 2007 case, Mon. Weather Rev., 139, 2854–2875,
2011.
Wang, C.-C., Kuo, H.-C., Chen, Y.-H., Huang, H.-L., Chung, C.-H., and
Tsuboki, K.: Effects of asymmetric latent heating on typhoon movement
crossing Taiwan: The case of Morakot (2009) with extreme rainfall, J. Atmos.
Sci., 69, 3172–3196, 2012.
Wang, C.-C., Hsu, J. C.-S., Chen, G. T.-J., and Lee, D.-I.: A study of two
propagating heavy-rainfall episodes near Taiwan during SoWMEX/TiMREX IOP-8
in June 2008, Part I: Synoptic evolution, episode propagation, and model
control simulation, Mon. Weather Rev., 142, 2619–2643, 2014a.
Wang, C.-C., Hsu, J. C.-S., Chen, G. T.-J., and Lee, D.-I.: A study of two
propagating heavy-rainfall episodes near Taiwan during SoWMEX/TiMREX IOP-8
in June 2008, Part II: Sensitivity tests on the roles of synoptic conditions
and topographic effects, Mon. Weather Rev., 142, 2644–2664, 2014b.
Wang, C.-C., Chiou, B.-K., Chen, G. T.-J., Kuo, H.-C., and Liu, C.-H.: A
numerical study of back-building process in a quasistationary rainband with
extreme rainfall over northern Taiwan during 11–12 June 2012, Atmos. Chem.
Phys., 16, 12359–12382, doi.org/10.5194/acp-16-12359-2016, 2016.
Wang, C.-C., Paul, S., Chien, F.-C., Lee, D.-I., and Chuang, P.-Y.: An
evaluation of WRF rainfall forecasts in Taiwan during three mei-yu seasons
of 2008–2010, Weather Forecast., 32, 1329–1351,
https://doi.org/10.1175/WAF-D-16-0190.1, 2017.
Wang, C.-C., Li, M.-S., Chang, C.-S., Chuang, P.-Y., Chen, S.-H., and
Tsuboki, K.: Ensemble-based sensitivity analysis and predictability of an
extreme rainfall event over northern Taiwan in the Mei-yu season: The 2 June
2017 case, Atmos. Res., 259, 105684, https://doi.org/10.1016/j.atmosres.2021.105684, 2021.
Wang, C.-C., Chuang, P.-Y., Chang, C.-S., Tsuboki, K., Huang, S.-Y., and Leu, G.-C.: Evaluation of Mei-yu heavy-rainfall quantitative precipitation forecasts in Taiwan by a cloud-resolving model for three seasons of 2012–2014, Nat. Hazards Earth Syst. Sci., 22, 23–40, https://doi.org/10.5194/nhess-22-23-2022, 2022a.
Wang, C.-C., Chuang, P.-Y., Chen, S.-T., Lee, D.-I., and Tsuboki, K.:
Idealized simulations of Mei-yu rainfall in Taiwan under uniform
southwesterly flow using a cloud-resolving model, Nat. Hazards Earth Syst. Sci., 22, 1759–1817, https://doi.org/10.5194/nhess-22-1795-2022,
2022b.
Yeh, H.-C. and Chen, Y.-L.: Characteristics of the rainfall distribution
over Taiwan during TAMEX, J. Appl. Meteorol. Clim., 37, 1457–1469,
https://doi.org/10.1175/1520-0450(1998)037<1457:CORDOT>2.0.CO;2, 1998.
Yeh, H.-C. and Chen, Y.-L.: The role of offshore convergence on coastal
rainfall during TAMEX IOP 3, Mon. Weather Rev., 130, 2709–2730, 2002.
Yeh, H.-C. and Chen, Y.-L.: Numerical simulations of the barrier jet over
northwestern Taiwan during the Mei-Yu Season, Mon. Weather Rev., 131,
1396–1407, 2003.
Xu, W., Zipser, E. J., Chen, Y.-L., Liu, C., Liou, Y.-C., Lee, W.-C., and
Jou, B. J.-D.: An orography-associated extreme rainfall event during TiMREX:
initiation, storm evolution, and maintenance, Mon. Weather Rev., 140,
2555–2574, 2012.
Short summary
The extreme rainfall event (645 mm in 24 h) at the northern coast of Taiwan on 2 June 2017 is studied using a cloud model. Two 1 km experiments with peak amounts of 541 and 400 mm are compared to isolate the reasons for such a difference. It is found that the frontal rainband remains fixed in location for a longer period in the former run due to a low disturbance that acts to focus the near-surface convergence. Therefore, the rainfall is more concentrated and there is a higher total amount.
The extreme rainfall event (645 mm in 24 h) at the northern coast of Taiwan on 2 June 2017 is...
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