P. C. S. Devara

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BACKGROUND There is an urgent need for an improved understanding of the sources, distributions and properties of atmospheric aerosol in order to control the atmospheric pollution over northeastern Himalayas where rising anthropogenic interferences from rapid urbanization and development is becoming an increasing concern. METHODOLOGY/PRINCIPAL FINDINGS An(More)
Vertical profiles of black carbon (BC) aerosol were determined from aircraft measurements under the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) program conducted by the Indian Institute of Tropical Meteorology, India during 2009 over Bangalore and Hyderabad in south India. BC mass loadings decreased approximately(More)
BACKGROUND The loading of atmospheric particulate matter (aerosol) in the eastern Himalaya is mainly regulated by the locally generated anthropogenic aerosols from the biomass burning and by the aerosols transported from the distance sources. These different types of aerosol loading not only affect the aerosol chemistry but also produce consequent signature(More)
This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract Knowledge of light scattering and absorption properties of atmospheric aerosols is of vital importance in evaluating their types, sources and radiative forcing. This is of(More)
Multi-channel sun photometer observations of precipitable water content (PWC) in the near-infrared band over a tropical Indian station, Pune, during the period May 1998-May 2006 have been used to investigate temporal and seasonal variations. Precipitable water estimated from surface meteorological parameters (temperature and relative humidity) and that(More)
10 Light scattering and absorption properties of atmospheric aerosols are of vital importance in 11 evaluating their types, sources and radiative forcing. This is of particular interest over the 12 Gangetic-Himalayan (GH) region due to uplift of aerosol from the plains to the Himalayan range 13 causing serious effects on atmospheric heating, glaciology and(More)
A methodology has been developed for modeling and mapping various aerosol parameters using the IRS-P4 Ocean Color Monitoring [OCM] multi-spectral data having wide swath of 1420 km and high (360 m) spatial resolution and high (2 days) temporal coverage. OCM images in 8 spectral bands at radiometric resolution of 12 bits. In the present work, a methodology to(More)
Atmospheric Chemistry and Physics Discussions This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract Ship-borne Aerosol Optical Depth (AOD) measurements obtained by a sunphotometer have been used to retrieve theÅngström wavelength(More)
This paper presents the results of the lidar experiments that have been performed during January 1989 through August 1990 to study the aerosol vertical distributions in the nocturnal atmosphere and their comparison with near-simultaneous aerological soundings for environmental monitoring. During the study period, the aerosol distributions showed significant(More)