Articles | Volume 19, issue 23
https://doi.org/10.5194/acp-19-14621-2019
© Author(s) 2019. 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-19-14621-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Dec 2019
Research article |
| 03 Dec 2019
| 03 Dec 2019
Impact of convectively lofted ice on the seasonal cycle of water vapor in the tropical tropopause layer
Department of Atmospheric Sciences, Texas A&M University, College
Station, TX, USA
Department of Atmospheric Sciences, Texas A&M University, College
Station, TX, USA
Mark R. Schoeberl
Science and Technology Corporation, Columbia, MD, USA
Department of Atmospheric Sciences, Texas A&M University, College
Station, TX, USA
Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD
now at: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA
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We investigate the response of stratospheric water vapor (SWV) to different forcing agents, including greenhouse gases and aerosols. For most forcing agents, the SWV response is dominated by a slow response, which is coupled to surface temperature changes and exhibits a similar sensitivity to the surface temperature across all forcing agents. The fast SWV adjustment due to forcing is important when the forcing agent directly heats the cold-point region, e.g., black carbon.
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Subject: Gases | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Stratosphere | Science Focus: Physics (physical properties and processes)
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The monthly mean surface ozone concentrations peaked earlier in the south in April and May and later in the north in June and July over the Tibetan Plateau. The migration of monthly surface ozone peaks was coupled with the synchronous movement of tropopause folds and the westerly jet that created conditions conducive to stratospheric ozone intrusion. Stratospheric ozone intrusion significantly contributed to surface ozone across the Tibetan Plateau.
Sean M. Davis, Nicholas Davis, Robert W. Portmann, Eric Ray, and Karen Rosenlof
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Felix Ploeger and Hella Garny
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We investigate hemispheric asymmetries in stratospheric circulation changes in the last 2 decades in model simulations and atmospheric observations. We find that observed trace gas changes can be explained by a structural circulation change related to a deepening circulation in the Northern Hemisphere relative to the Southern Hemisphere. As this asymmetric signal is small compared to internal variability observed circulation trends over the recent past are not in contradiction to climate models.
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The stratosphere is emerging as one of the keys to improve tropospheric weather and climate predictions. This study provides evidence of the role the stratospheric ozone layer plays in improving weather predictions at different timescales. Using a new ozone modelling approach suitable for high-resolution global models that provide operational forecasts from days to seasons, we find significant improvements in stratospheric meteorological fields and stratosphere–troposphere coupling.
Johannes de Leeuw, Anja Schmidt, Claire S. Witham, Nicolas Theys, Isabelle A. Taylor, Roy G. Grainger, Richard J. Pope, Jim Haywood, Martin Osborne, and Nina I. Kristiansen
Atmos. Chem. Phys., 21, 10851–10879, https://doi.org/10.5194/acp-21-10851-2021, https://doi.org/10.5194/acp-21-10851-2021, 2021
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Using the NAME dispersion model in combination with high-resolution SO2 satellite data from TROPOMI, we investigate the dispersion of volcanic SO2 from the 2019 Raikoke eruption. NAME accurately simulates the dispersion of SO2 during the first 2–3 weeks after the eruption and illustrates the potential of using high-resolution satellite data to identify potential limitations in dispersion models, which will ultimately help to improve efforts to forecast the dispersion of volcanic clouds.
Felix Ploeger, Mohamadou Diallo, Edward Charlesworth, Paul Konopka, Bernard Legras, Johannes C. Laube, Jens-Uwe Grooß, Gebhard Günther, Andreas Engel, and Martin Riese
Atmos. Chem. Phys., 21, 8393–8412, https://doi.org/10.5194/acp-21-8393-2021, https://doi.org/10.5194/acp-21-8393-2021, 2021
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We investigate the global stratospheric circulation (Brewer–Dobson circulation) in the new ECMWF ERA5 reanalysis based on age of air simulations, and we compare it to results from the preceding ERA-Interim reanalysis. Our results show a slower stratospheric circulation and higher age for ERA5. The age of air trend in ERA5 over the 1989–2018 period is negative throughout the stratosphere, related to multi-annual variability and a potential contribution from changes in the reanalysis system.
Josefine Maas, Susann Tegtmeier, Yue Jia, Birgit Quack, Jonathan V. Durgadoo, and Arne Biastoch
Atmos. Chem. Phys., 21, 4103–4121, https://doi.org/10.5194/acp-21-4103-2021, https://doi.org/10.5194/acp-21-4103-2021, 2021
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Cooling-water disinfection at coastal power plants is a known source of atmospheric bromoform. A large source of anthropogenic bromoform is the industrial regions in East Asia. In current bottom-up flux estimates, these anthropogenic emissions are missing, underestimating the global air–sea flux of bromoform. With transport simulations, we show that by including anthropogenic bromoform from cooling-water treatment, the bottom-up flux estimates significantly improve in East and Southeast Asia.
Jacob W. Smith, Peter H. Haynes, Amanda C. Maycock, Neal Butchart, and Andrew C. Bushell
Atmos. Chem. Phys., 21, 2469–2489, https://doi.org/10.5194/acp-21-2469-2021, https://doi.org/10.5194/acp-21-2469-2021, 2021
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This paper informs realistic simulation of stratospheric water vapour by clearly attributing each of the two key influences on water vapour entry to the stratosphere. Presenting modified trajectory models, the results of this paper show temperatures dominate on annual and inter-annual variations; however, transport has a significant effect in reducing the annual cycle maximum. Furthermore, sub-seasonal variations in temperature have an important overall influence.
Wolfgang Woiwode, Andreas Dörnbrack, Inna Polichtchouk, Sören Johansson, Ben Harvey, Michael Höpfner, Jörn Ungermann, and Felix Friedl-Vallon
Atmos. Chem. Phys., 20, 15379–15387, https://doi.org/10.5194/acp-20-15379-2020, https://doi.org/10.5194/acp-20-15379-2020, 2020
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The lowermost-stratosphere moist bias in ECMWF analyses and 12 h forecasts is diagnosed for the Arctic winter-spring 2016 period by using two-dimensional GLORIA water vapor observations. The bias is already present in the initial conditions (i.e., the analyses), and sensitivity forecasts on time scales of < 12 h show hardly any sensitivity to modified spatial resolution and output frequency.
Xun Wang and Andrew E. Dessler
Atmos. Chem. Phys., 20, 13267–13282, https://doi.org/10.5194/acp-20-13267-2020, https://doi.org/10.5194/acp-20-13267-2020, 2020
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We investigate the response of stratospheric water vapor (SWV) to different forcing agents, including greenhouse gases and aerosols. For most forcing agents, the SWV response is dominated by a slow response, which is coupled to surface temperature changes and exhibits a similar sensitivity to the surface temperature across all forcing agents. The fast SWV adjustment due to forcing is important when the forcing agent directly heats the cold-point region, e.g., black carbon.
Wandi Yu, Andrew E. Dessler, Mijeong Park, and Eric J. Jensen
Atmos. Chem. Phys., 20, 12153–12161, https://doi.org/10.5194/acp-20-12153-2020, https://doi.org/10.5194/acp-20-12153-2020, 2020
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The stratospheric water vapor mixing ratio over North America (NA) region is up to ~ 1 ppmv higher when deep convection occurs. We find substantial consistency in the interannual variations of NA water vapor anomaly and deep convection and explain both the summer seasonal cycle and interannual variability of the convective moistening efficiency. We show that the NA anticyclone and tropical upper tropospheric temperature determine how much deep convection moistens the lower stratosphere.
Pallav Purohit, Lena Höglund-Isaksson, John Dulac, Nihar Shah, Max Wei, Peter Rafaj, and Wolfgang Schöpp
Atmos. Chem. Phys., 20, 11305–11327, https://doi.org/10.5194/acp-20-11305-2020, https://doi.org/10.5194/acp-20-11305-2020, 2020
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This study shows that if energy efficiency improvements in cooling technologies are addressed simultaneously with a phase-down of hydrofluorocarbons (HFCs), not only will global warming be mitigated through the elimination of HFCs but also by saving about a fifth of future global electricity consumption. This means preventing between 411 and 631 Pg CO2 equivalent of greenhouse gases between today and 2100, thereby offering a significant contribution towards staying well below 2 °C warming.
Ewa M. Bednarz, Amanda C. Maycock, Paul J. Telford, Peter Braesicke, N. Luke Abraham, and John A. Pyle
Atmos. Chem. Phys., 19, 5209–5233, https://doi.org/10.5194/acp-19-5209-2019, https://doi.org/10.5194/acp-19-5209-2019, 2019
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Following model improvements, the atmospheric response to the 11-year solar cycle forcing simulated in the UM-UKCA chemistry–climate model is discussed for the first time. In contrast to most previous studies in the literature, we compare the results diagnosed using both a composite and a MLR methodology, and we show that apparently different signals can be diagnosed in the troposphere. In addition, we look at the role of internal atmospheric variability for the detection of the solar response.
Suvarna Fadnavis, Chaitri Roy, Rajib Chattopadhyay, Christopher E. Sioris, Alexandru Rap, Rolf Müller, K. Ravi Kumar, and Raghavan Krishnan
Atmos. Chem. Phys., 18, 11493–11506, https://doi.org/10.5194/acp-18-11493-2018, https://doi.org/10.5194/acp-18-11493-2018, 2018
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Rapid industrialization, traffic growth and urbanization resulted in a significant increase in the tropospheric trace gases over Asia. There is global concern about rising levels of these trace gases. The monsoon convection transports these gases to the upper-level-anticyclone. In this study, we show transport of these gases to the extratropics via eddy-shedding from the anticyclone. We also deliberate on changes in ozone heating rates due to the transport of Asian trace gases.
Justin Bandoro, Susan Solomon, Benjamin D. Santer, Douglas E. Kinnison, and Michael J. Mills
Atmos. Chem. Phys., 18, 143–166, https://doi.org/10.5194/acp-18-143-2018, https://doi.org/10.5194/acp-18-143-2018, 2018
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We studied the attribution of stratospheric ozone changes and identified similarities between observations and human fingerprints from both emissions of ozone-depleting substances (ODSs) and greenhouse gases (GHGs). We developed an improvement on the traditional pattern correlation method that accounts for nonlinearities in the climate forcing time evolution. Use of the latter resulted in increased S / N ratios for the ODS fingerprint. The GHG fingerprint was not identifiable.
Anne R. Douglass, Susan E. Strahan, Luke D. Oman, and Richard S. Stolarski
Atmos. Chem. Phys., 17, 12081–12096, https://doi.org/10.5194/acp-17-12081-2017, https://doi.org/10.5194/acp-17-12081-2017, 2017
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Data records from instruments on satellites and on the ground are compared with a simulation for 1980–2016 that is made using winds and temperatures that are derived from measurements. The simulation tracks the observations faithfully after about 2000, but there are systematic errors for earlier years. Scientists must take this into account when trying to detect and quantify changes in the stratospheric circulation that are caused by climate change.
Stefanie Falk, Björn-Martin Sinnhuber, Gisèle Krysztofiak, Patrick Jöckel, Phoebe Graf, and Sinikka T. Lennartz
Atmos. Chem. Phys., 17, 11313–11329, https://doi.org/10.5194/acp-17-11313-2017, https://doi.org/10.5194/acp-17-11313-2017, 2017
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Brominated very short-lived source gases (VSLS) contribute significantly to the tropospheric and stratospheric bromine loading. We find an increase of future ocean–atmosphere flux of brominated VSLS of 8–10 % compared to present day. A decrease in the tropospheric mixing ratios of VSLS and an increase in the lower stratosphere are attributed to changes in atmospheric chemistry and transport. Bromine impact on stratospheric ozone at the end of the 21st century is reduced compared to present day.
Kevin M. Smalley, Andrew E. Dessler, Slimane Bekki, Makoto Deushi, Marion Marchand, Olaf Morgenstern, David A. Plummer, Kiyotaka Shibata, Yousuke Yamashita, and Guang Zeng
Atmos. Chem. Phys., 17, 8031–8044, https://doi.org/10.5194/acp-17-8031-2017, https://doi.org/10.5194/acp-17-8031-2017, 2017
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This paper explains a new way to evaluate simulated lower-stratospheric water vapor. We use a multivariate linear regression to predict 21st century lower stratospheric water vapor within 12 chemistry climate models using tropospheric warming, the Brewer–Dobson circulation, and the quasi-biennial oscillation as predictors. This methodology produce strong fits to simulated water vapor, and potentially represents a superior method to evaluate model trends in lower-stratospheric water vapor.
Felix Ploeger, Paul Konopka, Kaley Walker, and Martin Riese
Atmos. Chem. Phys., 17, 7055–7066, https://doi.org/10.5194/acp-17-7055-2017, https://doi.org/10.5194/acp-17-7055-2017, 2017
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Pollution transport from the surface to the stratosphere within the Asian summer monsoon circulation may cause harmful effects on stratospheric chemistry and climate. We investigate air mass transport from the monsoon anticyclone into the stratosphere, combining model simulations with satellite trace gas measurements. We show evidence for two transport pathways from the monsoon: (i) into the tropical stratosphere and (ii) into the Northern Hemisphere extratropical lower stratosphere.
Jennifer Ostermöller, Harald Bönisch, Patrick Jöckel, and Andreas Engel
Atmos. Chem. Phys., 17, 3785–3797, https://doi.org/10.5194/acp-17-3785-2017, https://doi.org/10.5194/acp-17-3785-2017, 2017
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We analysed the temporal evolution of fractional release factors (FRFs) from EMAC model simulations for several halocarbons and nitrous oxide. The current formulation of FRFs yields values that depend on the tropospheric trend of the species. This is a problematic issue for the application of FRF in the calculation of steady-state quantities (e.g. ODP). Including a loss term in the calculation, we develop a new formulation of FRF and find that the time dependence can almost be compensated.
Sabine Brinkop, Martin Dameris, Patrick Jöckel, Hella Garny, Stefan Lossow, and Gabriele Stiller
Atmos. Chem. Phys., 16, 8125–8140, https://doi.org/10.5194/acp-16-8125-2016, https://doi.org/10.5194/acp-16-8125-2016, 2016
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This study investigates the water vapour decline in the stratosphere beginning in the year 2000 and other similarly strong stratospheric water vapour reductions. The driving forces are tropical sea surface temperature (SST) changes due to coincidence with a preceding ENSO event and supported by the west to east change of the QBO.
There are indications that both SSTs and the specific dynamical state of the atmosphere contribute to the long period of low water vapour values from 2001 to 2006.
Michael Löffler, Sabine Brinkop, and Patrick Jöckel
Atmos. Chem. Phys., 16, 6547–6562, https://doi.org/10.5194/acp-16-6547-2016, https://doi.org/10.5194/acp-16-6547-2016, 2016
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After the two major volcanic eruptions of El Chichón in Mexico in 1982 and Mount Pinatubo on the Philippines in 1991, stratospheric water vapour is significantly increased. This results from increased stratospheric heating rates due to volcanic aerosol and the subsequent changes in stratospheric and tropopause temperatures in the tropics. The tropical vertical advection and the South Asian summer monsoon are identified as important sources for the additional water vapour in the stratosphere.
Laura Thölix, Leif Backman, Rigel Kivi, and Alexey Yu. Karpechko
Atmos. Chem. Phys., 16, 4307–4321, https://doi.org/10.5194/acp-16-4307-2016, https://doi.org/10.5194/acp-16-4307-2016, 2016
J. Aschmann, J. P. Burrows, C. Gebhardt, A. Rozanov, R. Hommel, M. Weber, and A. M. Thompson
Atmos. Chem. Phys., 14, 12803–12814, https://doi.org/10.5194/acp-14-12803-2014, https://doi.org/10.5194/acp-14-12803-2014, 2014
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This study compares observations and simulation results of ozone in the lower tropical stratosphere. It shows that ozone in this region decreased from 1985 up to about 2002, which is consistent with an increase in tropical upwelling predicted by climate models. However, the decrease effectively stops after 2002, indicating that significant changes in tropical upwelling have occurred. The most important factor appears to be that the vertical ascent in the tropics is no longer accelerating.
S. Fadnavis, M. G. Schultz, K. Semeniuk, A. S. Mahajan, L. Pozzoli, S. Sonbawne, S. D. Ghude, M. Kiefer, and E. Eckert
Atmos. Chem. Phys., 14, 12725–12743, https://doi.org/10.5194/acp-14-12725-2014, https://doi.org/10.5194/acp-14-12725-2014, 2014
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The Asian summer monsoon transports pollutants from local emission sources to the upper troposphere and lower stratosphere (UTLS). The increasing trend of these pollutants may have climatic impact. This study addresses the impact of convectively lifted Indian and Chinese emissions on the ULTS. Sensitivity experiments with emission changes in particular regions show that Chinese emissions have a greater impact on the concentrations of NOY species than Indian emissions.
J. S. Knibbe, R. J. van der A, and A. T. J. de Laat
Atmos. Chem. Phys., 14, 8461–8482, https://doi.org/10.5194/acp-14-8461-2014, https://doi.org/10.5194/acp-14-8461-2014, 2014
M. Abalos, F. Ploeger, P. Konopka, W. J. Randel, and E. Serrano
Atmos. Chem. Phys., 13, 10787–10794, https://doi.org/10.5194/acp-13-10787-2013, https://doi.org/10.5194/acp-13-10787-2013, 2013
M. R. Schoeberl, A. E. Dessler, and T. Wang
Atmos. Chem. Phys., 13, 7783–7793, https://doi.org/10.5194/acp-13-7783-2013, https://doi.org/10.5194/acp-13-7783-2013, 2013
J. M. Siddaway, S. V. Petelina, D. J. Karoly, A. R. Klekociuk, and R. J. Dargaville
Atmos. Chem. Phys., 13, 4413–4427, https://doi.org/10.5194/acp-13-4413-2013, https://doi.org/10.5194/acp-13-4413-2013, 2013
F. Khosrawi, R. Müller, J. Urban, M. H. Proffitt, G. Stiller, M. Kiefer, S. Lossow, D. Kinnison, F. Olschewski, M. Riese, and D. Murtagh
Atmos. Chem. Phys., 13, 3619–3641, https://doi.org/10.5194/acp-13-3619-2013, https://doi.org/10.5194/acp-13-3619-2013, 2013
J. A. Schmidt, M. S. Johnson, S. Hattori, N. Yoshida, S. Nanbu, and R. Schinke
Atmos. Chem. Phys., 13, 1511–1520, https://doi.org/10.5194/acp-13-1511-2013, https://doi.org/10.5194/acp-13-1511-2013, 2013
H. E. Rieder, L. Frossard, M. Ribatet, J. Staehelin, J. A. Maeder, S. Di Rocco, A. C. Davison, T. Peter, P. Weihs, and F. Holawe
Atmos. Chem. Phys., 13, 165–179, https://doi.org/10.5194/acp-13-165-2013, https://doi.org/10.5194/acp-13-165-2013, 2013
J. M. Castanheira, T. R. Peevey, C. A. F. Marques, and M. A. Olsen
Atmos. Chem. Phys., 12, 10195–10208, https://doi.org/10.5194/acp-12-10195-2012, https://doi.org/10.5194/acp-12-10195-2012, 2012
M. R. Schoeberl, A. E. Dessler, and T. Wang
Atmos. Chem. Phys., 12, 6475–6487, https://doi.org/10.5194/acp-12-6475-2012, https://doi.org/10.5194/acp-12-6475-2012, 2012
B. Chen, X. D. Xu, S. Yang, and T. L. Zhao
Atmos. Chem. Phys., 12, 5827–5839, https://doi.org/10.5194/acp-12-5827-2012, https://doi.org/10.5194/acp-12-5827-2012, 2012
S. Dhomse, M. P. Chipperfield, W. Feng, and J. D. Haigh
Atmos. Chem. Phys., 11, 12773–12786, https://doi.org/10.5194/acp-11-12773-2011, https://doi.org/10.5194/acp-11-12773-2011, 2011
A. J. G. Baumgaertner, A. Seppälä, P. Jöckel, and M. A. Clilverd
Atmos. Chem. Phys., 11, 4521–4531, https://doi.org/10.5194/acp-11-4521-2011, https://doi.org/10.5194/acp-11-4521-2011, 2011
J. Flemming, A. Inness, L. Jones, H. J. Eskes, V. Huijnen, M. G. Schultz, O. Stein, D. Cariolle, D. Kinnison, and G. Brasseur
Atmos. Chem. Phys., 11, 1961–1977, https://doi.org/10.5194/acp-11-1961-2011, https://doi.org/10.5194/acp-11-1961-2011, 2011
H. E. Rieder, J. Staehelin, J. A. Maeder, T. Peter, M. Ribatet, A. C. Davison, R. Stübi, P. Weihs, and F. Holawe
Atmos. Chem. Phys., 10, 10033–10045, https://doi.org/10.5194/acp-10-10033-2010, https://doi.org/10.5194/acp-10-10033-2010, 2010
T. von Clarmann, G. Stiller, U. Grabowski, E. Eckert, and J. Orphal
Atmos. Chem. Phys., 10, 6737–6747, https://doi.org/10.5194/acp-10-6737-2010, https://doi.org/10.5194/acp-10-6737-2010, 2010
J. Aschmann, B.-M. Sinnhuber, E. L. Atlas, and S. M. Schauffler
Atmos. Chem. Phys., 9, 9237–9247, https://doi.org/10.5194/acp-9-9237-2009, https://doi.org/10.5194/acp-9-9237-2009, 2009
Cited articles
Avery, M., Winker, D., Heymsfield, A., Vaughan, M., Young, S., Hu, Y., and
Trepte, C.: Cloud ice water content retrieved from the CALIOP space-based
lidar, Geophys. Res. Lett., 39, L05808, https://doi.org/10.1029/2011gl050545, 2012.
Avery, M. A., Davis, S. M., Rosenlof, K. H., Ye, H., and Dessler, A. E.:
Large anomalies in lower stratospheric water vapour and ice during the
2015–2016 El Niño, Nat. Geosci., 10, 405–409, https://doi.org/10.1038/ngeo2961,
2017.
Bacmeister, J. T., Suarez, M. J., and Robertson, F. R.: Rain Reevaporation,
Boundary Layer–Convection Interactions, and Pacific Rainfall Patterns in an
AGCM, J. Atmos. Sci., 63, 3383–3403, https://doi.org/10.1175/JAS3791.1, 2006.
Bannister, R. N., O'Neill, A., Gregory, A. R., and Nissen, K. M.: The role of
the south-east Asian monsoon and other seasonal features in creating the
`tape-recorder' signal in the Unified Model, Q. J. Roy. Meteorol. Soc.,
130, 1531–1554, https://doi.org/10.1256/qj.03.106, 2004.
Barahona, D., Molod, A., Bacmeister, J., Nenes, A., Gettelman, A., Morrison, H., Phillips, V., and Eichmann, A.: Development of two-moment cloud microphysics for liquid and ice within the NASA Goddard Earth Observing System Model (GEOS-5), Geosci. Model Dev., 7, 1733–1766, https://doi.org/10.5194/gmd-7-1733-2014, 2014.
Bian, J., Pan, L. L., Paulik, L., Vömel, H., Chen, H., and Lu, D.: In
situ water vapor and ozone measurements in Lhasa and Kunming during the
Asian summer monsoon, Geophys. Res. Lett., 39, L19808,
https://doi.org/10.1029/2012GL052996, 2012.
Bowman, K. P.: Large-scale isentropic mixing properties of the Antarctic
polar vortex from analyzed winds, J. Geophys. Res.-Atmos., 98,
23013–23027, https://doi.org/10.1029/93JD02599, 1993.
Bowman, K. P. and Carrie, G. D.: The mean-meridional transport circulation
of the troposphere in an idealized (GCM), J.
Atmos. Sci., 59, 1502–1514, https://doi.org/10.1175/1520-0469(2002)059<1502:TMMTCO>2.0.CO;2, 2002.
Brewer, A. W.: Evidence for a world circulation provided by the measurements
of helium and water vapour distribution in the stratosphere, Q. J. Roy.
Meteorol. Soc., 75, 351–363, https://doi.org/10.1002/qj.49707532603, 1949.
Corti, T., Luo, B. P., de Reus, M., Brunner, D., Cairo, F., Mahoney, M. J.,
Martucci, G., Matthey, R., Mitev, V., dos Santos, F. H., Schiller, C., Shur,
G., Sitnikov, N. M., Spelten, N., Vössing, H. J., Borrmann, S., and
Peter, T.: Unprecedented evidence for deep convection hydrating the tropical
stratosphere, Geophys. Res. Lett., 35, L10810,
https://doi.org/10.1029/2008GL033641, 2008.
Dee, D. P., Uppala, S. M., Simmons, A. J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M. A., Balsamo, G., Bauer, P., Bechtold, P., Beljaars, A. C. M., van de Berg, L., Bidlot, J., Bormann, N., Delsol, C., Dragani, R., Fuentes, M., Geer, A. J., Haimberger, L., Healy, S. B., Hersbach, H., Hólm, E. V., Isaksen, L., Kållberg, P., Köhler, M., Matricardi, M., McNally, A. P., Monge-Sanz, B. M., Morcrette, J.-J., Park, B.-K., Peubey, C., de Rosnay, P., Tavolato, C., Thépaut, J.-N., and Vitart, F.: The ERA-Interim reanalysis: configuration and performance of the data assimilation system, Q. J. Roy. Meteorol. Soc., 137, 553–597. https://doi.org/10.1002/qj.828, 2011.
Dessler, A. E. and Sherwood, S. C.: Effect of convection on the summertime
extratropical lower stratosphere, J. Geophys. Res.-Atmos., 109, D23301,
https://doi.org/10.1029/2004JD005209, 2004.
Dessler, A. E., Hanisco, T. F., and Fueglistaler, S.: Effects of convective
ice lofting on H2O and HDO in the tropical tropopause layer, J. Geophys.
Res., 112, D18309, https://doi.org/10.1029/2007JD008609, 2007.
Dessler, A. E., Ye, H., Wang, T., Schoeberl, M. R., Oman, L. D., Douglass,
A. R., Butler, A. H., Rosenlof, K. H., Davis, S. M., and Portmann, R. W.:
Transport of ice into the stratosphere and the humidification of the
stratosphere over the 21st century, Geophys. Res. Lett., 43, 2323–2329,
https://doi.org/10.1002/2016GL067991, 2016.
Dethof, A., O'Neill, A., Slingo, J. M., and Smit, H. G. J.: A mechanism for
moistening the lower stratosphere involving the Asian summer monsoon, Q. J.
Roy. Meteorol. Soc., 125, 1079–1106, https://doi.org/10.1002/qj.1999.49712555602,
1999.
Dvortsov, V. L. and Solomon, S.: Response of the stratospheric temperatures
and ozone to past and future increases in stratospheric humidity, J.
Geophys. Res.-Atmos., 106, 7505–7514, https://doi.org/10.1029/2000JD900637, 2001.
Fu, R., Hu, Y., Wright, J. S., Jiang, J. H., Dickinson, R. E., Chen, M.,
Filipiak, M., Read, W. G., Waters, J. W., and Wu, D. L.: Short circuit of
water vapor and polluted air to the global stratosphere by convective
transport over the Tibetan Plateau, P. Natl. Acad. Sci. USA, 103, 5664–5669,
https://doi.org/10.1073/pnas.0601584103, 2006.
Fueglistaler, S.: Stratospheric water vapor predicted from the Lagrangian
temperature history of air entering the stratosphere in the tropics, J.
Geophys. Res., 110, D08107, https://doi.org/10.1029/2004JD005516, 2005.
Fueglistaler, S., Dessler, A. E., Dunkerton, T. J., Folkins, I., Fu, Q., and
Mote, P. W.: Tropical tropopause layer, Rev. Geophys., 47, 1–31,
https://doi.org/10.1029/2008RG000267, 2009.
Gelaro, R., McCarty, W., Suárez, M. J., Todling, R., Molod, A., Takacs,
L., Randles, C. A., Darmenov, A., Bosilovich, M. G., Reichle, R., Wargan,
K., Coy, L., Cullather, R., Draper, C., Akella, S., Buchard, V., Conaty, A.,
da Silva, A. M., Gu, W., Kim, G.-K., Koster, R., Lucchesi, R., Merkova, D.,
Nielsen, J. E., Partyka, G., Pawson, S., Putman, W., Rienecker, M.,
Schubert, S. D., Sienkiewicz, M., and Zhao, B.: The Modern-Era Retrospective
Analysis for Research and Applications, Version 2 (MERRA-2), J. Climate,
30, 5419–5454, https://doi.org/10.1175/JCLI-D-16-0758.1, 2017.
Gent, P. R., Danabasoglu, G., Donner, L. J., Holland, M. M., Hunke, E. C.,
Jayne, S. R., Lawrence, D. M., Neale, R. B., Rasch, P. J., Vertenstein, M.,
Worley, P. H., Yang, Z.-L., and Zhang, M.: The Community Climate System Model
Version 4, J. Climate, 24, 4973–4991, https://doi.org/10.1175/2011JCLI4083.1, 2011.
Gettelman, A., Kinnison, D. E., Dunkerton, T. J., and Brasseur, G. P.: Impact
of monsoon circulations on the upper troposphere and lower stratosphere, J.
Geophys. Res.-Atmos., 109, D22101, https://doi.org/10.1029/2004JD004878, 2004.
Global Modeling and Assimilation Office (GMAO): MERRA-2 inst6_3d_ana_Nv: 3d,6-Hourly, Instantaneous,Model-Level, Analysis, Analyzed Meteorological Fields V5.12.4, Goddard Earth Sciences Data and Information Services Center (GES DISC), Greenbelt, MD, USA, last access: 21 November 2018, https://doi.org/10.5067/IUUF4WB9FT4W, 2015.
Hanisco, T. F., Moyer, E. J., Weinstock, E. M., St. Clair, J. M., Sayres, D.
S., Smith, J. B., Lockwood, R., Anderson, J. G., Dessler, A. E., Keutsch, F.
N., Spackman, J. R., Read, W. G., and Bui, T. P.: Observations of deep
convective influence on stratospheric water vapor and its isotopic
composition, Geophys. Res. Lett., 34, L04814, https://doi.org/10.1029/2006GL027899,
2007.
Heymsfield, A., Winker, D., Avery, M., Vaughan, M., Diskin, G., Deng, M.,
Mitev, V., and Matthey, R.: Relationships between Ice Water Content and
Volume Extinction Coefficient from In Situ Observations for Temperatures
from 0∘ to −86 ∘C: Implications for Spaceborne Lidar
Retrievals, J. Appl. Meteorol. Climatol., 53, 479–505,
https://doi.org/10.1175/JAMC-D-13-087.1, 2014.
Holton, J. R., Haynes, P. H., McIntyre, M. E., Douglass, A. R., Rood, R. B.,
and Pfister, L.: Stratosphere-troposphere exchange, Rev. Geophys., 33,
403, https://doi.org/10.1029/95RG02097, 1995.
Hu, Y., Winker, D., Vaughan, M., Lin, B., Omar, A., Trepte, C., Flittner,
D., Yang, P., Nasiri, S. L., Baum, B., Holz, R., Sun, W., Liu, Z., Wang, Z.,
Young, S., Stamnes, K., Huang, J., and Kuehn, R.: CALIPSO/CALIOP Cloud Phase
Discrimination Algorithm, J. Atmos. Ocean. Tech., 26, 2293–2309,
https://doi.org/10.1175/2009JTECHA1280.1, 2009.
Jackson, D. R., Driscoll, S. J., Highwood, E. J., Harries, J. E., and
Russell, J. M.: Troposphere to stratosphere transport at low latitudes as
studies using HALOE observations of water vapour 1992–1997, Q. J. Roy.
Meteorol. Soc., 124, 169–192, https://doi.org/10.1002/qj.49712454508, 1998.
James, R., Bonazzola, M., Legras, B., Surbled, K., and Fueglistaler, S.:
Water vapor transport and dehydration above convective outflow during Asian
monsoon, Geophys. Res. Lett., 35, L20810, https://doi.org/10.1029/2008GL035441, 2008.
Jensen, E. J., Diskin, G., Lawson, R. P., Lance, S., Bui, T. P., Hlavka, D.,
McGill, M., Pfister, L., Toon, O. B., and Gao, R.: Ice nucleation and
dehydration in the Tropical Tropopause Layer, P. Natl. Acad. Sci. USA,
110(6), 2041–2046, https://doi.org/10.1073/pnas.1217104110, 2013.
Kärcher, B., Hendricks, J., and Lohmann, U.: Physically based
parameterization of cirrus cloud formation for use in global atmospheric
models, J. Geophys. Res., 111, D01205, https://doi.org/10.1029/2005JD006219, 2006.
Lambert, A., Read, W. G., Livesey, N. J., Santee, M. L., Manney, G. L.,
Froidevaux, L., Wu, D. L., Schwartz, M. J., Pumphrey, H. C., Jimenez, C.,
Nedoluha, G. E., Cofield, R. E., Cuddy, D. T., Daffer, W. H., Drouin, B. J.,
Fuller, R. A., Jarnot, R. F., Knosp, B. W., Pickett, H. M., Perun, V. S.,
Snyder, W. V, Stek, P. C., Thurstans, R. P., Wagner, P. A., Waters, J. W.,
Jucks, K. W., Toon, G. C., Stachnik, R. A., Bernath, P. F., Boone, C. D.,
Walker, K. A., Urban, J., Murtagh, D., Elkins, J. W., and Atlas, E.:
Validation of the Aura Microwave Limb Sounder middle atmosphere water vapor
and nitrous oxide measurements, J. Geophys. Res.-Atmos., 112, D24S36,
https://doi.org/10.1029/2007JD008724, 2007.
Lambert, A., Read, W., and Livesey, N.: MLS/Aura Level 2 Water Vapor (H2O) Mixing Ratio V004, Goddard Earth Sciences Data and Information Services Center (GES DISC), Greenbelt, MD, USA, last access: 30 November 2018, https://doi.org/10.5067/Aura/MLS/DATA2009, 2015.
Liu, Z., Vaughan, M., Winker, D., Kittaka, C., Getzewich, B., Kuehn, R.,
Omar, A., Powell, K., Trepte, C., and Hostetler, C.: The CALIPSO Lidar Cloud
and Aerosol Discrimination: Version 2 Algorithm and Initial Assessment of
Performance, J. Atmos. Ocean. Tech., 26, 1198–1213,
https://doi.org/10.1175/2009JTECHA1229.1, 2009.
Livesey, N. J., Read, W. G., Wagner, P. A., Froidevaux, L., Lambert, A.,
Manney, G. L., Millán-Valle, L. F., Pumphrey, H. C., Santee, M. L.,
Schwartz, M. J., Wang, S., Fuller, R. A., Jarnot, R. F., Knosp, B. W., and
Martinez, E.: Earth Observing System (EOS) Aura Microwave Limb Sounder
(MLS), Version 4.2x Level 2 data quality and description document, Tech.
Rep. JPL D-33509, Tech. Rep. version 4.2x-3.0, NASA Jet Propulsion
Laboratory, 2017.
Luo, J., Pan, L. L., Honomichl, S. B., Bergman, J. W., Randel, W. J., Francis, G., Clerbaux, C., George, M., Liu, X., and Tian, W.: Space–time variability in UTLS chemical distribution in the Asian summer monsoon viewed by limb and nadir satellite sensors, Atmos. Chem. Phys., 18, 12511–12530, https://doi.org/10.5194/acp-18-12511-2018, 2018.
Molod, A., Takacs, L., Suarez, M., Bacmeister, J., Song, I.-S., and
Eichmann, A.: The GEOS-5 atmospheric general circulation model: Mean climate
and development from MERRA to Fortuna, Technical Report Series on Global
Modeling and Data Assimilation Volume 28, NASA Goddard Space Flight Center,
2012.
Molod, A., Takacs, L., Suarez, M., and Bacmeister, J.: Development of the GEOS-5 atmospheric general circulation model: evolution from MERRA to MERRA2, Geosci. Model Dev., 8, 1339–1356, https://doi.org/10.5194/gmd-8-1339-2015, 2015.
Mote, P. W., Rosenloh, K. H., Holton, J. R., Harwood, R. S., and Waters, J.
W.: Seasonal variations of water vapor in the tropical lower stratosphere,
Geophys. Res. Lett., 22, 1093–1096, https://doi.org/10.1029/95GL01234, 1995.
Mote, P. W., Rosenlof, K. H., McIntyre, M. E., Carr, E. S., Gille, J. C.,
Holton, J. R., Kinnersley, J. S., Pumphrey, H. C., Russell III, J. M., and
Waters, J. W.: An atmospheric tape recorder: The imprint of tropical
tropopause temperatures on stratospheric water vapor, J. Geophys. Res.,
101, 3989–4006, https://doi.org/10.1029/95JD03422, 1996.
Moyer, E. J., Irion, F. W., Yung, Y. L., and Gunson, M. R.: ATMOS
stratospheric deuterated water and implications for troposphere-stratosphere
transport, Geophys. Res. Lett., 23, 2385–2388, https://doi.org/10.1029/96GL01489,
1996.
Murphy, D. M. and Koop, T.: Review of the vapour pressures of ice and
supercooled water for atmospheric applications, Q. J. Roy. Meteorol. Soc.,
131, 1539–1565, https://doi.org/10.1256/qj.04.94, 2005.
Nielsen, J. K., Larsen, N., Cairo, F., Di Donfrancesco, G., Rosen, J. M., Durry, G., Held, G., and Pommereau, J. P.: Solid particles in the tropical lowest stratosphere, Atmos. Chem. Phys., 7, 685–695, https://doi.org/10.5194/acp-7-685-2007, 2007.
Oman, L. D. and Douglass, A. R.: Improvements in total column ozone in
GEOSCCM and comparisons with a new ozone-depleting substances scenario, J.
Geophys. Res.-Atmos., 119, 5613–5624, https://doi.org/10.1002/2014JD021590, 2014.
Pan, L., Solomon, S., Randel, W., Lamarque, J.-F., Hess, P., Gille, J.,
Chiou, E.-W., and McCormick, M. P.: Hemispheric asymmetries and seasonal
variations of the lowermost stratospheric water vapor and ozone derived from
SAGE II data, J. Geophys. Res.-Atmos., 102, 28177–28184,
https://doi.org/10.1029/97JD02778, 1997.
Pan, L. L., Hintsa, E. J., Stone, E. M., Weinstock, E. M., and Randel, W. J.:
The seasonal cycle of water vapor and saturation vapor mixing ratio in the
extratropical lowermost stratosphere, J. Geophys. Res.-Atmos., 105,
26519–26530, https://doi.org/10.1029/2000JD900401, 2000.
Pan, L. L., Honomichl, S. B., Kinnison, D. E., Abalos, M., Randel, W. J.,
Bergman, J. W., and Bian, J.: Transport of chemical tracers from the boundary
layer to stratosphere associated with the dynamics of the Asian summer
monsoon, J. Geophys. Res.-Atmos., 121, 14159–14174,
https://doi.org/10.1002/2016JD025616, 2016.
Park, M., Randel, W. J., Kinnison, D. E., Garcia, R. R., and Choi, W.:
Seasonal variation of methane, water vapor, and nitrogen oxides near the
tropopause: Satellite observations and model simulations, J. Geophys. Res.-Atmos., 109, D03302, https://doi.org/10.1029/2003JD003706, 2004.
Park, M., Randel, W. J., Gettelman, A., Massie, S. T., and Jiang, J. H.:
Transport above the Asian summer monsoon anticyclone inferred from Aura
Microwave Limb Sounder tracers, J. Geophys. Res.-Atmos., 112, D16309, https://doi.org/10.1029/2006JD008294, 2007.
Pawson, S., Stolarski, R. S., Douglass, A. R., Newman, P. A., Nielsen, J.
E., Frith, S. M., and Gupta, M. L.: Goddard Earth Observing System
chemistry-climate model simulations of stratospheric ozone-temperature
coupling between 1950 and 2005, J. Geophys. Res., 113, D12103,
https://doi.org/10.1029/2007JD009511, 2008.
Ploeger, F., Günther, G., Konopka, P., Fueglistaler, S., Müller, R.,
Hoppe, C., Kunz, A., Spang, R., Grooß, J.-U., and Riese, M.: Horizontal
water vapor transport in the lower stratosphere from subtropics to high
latitudes during boreal summer, J. Geophys. Res.-Atmos., 118,
8111–8127, https://doi.org/10.1002/jgrd.50636, 2013.
Randel, W. J. and Park, M.: Deep convective influence on the Asian summer
monsoon anticyclone and associated tracer variability observed with
Atmospheric Infrared Sounder (AIRS), J. Geophys. Res., 111, D12314,
https://doi.org/10.1029/2005JD006490, 2006.
Randel, W. J., Wu, F., Russell, J. M., Roche, A., and Waters, J. W.: Seasonal
Cycles and QBO Variations in Stratospheric CH4 and H2O Observed in UARSHALOE
Data, J. Atmos. Sci., 55, 163–185,
https://doi.org/10.1175/1520-0469(1998)055<0163:Scaqvi>2.0.Co;2,
1998.
Randel, W. J., Wu, F., Gettelman, A., Russell, J. M., Zawodny, J. M., and
Oltmans, S. J.: Seasonal variation of water vapor in the lower stratosphere
observed in Halogen Occultation Experiment data, J. Geophys. Res.-Atmos.,
106, 14313–14325, https://doi.org/10.1029/2001jd900048, 2001.
Randel, W. J., Moyer, E., Park, M., Jensen, E., Bernath, P., Walker, K., and
Boone, C.: Global variations of HDO and HDO∕H2O ratios in the upper
troposphere and lower stratosphere derived from ACE-FTS satellite
measurements, J. Geophys. Res.-Atmos., 117, D06303,
https://doi.org/10.1029/2011JD016632, 2012.
Randel, W. J., Zhang, K., and Fu, R.: What controls stratospheric water vapor
in the NH summer monsoon regions?, J. Geophys. Res.-Atmos., 120,
7988–8001, https://doi.org/10.1002/2015JD023622, 2015.
Rienecker, M. M., Suarez, M. J., Todling, R., Bacmeister, J., Takacs, L., Liu,
H.-C., Gu, W., Sienkiewicz, M., Koster, R. D., Gelaro, R., Stajner, I., and
Nielsen J. E.: The GEOS-5 data assimilation system – Documentation of
versions 5.0.1, 5.1.0, and 5.2.0, Technical Report Series on Global Modeling
and Data Assimilation, Volume 27, NASA Goddard Space Flight Center
Greenbelt, 2008.
Rosenlof, K. H.: Hemispheric asymmetries in water vapor and inferences about
transport in the lower stratosphere, J. Geophys. Res.-Atmos., 102,
13213–13234, https://doi.org/10.1029/97JD00873, 1997.
Schoeberl, M., Dessler, A., Ye, H., Wang, T., Avery, M., and Jensen, E.: The
impact of gravity waves and cloud nucleation threshold on stratospheric
water and tropical tropospheric cloud fraction, Earth Space Sci., 3,
295–305, https://doi.org/10.1002/2016EA000180, 2016.
Schoeberl, M. R. and Dessler, A. E.: Dehydration of the stratosphere, Atmos. Chem. Phys., 11, 8433–8446, https://doi.org/10.5194/acp-11-8433-2011, 2011.
Schoeberl, M. R., Douglass, A. R., Newman, P. A., Lait, L. R., Lary, D.,
Waters, J., Livesey, N., Froidevaux, L., Lambert, A., Read, W., Filipiak, M.
J., and Pumphrey, H. C.: QBO and annual cycle variations in tropical lower
stratosphere trace gases from HALOE and Aura MLS observations, J. Geophys.
Res.-Atmos., 113, D05301, https://doi.org/10.1029/2007JD008678, 2008.
Schoeberl, M. R., Dessler, A. E., and Wang, T.: Modeling upper tropospheric and lower stratospheric water vapor anomalies, Atmos. Chem. Phys., 13, 7783–7793, https://doi.org/10.5194/acp-13-7783-2013, 2013.
Schoeberl, M. R., Dessler, A. E., Wang, T., Avery, M. A., and Jensen, E. J.:
Cloud formation, convection, and stratospheric dehydration, Earth Space Sci.,
1, 1–17, https://doi.org/10.1002/2014EA000014, 2014.
Schoeberl, M. R., Jensen, E. J., and Woods, S.: Gravity waves amplify upper
tropospheric dehydration by clouds, Earth Space Sci., 2, 485–500,
https://doi.org/10.1002/2015EA000127, 2015.
Schoeberl, M. R., Jensen, E. J., Pfister, L., Ueyama, R., Avery, M., and
Dessler, A. E.: Convective Hydration of the Upper Troposphere and Lower
Stratosphere, J. Geophys. Res.-Atmos., 123, 4583–4593,
https://doi.org/10.1029/2018JD028286, 2018.
Schoeberl, M. R., Jensen, E. J., Pfister, L., Ueyama, R., Wang, T., Selkirk,
H., Avery, M., Thornberry, T., and Dessler, A. E.: Water Vapor, Clouds, and
Saturation in the Tropical Tropopause Layer, J. Geophys. Res.-Atmos.,
124, 3984–4003, https://doi.org/10.1029/2018JD029849, 2019.
Schwartz, M. J., Read, W. G., Santee, M. L., Livesey, N. J., Froidevaux, L.,
Lambert, A., and Manney, G. L.: Convectively injected water vapor in the
North American summer lowermost stratosphere, Geophys. Res. Lett., 40,
2316–2321, https://doi.org/10.1002/grl.50421, 2013.
Solomon, S., Garcia, R. R., Rowland, F. S., and Wuebbles, D. J.: On the
depletion of Antarctic ozone, Nature, 321, 755–758,
https://doi.org/10.1038/321755a0, 1986.
Steinwagner, J., Fueglistaler, S., Stiller, G., von Clarmann, T., Kiefer,
M., Borsboom, P.-P., van Delden, A., and Röckmann, T.: Tropical
dehydration processes constrained by the seasonality of stratospheric
deuterated water, Nat. Geosci., 3, 262, https://doi.org/10.1038/ngeo822, 2010.
Ueyama, R., Jensen, E. J., Pfister, L., and Kim, J.-E.: Dynamical,
convective, and microphysical control on wintertime distributions of water
vapor and clouds in the tropical tropopause layer, J. Geophys. Res.-Atmos.,
120, 410–483, https://doi.org/10.1002/2015JD023318, 2015.
Ueyama, R., Jensen, E. J., and Pfister, L.: Convective Influence on the
Humidity and Clouds in the Tropical Tropopause Layer During Boreal Summer,
J. Geophys. Res.-Atmos., 123, 7576–7593, https://doi.org/10.1029/2018JD028674, 2018.
Vaughan, M. A., Powell, K. A., Winker, D. M., Hostetler, C. A., Kuehn, R.
E., Hunt, W. H., Getzewich, B. J., Young, S. A., Liu, Z., and McGill, M. J.:
Fully Automated Detection of Cloud and Aerosol Layers in the CALIPSO Lidar
Measurements, J. Atmos. Ocean. Tech., 26, 2034–2050,
https://doi.org/10.1175/2009JTECHA1228.1, 2009.
Van Vuuren, D. P., Edmonds, J., Kainuma, M., Riahi, K., Thomson, A., Hibbard, K., Hurtt, G. C., Kram, T., Krey, V., Lamarque, J.-F., Masui, T., Meinshausen, M., Nakicenovic, N., Smith, S. J., and Rose, S. K.:
The representative concentration pathways: an overview, Clim. Change, 109,
5–31, https://doi.org/10.1007/s10584-011-0148-z, 2011.
Wang, X.: Code and data for acp Wang et al 2019, available at: https://github.com/xunwang15/Code-and-data-for-acp-Wang-et-al-2019, last access: November 2019.
Wang, X., Dessler, A. E., Schoeberl, M. R., Yu, W., and Wang T.: Water vapor in the tropical tropopause layer to reproduce seasonal cycles in Wang et al paper, last access: 15 September 2019, https://doi.org/10.5281/zenodo.3543818, 2019.
Winker, D.: CALIPSO Lidar Level 2 Cloud Profile Data V4-20, last access: 10 October 2018, https://doi.org/10.5067/CALIOP/CALIPSO/LID_L2_05KMCPRO-STANDARD-V4-20, 2018.
Winker, D. M., Vaughan, M. A., Omar, A., Hu, Y., Powell, K. A., Liu, Z.,
Hunt, W. H., and Young, S. A.: Overview of the CALIPSO Mission and CALIOP
Data Processing Algorithms, J. Atmos. Ocean. Tech., 26, 2310–2323,
https://doi.org/10.1175/2009jtecha1281.1, 2009.
Winker, D. M., Pelon, J., Coakley, J. A., Ackerman, S. A., Charlson, R. J.,
Colarco, P. R., Flamant, P., Fu, Q., Hoff, R. M., Kittaka, C., Kubar, T. L.,
Le Treut, H., Mccormick, M. P., Mégie, G., Poole, L., Powell, K.,
Trepte, C., Vaughan, M. A., and Wielicki, B. A.: The CALIPSO Mission, B.
Am. Meteor. Soc., 91, 1211–1230, https://doi.org/10.1175/2010BAMS3009.1, 2010.
Woods, S., Lawson, R. P., Jensen, E., Bui, T. P., Thornberry, T., Rollins,
A., Pfister, L., and Avery, M.: Microphysical Properties of Tropical
Tropopause Layer Cirrus, J. Geophys. Res.-Atmos., 123, 6053–6069,
https://doi.org/10.1029/2017JD028068, 2018.
World Meteorological Organization: Scientific assessment of ozone depletion: 2010, Global Ozone Research and Monitoring Project–Report No. 52, World Meteorological Organization, Geneva, Switzerland, 2011.
Wright, J. S., Fu, R., Fueglistaler, S., Liu, Y. S., and Zhang, Y.: The
influence of summertime convection over Southeast Asia on water vapor in the
tropical stratosphere, J. Geophys. Res.-Atmos., 116, 1–12,
https://doi.org/10.1029/2010JD015416, 2011.
Ye, H., Dessler, A. E., and Yu, W.: Effects of convective ice evaporation on interannual variability of tropical tropopause layer water vapor, Atmos. Chem. Phys., 18, 4425–4437, https://doi.org/10.5194/acp-18-4425-2018, 2018.
Young, S. A. and Vaughan, M. A.: The Retrieval of Profiles of Particulate
Extinction from Cloud-Aerosol Lidar Infrared Pathfinder Satellite
Observations (CALIPSO) Data: Algorithm Description, J. Atmos. Ocean.
Tech., 26, 1105–1119, https://doi.org/10.1175/2008JTECHA1221.1, 2009.
Short summary
We use a trajectory model to diagnose mechanisms that produce the observed and modeled tropical lower stratospheric water vapor seasonal cycle. We confirm that the seasonal cycle of water vapor is primarily determined by the seasonal cycle of tropical tropopause layer (TTL) temperatures. However, between 10° N and 40° N, we find that evaporation of convective ice in the TTL plays a key role contributing to the water vapor seasonal cycle there. The Asian monsoon region is the most important region.
We use a trajectory model to diagnose mechanisms that produce the observed and modeled tropical...
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