Advances in Geosciences www.adv-geosci.net 1680-7340 1680-7359 12 Mediterranean storms and extreme events in an era of climate change 2007 10.5194/adgeo-12-95-2007 http://www.adv-geosci.net/12/95/2007/ http://www.adv-geosci.net/12/95/2007/adgeo-12-95-2007.html http://www.adv-geosci.net/12/95/2007/adgeo-12-95-2007.pdf 95 100 2007-08-13 Using MSG to monitor the evolution of severe convective storms over East Mediterranean Sea and Israel, and its response to aerosol loading I. M. Lensky lenskyi@mail.biu.ac.il S. Shiff Department of Geography and Environment, Bar-Ilan University, Ramt-Gan, Israel Convective storms over East Mediterranean sea and Israel were tracked by METEOSAT Second Generation (MSG). The MSG data was used to retrieve time series of the precipitation formation processes in the clouds, the temperature of onset of precipitation, and an indication to aerosol loading over the sea. Strong correlation was found between the aerosol loading and the depth above cloud base required for the initialization of effective precipitation processes (indicated by the effective radius = 15 µm threshold). It seems from the data presented here that the clouds' response to the aerosol loading is very short. Freud, E., Rosenfeld, D., Andreae, M O., Costa, A A., and Artaxo, P.: Robust relations between CCN and the vertical evolution of cloud drop size distribution in deep convective clouds, Atmos. Chem. Phys. Discuss., 5, 10 155–10 195, 2005. Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang,J., Leetmaa, A., Reynolds, R., Jenne, R., and Joseph, D.: The NCEP/NCAR 40-Year Reanalysis Project, B. Am. Meteor. Soc., 77, 437–471, 1996. Kistler, R., Kalnay, E., Collins, W., Saha, S., White, G., Woollen, J., Chelliah, M., Ebisuzaki, W., Kanamitsu, M., Kousky, V., van den Dool, H., Jenne, R., and Fiorino, M.: The NCEP/NCAR 50-year reanalysis: Monthly means CD-ROM and documentation, B. Am. Meteor. Soc., 82, 247–267, 2001. Lensky, I. M. and Rosenfeld, D.: Estimation of precipitation area and rain intensity based on the microphysical properties retrieved from NOAA AVHRR data, J. Appl. Meteorol., 36, 234–242, 1997. Lensky, I. M. and Rosenfeld, D.: The time-space exchangeability of satellite retrieved relations between cloud top temperature and particle effective radius, Atmos. Chem. Phys., 6, 2887–2894, 2006. Lensky, I. M. and Drori, R.: A Satellite Based Parameter to Monitor the Aerosol Impact on Convective Clouds, J. Appl. Meteorol. Clim., 45, 660–666, 2007. Rosenfeld, D. and Lensky, I. M.: Satellite-based insights into precipitation formation processes in continental and maritime convective clouds, B. Am. Meteor. Soc., 79, 2457–2476, 1998. Rosenfeld, D.: TRMM observed first direct evidence of smoke from forest fires inhibiting rainfall, Geophys. Res. Lett., 26, 3105–3108, 1999. Rosenfeld, D.: Suppression of rain and snow by urban and industrial air pollution, Science, 287, 1793–1796, 2000. Rosenfeld, D., Rudich, Y., and Lahav, R.: Desert dust suppressing: A possible desertification feedback loop, Proc. Natl. Acad. Sci. USA, 98, 5975–5980, 2001. Rosenfeld, D., Lahav, R., Khain, A. P., and Pinsky, M.: The role of sea-spray in cleansing air pollution over ocean via cloud processes, Science, 297, 1667–1670, 2002. Rosenfeld, D., Cattani, E., Melani, S., and Levizzani, V.: Considerations on daylight operation of 1.6 $\mu $m vs 3.7 $\mu $m channel on NOAA and METOP Satellites, B. Am. Meteor. Soc., 85, 873–881, 2004. Rosenfeld, D. and Woodley, W. L.: Closing the 50-year circle: From cloud seeding to space and back to climate change through precipitation physics, Chapter 6, in: Cloud Systems, Hurricanes, and the Tropical Rainfall Measuring Mission (TRMM), edited by: Wei-Kuo Tao and Adler, R., Meteorological Monographs 51, AMS, 234~pp., 59–80, 2003. Rosenfeld, D. and Woodley, W. L.: Pollution and Clouds. Physics World, Institute of Physics Publishing LTD, Dirac House, Temple Back, Bristol BS1 6BE, UK, February 2001, 33–37, 2001. Rosenfeld D., Lensky, I. M., Peterson, J., and Gingis, A.: Potential impacts of air pollution aerosols on precipitation in Australia, Clean Air and Environmental Quality, 41, 43–49, 2006. Ramanathan, V., Crutzen, P. J., Kiehl, J. T., and Rosenfeld, D.: Aerosols, Climate and the Hydrological Cycle, Science, 294, 2119–2124, 2001. Rudich, Y., Rosenfeld, D., and Khersonsky, O.: Treating clouds with a grain of salt, Geophys. Res. Lett., 29(22), 2060, doi:10.1029/2002GL016055, 2002. Rudich, Y., Sagi, A., and Rosenfeld, D.: Influence of the Kuwait oil fires plume (1991) on the microphysical development of clouds, J. Geophys. Res., 108(D15), 4478, doi:10.1029/2003JD003472, 2003. Schmetz, J., Pili, P., Tjemkes, S., Just, D., Kerkmann, J., Rota, S., and Ratier, A.: An Introduction to Meteosat Second Generation (MSG), B. Am. Meteor. Soc., 83, 977–992, 2002. Tupper, A., Oswalt, J. S., and Rosenfeld, D.: Satellite and radar analysis of the `volcanic' thunderstorms at Mt Pinatubo, Philippines, 1991, J. Geophys. Res., 110, D09204, doi:10.1029/2004JD005499, 2004. Williams, E., Rosenfeld, D., and Madden, M.: Contrasting convective regimes over the Amazon: Implications for cloud electrification, J. Geophys. Res., 107(D20), 8082, doi:10.1029/2001JD000380, 2002. Woodley, W. L., Rosenfeld, D., and Strautins, A.: Identification of a seeding signature in Texas using multi-spectral satellite imagery, J. Wea. Mod., 32, 37–52, 2000.