Influence of smoke aerosols on low-level clouds over the Indian region during winter

The effect of smoke aerosols on the low-level clouds over the Indian landmass during the winter season is examined using 15 years (2005–2019) of long-term multi-satellite observations and reanalyses (MERRA-2 and ERA-5) datasets. Climatologically higher values of aerosol optical depth (AOD) (> 0.6...

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Bibliographic Details
Published in:Atmospheric research 2022-11, Vol.278, p.106358, Article 106358
Main Authors: Sarkar, Ankan, Panda, Jagabandhu, Kant, Sunny, Mukherjee, Asmita
Format: Article
Language:English
Subjects:
Aerosol
Biomass burning
Low-level cloud
Smoke
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Summary:The effect of smoke aerosols on the low-level clouds over the Indian landmass during the winter season is examined using 15 years (2005–2019) of long-term multi-satellite observations and reanalyses (MERRA-2 and ERA-5) datasets. Climatologically higher values of aerosol optical depth (AOD) (> 0.6), Angstrom exponent (> 1.5), UV-aerosol index (> 0.7), and black carbon and organic carbon (BC + OC) extinction aerosol optical thickness (EXTAOT) (> 0.18) are found over the Indo-Gangetic Plain (IGP) compared to the rest of India indicating the dominance of smoke aerosols over the region. However, considerable enhancements in AOD (~ 60%) and (BC + OC) EXTAOT (20–40%) are observed over some parts of eastern India (particularly Odisha and Chhattisgarh) and central-south India compared to IGP (< 10% and 
ISSN:0169-8095
1873-2895
DOI:10.1016/j.atmosres.2022.106358