Preprints
https://doi.org/10.5194/acpd-10-17009-2010
https://doi.org/10.5194/acpd-10-17009-2010

  09 Jul 2010

09 Jul 2010

Review status: this preprint was under review for the journal ACP but the revision was not accepted.

Suppression of warm rain by aerosols in rain-shadow areas of India

M. Konwar1, R. S. Maheskumar1, J. R. Kulkarni1, E. Freud2, B. N. Goswami1, and D. Rosenfeld2 M. Konwar et al.
  • 1Indian Institute of Tropical Meteorology, Pune, 411 008, India
  • 2The Hebrew University of Jerusalem, Jerusalem, 91904, Israel

Abstract. Aircraft observations of clouds and aerosols were conducted during the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) executed by the Indian Institute of Tropical Meteorology over the Indian subcontinent during the period of May–September 2009. Existence of aerosol layer with large concentrations of cloud drop condensation nuclei extended up to heights of 4 to 5 km was observed over the rain shadow areas to the east of the Western Ghats over central India. The thick aerosol layers were observed to suppress the formation of warm rain in convective clouds up to heights of about 7 km, where mixed phase precipitation formed. This prevented clouds that did not exceed this height from precipitating significantly. This might invigorate the very deep clouds on expense of the smaller clouds. The aerosol radiative effects are suspected to decrease the surface heating and hence the available energy for propelling the convection. The net effect of the aerosols on the rainfall amounts is unknown due to the complexity of the effect, but it is suspected to be detrimental in an area where the rainfall is critical to the livelihood of the inhabitants. This requires continuation of this research.

M. Konwar et al.

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

M. Konwar et al.

M. Konwar et al.

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