Potential impacts of aerosol–land–atmosphere interactions on the Indian monsoonal rainfall characteristics |
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| Authors: | Dev Niyogi Hsin-I Chang Fei Chen Lianhong Gu Anil Kumar Surabi Menon Roger A Pielke Sr |
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| Institution: | (1) Purdue University, 915 W State St., West Lafayette, IN 47906, USA;(2) National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305-560, USA;(3) Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;(4) Lawrence Berkeley National Laboratory, Berkeley, CA, USA;(5) University of Colorado at Boulder, Boulder, CO 80309-0430, USA |
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| Abstract: | Aerosols can affect the cloud-radiation feedback and the precipitation over the Indian monsoon region. In this paper, we propose
that another pathway by which aerosols can modulate the multi-scale aspect of Indian monsoons is by altering the land–atmosphere
interactions. The nonlinear feedbacks due to aerosol/diffuse radiation on coupled interactions over the Indian monsoon region
are studied by: (1) reviewing recent field measurements and modeling studies, (2) analyzing the MODIS and AERONET aerosol
optical depth datasets, and (3) diagnosing the results from sensitivity experiments using a mesoscale modeling system. The
results of this study suggest that the large magnitude of aerosol loading and its impact on land–atmosphere interactions can
significantly influence the mesoscale monsoonal characteristics in the Indo-Ganges Basin. |
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| Keywords: | Asian monsoon Aerosols Land use Land-surface feedback Precipitation Radiation feedback |
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