Articles | Volume 24, issue 11
https://doi.org/10.5194/acp-24-6809-2024
© Author(s) 2024. 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-24-6809-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Effects of radiative cooling on advection fog over the northwest Pacific Ocean: observations and large-eddy simulations
Liu Yang
Aviation Meteorology Department, Civil Aviation Flight University of China, Guanghan, China
Saisai Ding
Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES), Ocean University of China, Qingdao, China
Physical Oceanography Laboratory, Ocean University of China, Qingdao, China
Ocean–Atmosphere Interaction and Climate Laboratory, Ocean University of China, Qingdao, China
Jing-Wu Liu
CORRESPONDING AUTHOR
Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES), Ocean University of China, Qingdao, China
Physical Oceanography Laboratory, Ocean University of China, Qingdao, China
Ocean–Atmosphere Interaction and Climate Laboratory, Ocean University of China, Qingdao, China
Su-Ping Zhang
Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES), Ocean University of China, Qingdao, China
Physical Oceanography Laboratory, Ocean University of China, Qingdao, China
Ocean–Atmosphere Interaction and Climate Laboratory, Ocean University of China, Qingdao, China
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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
This study uses large-eddy simulations to examine how settling fog droplets affect marine advection fog over the northwestern Pacific. Cooling near the fog top promotes droplet growth, and larger droplets then fall downward, removing liquid water from the fog layer. This process limits fog water accumulation and helps regulate fog thickness and visibility. Aerosol concentration also affects fog evolution by changing droplet size and settling efficiency.
Kangwen Sun, Guangyao Dai, Songhua Wu, Oliver Reitebuch, Holger Baars, Jiqiao Liu, and Suping Zhang
Atmos. Chem. Phys., 24, 4389–4409, https://doi.org/10.5194/acp-24-4389-2024, https://doi.org/10.5194/acp-24-4389-2024, 2024
Short summary
Short summary
This paper investigates the correlation between marine aerosol optical properties and wind speeds over remote oceans using the spaceborne lidars ALADIN and CALIOP. Three remote ocean areas are selected. Pure marine aerosol optical properties at 355 nm are derived from ALADIN. The relationships between marine aerosol optical properties and wind speeds are analyzed within and above the marine atmospheric boundary layer, revealing the effect of wind speed on marine aerosols over remote oceans.
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Short summary
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.
Advection fog occurs when warm and moist air moves over a cold sea surface. In this situation,...
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