Articles | Volume 20, issue 20
https://doi.org/10.5194/acp-20-12153-2020
© Author(s) 2020. 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-20-12153-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Oct 2020
Research article |
| 27 Oct 2020
| 27 Oct 2020
Influence of convection on stratospheric water vapor in the North American monsoon region
Department of Atmospheric Sciences, Texas A & M University, College Station, TX, USA
Department of Atmospheric Sciences, Texas A & M University, College Station, TX, USA
Mijeong Park
National Center for Atmospheric Research, Boulder, CO, USA
Eric J. Jensen
National Center for Atmospheric Research, Boulder, CO, USA
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To improve the representations of cirrus clouds in climate predictions, extended knowledge of their properties and geographical distribution is required. This study presents extensive airborne in situ and satellite remote sensing climatologies of cirrus and humidity, which serve as a guide to cirrus clouds. Further, exemplary radiative characteristics of cirrus types and also in situ observations of tropical tropopause layer cirrus and humidity in the Asian monsoon anticyclone are shown.
Cited articles
Anderson, J. G., Wilmouth, D. M., Smith, J. B., and Sayres, D. S.: UV dosage
levels in summer: Increased risk of ozone loss from convectively injected
water vapor, Science, 337, 835–839, https://doi.org/10.1126/science.1222978, 2012. a
Bergman, J. W., Jensen, E. J., Pfister, L., and Yang, Q.: Seasonal differences of vertical-transport efficiency in the tropical tropopause layer: On the interplay between tropical deep convection, large-scale vertical ascent, and horizontal circulations, J. Geophys. Res.-Atmos., 117, D05302, https://doi.org/10.1029/2011JD016992, 2012. a
Bergman, J. W., Fierli, F., Jensen, E. J., Honomichl, S., and Pan, L. L.:
Boundary layer sources for the Asian anticyclone: Regional contributions to a
vertical conduit, J. Geophys. Res.-Atmos., 118, 2560–2575, https://doi.org/10.1002/jgrd.50142, 2013. a
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. a
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. a
Clapp, C., Smith, J., Bedka, K., and Anderson, J.: Identifying Source Regions
and the Distribution of Cross-Tropopause Convective Outflow Over North
America During the Warm Season, J. Geophys. Res.-Atmos., 124, 13750–13762, https://doi.org/10.1029/2019JD031382, 2019. a, b
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. a, b
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. a
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.-Atmos., 112, D18309, https://doi.org/10.1029/2007jd008609, 2007. a
Dessler, A. E., Schoeberl, M. R., Wang, T., Davis, S. M., and Rosenlof, K. H.: Stratospheric water vapor feedback, P. Natl. Acad. Sci. USA, 110, 18087–18091, https://doi.org/10.1073/pnas.1310344110, 2013. a
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. a
Evans, S. J., Toumi, R., Harries, J. E., Chipperfield, M. P., and Russell, J. M.: Trends in stratospheric humidity and the sensitivity of ozone to these trends, J. Geophys. Res.-Atmos., 103, 8715–8725, https://doi.org/10.1029/98jd00265, 1998. a
Forster, P. M. and Shine, K. P.: Radiative forcing and temperature trends from stratospheric ozone changes, J. Geophys. Res.-Atmos., 102, 10841–10855, https://doi.org/10.1029/96JD03510, 1997. a
Forster, P. M. D. F. and Shine, K. P.: Assessing the climate impact of trends
in stratospheric water vapor, Geophys. Res. Lett., 29, 1086, https://doi.org/10.1029/2001GL013909, 2002. a
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. a
Fueglistaler, S., Dessler, A. E., Dunkerton, T. J., Folkins, I., Fu, Q., and
Mote, P. W.: Tropical tropopause layer, Rev. Geophys., 47, RG1004,
https://doi.org/10.1029/2008RG000267, 2009. a
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. ., 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. a, b
Herman, R. L., Ray, E. A., Rosenlof, K. H., Bedka, K. M., Schwartz, M. J., Read, W. G., Troy, R. F., Chin, K., Christensen, L. E., Fu, D., Stachnik, R. A., Bui, T. P., and Dean-Day, J. M.: Enhanced stratospheric water vapor over the summertime continental United States and the role of overshooting convection, Atmos. Chem. Phys., 17, 6113–6124, https://doi.org/10.5194/acp-17-6113-2017, 2017. a
Homeyer, C. R.: Formation of the Enhanced-V Infrared Cloud-Top Feature from
High-Resolution Three-Dimensional Radar Observations, J. Atmos. Sci., 71, 332–348, https://doi.org/10.1175/JAS-D-13-079.1, 2014. a, b
Homeyer, C. R. and Kumjian, M. R.: Microphysical Characteristics of Overshooting Convection from Polarimetric Radar Observations, J. Atmos. Sci., 72, 870–891, https://doi.org/10.1175/JAS-D-13-0388.1, 2015. a
Kim, J., Randel, W. J., and Birner, T.: Convectively Driven Tropopause-Level
Cooling and Its Influences on Stratospheric Moisture, J. Geophys. Res.-Atmos., 123, 590–606, https://doi.org/10.1002/2017JD027080, 2018. a
Liu, N. and Liu, C.: Global distribution of deep convection reaching tropopause in 1 year GPM observations, J. Geophys. Res., 121, 3824–3842, https://doi.org/10.1002/2015JD024430, 2016. a
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., Martinez, E., and Lay, R. R.: Earth Observing System (EOS) Aura Microwave Limb Sounder (MLS), Tech. rep., NASA Jet Propulsion Laboratory, available at: https://mls.jpl.nasa.gov/data/v4-2_data_quality_document.pdf (last access: October 2020), 2018. a
Mote, P. W., Rosenlof, K. H., Mcintyre, E., Carr, E. S., Gille, J. C., Holton, R., Kinnersley, S., Pumphrey, H. C., Russell, M., and Wal, J. W.: An
Atmospheric Tape Recorder, J. Geophys. Res.-Atmos., 101, 3989–4006, https://doi.org/10.1029/95JD03422, 1996. a
Ramaswamy, V., Schwarzkopf, M. D., and Randel, W. J.: Fingerprint of ozone
depletion in the spatial and temporal pattern of recent lower-stratospheric
cooling, Nature, 382, 616–618, https://doi.org/10.1038/382616a0, 1996. a
Randel, W. J., Wu, F., Oltmans, S. J., Rosenlof, K., and Nedoluha, G. E.:
Interannual changes of stratospheric water vapor and correlations with tropical tropopause temperatures, J. Atmos. Sci., 61, 2133–2148, https://doi.org/10.1175/1520-0469(2004)061<2133:ICOSWV>2.0.CO;2, 2004. a
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. a, b, c
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. a
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. a
Sherwood, S. C. and Dessler, A. E.: On the control of stratospheric humidity,
Geophys. Res. Lett., 27, 2513–2516, 2000. a
Shindell, D. T.: Climate and ozone response to increased stratospheric water
vapor, Geophys. Res. Lett., 28, 1551–1554, https://doi.org/10.1029/1999GL011197, 2001. a
Smith, C. A., Haigh, J. D., and Toumi, R.: Radiative forcing due to trends in
stratospheric water vapour, Geophys. Res. Lett., 28, 179–182, 2001. a
Smith, J. B., Wilmouth, D. M., Bedka, K. M., Bowman, K. P., Homeyer, C. R.,
Dykema, J. A., Sargent, M. R., Clapp, C. E., Leroy, S. S., Sayres, D. S.,
Dean-Day, J. M., Paul Bui, T., and Anderson, J. G.: A case study of convectively sourced water vapor observed in the overworld stratosphere over
the United States, J. Geophys. Res.-Atmos., 122, 9529–9554, https://doi.org/10.1002/2017JD026831, 2017. a, b, c, d
Solomon, D. L., Bowman, K. P., Homeyer, C. R., Solomon, D. L., Bowman, K. P.,
and Homeyer, C. R.: Tropopause-Penetrating Convection from Three-Dimensional
Gridded NEXRAD Data, J. Appl. Meteorol. Clim., 55, 465–478, https://doi.org/10.1175/JAMC-D-15-0190.1, 2016.
a, b
Solomon, S., Rosenlof, K. H., Portmann, R. W., Daniel, J. S., Davis, S. M.,
Sanford, T. J., and Plattner, G. K.: Contributions of stratospheric water vapor to decadal changes in the rate of global warming, Science, 327, 1219–1223, https://doi.org/10.1126/science.1182488, 2010. a
Stenke, A. and Grewe, V.: Simulation of stratospheric water vapor trends: impact on stratospheric ozone chemistry, Atmos. Chem. Phys., 5, 1257–1272, https://doi.org/10.5194/acp-5-1257-2005, 2005. a
Sun, Y. and Huang, Y.: An examination of convective moistening of the lower
stratosphere using satellite data, Earth Space Sci., 2, 320–330,
https://doi.org/10.1002/2015EA000115, 2015. a
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, 10483–10500, https://doi.org/10.1002/2015JD023318, 2015. a
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. a, b, c, d
Wang, X., Dessler, A. E., Schoeberl, M. R., Yu, W., and Wang, T.: Impact of convectively lofted ice on the seasonal cycle of water vapor in the tropical tropopause layer, Atmos. Chem. Phys., 19, 14621–14636, https://doi.org/10.5194/acp-19-14621-2019, 2019. a, b
Waters, J. W., Froidevaux, L., Harwood, R. S., Jarnot, R. F., Pickett, H. M.,
Read, W. G., Siegel, P. H., Cofield, R. E., Filipiak, M. J., Flower, D. A.,
Holden, J. R., Lau, G. K., Livesey, N. J., Manney, G. L., Pumphrey, H. C.,
Santee, M. L., Wu, D. L., Cuddy, D. T., Lay, R. R., Loo, M. S., Perun, V. S.,
Schwartz, M. J., Stek, P. C., Thurstans, R. P., Boyles, M. A., Chandra, K. M., Chavez, M. C., Chen, G. S., Chudasama, B. V., Dodge, R., Fuller, R. A., Girard, M. A., Jiang, J. H., Jiang, Y., Knosp, B. W., Labelle, R. C., Lam, J. C., Lee, K. A., Miller, D., Oswald, J. E., Patel, N. C., Pukala, D. M., Quintero, O., Scaff, D. M., Van Snyder, W., Tope, M. C., Wagner, P. A., and Walch, M. J.: The Earth Observing System Microwave Limb Sounder (EOS MLS) on the aura satellite, IEEE T. Geosci. Remote, 44, 1075–1092, https://doi.org/10.1109/TGRS.2006.873771, 2006. a, b
World Meteorological Organization: A three-dimensional science: Second session of the commission for aerology, WMO Bull., 4, 134–138, 1957. a
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, D12302,
https://doi.org/10.1029/2010JD015416, 2011. a
Yu, W., Dessler, A., Park, M., and Jensen, E.: Code for “Influence of convection on stratospheric water vapor in the North American Monsoon region”, Atmospheric Chemistry and Physics, Zenodo, https://doi.org/10.5281/zenodo.4015534, 2020. a
Short summary
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.
The stratospheric water vapor mixing ratio over North America (NA) region is up to ~ 1 ppmv...
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