Impact of Global Warming on South Asia Low Pressure and Regional Cloud Cover

Impact of GW on South Asian Low Press & Cloud Cover.

Authors

  • Mirza Jawwad Baig Institute of Space & Planetary Astrophysics (ISPA), University Of Karachi
  • M Jawed Iqbal Department of Sciences & Humanities, National University of Computer & Emerging Sciences (FAST) Karachi
  • Syed Muhammad Fahad Riaz Department of Sciences & Humanities, National University of Computer & Emerging Sciences (FAST) Karachi
  • Syed Tanveer Iqbal Institute of Space & Planetary Astrophysics (ISPA), University Of Karachi

Keywords:

Cloud cover, Center of Action, South Asia Low pressure, Indian Ocean

Abstract

Clouds perform a very unique function in whole of the atmospherics. They respond differently to the same scenario. Analyzing more than second half of the last century synoptic climatic data, it is observed that climatic parameters are sensitive to the increasing temperature. In North Atlantic cloud cover increases with temperature while it works the other way in South Asia. By using the Center of Action (COA) technique, it is suggested that the intensity of South Asia Low pressure (spread over from north India to Saudi Arabia) has been increasing from mid 70s. It is also found that the declining trend in regional cloud cover has some links with weakening low pressure system.

References

Randall D A, Coakley D A C W, Fairall C W, Kropfli R A, and Lenschow D H, Outlook for research on subtropical marine stratiform clouds. Bulletin of American Meteorology Society, 65, 1290–1301, (1984)

A. K. Jaswal, Changes in total cloud cover over India based upon 1961-2007 surface observations. MAUSAM, 61, 4, 455-468 (October 2010)

Carole J. Hahn and Stephen G. Warren Variations in cloud cover and cloud types over the ocean from surface observations, 1954-2008. Journal of Climate (2011)

Carole J. Hahn and Stephen G. Warren A Gridded Climatology Of Clouds Over Land (1971–96) And Ocean (1954–97) From Surface Observations Worldwide. DOI: 10.3334/CDIAC/cli.ndp026e (2007)

Joel Norris Evidence for Globally Decreasing Subtropical Marine Stratocumulus since 1952. Scripps Institution of Oceanography, (August 2002)

Bakalian FM, Hameed S, Pickart R., Influence of the Icelandic low latitude on the frequency of Greenland tip jet events: implications for Irminger Sea convection. Journal Geophysics Research (Oceans) 112,C 04020.doi:10.1029/2006JC003807, (2006)

Norris, J.R., and C.B. Leovy Interannual variability in stratiform cloudiness and sea surface temperature.(1999) 7, 1915-1925. (1994)

Ryan Eastman, Stephen G. Warren and Carole J. Hahn Variations in cloud cover and cloud types over the oceanfrom surface observations, 1954-2008 Department of Atmospheric SciencesUniversity of WashingtonSeattle,WA 98195 (2011)

Dim, J. R., H. Murakami, T. Y. Nakajima, B. Nordell, A. K. Heidinger,and T. Takamura, The recent state of the climate: Driving components of cloud-type variability. Journal of Geophysical Research, 116, D11117, doi:10.1029/2010JD014559. (2011)

Ryan Eastman and Stephen G. Warren A 39-Yr Survey of Cloud Changes from Land Stations Worldwide 1971–2009: Long-Term Trends,

Relation to Aerosols, and Expansion of the Tropical Belt. Journal of Climate DOI: 10.1175/JCLI-D-12-00280.1, Vol.26 (2012)

Meredith S. Croke and S. Hameed Regional Cloud Cover Change Associated with Global limate Change: Case Studies for Three Regions

of the United States. Journal of Climate, American Meteorological Society,Vol.12 (1999)

Karl T R, et al, A new perspective on recent global warming: Asymmetric trends of daily maximum and minimum temperature. Bulletin of American Meteorology Society, 74, 1007–102, (1993)

Ellis, J. S. Cloudiness, the planetary radiation budget and climate. Ph.D. thesis, Colorado State University, Fort Collins, 129 pp. (1978)

Ramanathan, V. The role of Earth radiation budget studies in climate and general circulation research. Journal of Geophysical Research, 92, 4075-4094.(1987)

Hartmann, D. L.,and D. Doelling On the net radiative effectiveness of clouds. Journal Geophysics Research, 96D, 869-891. (1991)

Weaver, C.P., and V. Ramanathan, The link between summertime cloud radiative forcing and extratropical cyclones in the North Pacific. Journal of Climate, 9, 2093-2109. (1996)

Weare, B. C. Comparison of NCEP-NCAR cloud radiative forcing reanalyses with observations. Journal of Climate, 10, 2200-2209. (1997)

Bony, S., Lau, K.-M., Sud, Y. C. Sea surface temperature and large-scale circulation influences on tropical greenhouse effect and cloud radiative forcing. Journal of Climate., 10, 2055-2077. (1997)

Ramanathan, V., R. D. Cess, E. F. Harrison, P. Minnis, B. R. Barkstrom, E. Ahmad, and D. Hartmann Cloud radiative forcing and climate: Results from the Earth Radiation Budget Experiment. Science, 243, 57-63.(1989)

Iqbal M J, Mirza J Baig and Saba Naz Dominant impact of South Asian low heat on summer Monsoon rainfall over Central India, Arabian Journal of Geosciences, Springer, DOI 10.1007/s12517-011-0458-5(2011)

Barron E.J & G.T. More Climate model Application in Palaeo-environmental Analysis, Short Course Notes 33. SEPM (Society for Sedimantory Geology), Tulsa, UK (1994)

Wyant, M.C., C.S. Bretherton, H.A. Rand, and D.E. Stevens Numerical simulations and a conceptual model of the stratocumulus to trade cumulus transition. Journal of Atmospheric Sciences 54, 169-192. (1997)

Clement, A.C., R. Burgman, and J.R. Norris Observational and model evidence for positive low-level cloud feedback. Science, 325, 460-464. doi: 10.1126/science.1171255. (2009)

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Published

2018-09-13

How to Cite

Baig, M. J., Iqbal, M. J. ., Riaz, S. M. F., & Iqbal, S. T. . (2018). Impact of Global Warming on South Asia Low Pressure and Regional Cloud Cover: Impact of GW on South Asian Low Press & Cloud Cover. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences, 55(3), 9–18. Retrieved from http://ppaspk.org/index.php/PPAS-B/article/view/159

Issue

Vol. 55 No. 3 (2018)

Section

Research Articles

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