Potential impacts of aerosol-land-atmosphere interactions on the Indian monsoonal rainfall characteristics

Dev Niyogi, Hsin I. Chang, Fei Chen, Lianhong Gu, Anil Kumar, Surabi Menon, Roger A. Pielke

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)345-359
Number of pages15
JournalNatural Hazards
Volume42
Issue number2
DOIs
StatePublished - Aug 2007
Externally publishedYes

Keywords

  • Aerosols
  • Asian monsoon
  • Land use
  • Land-surface feedback
  • Precipitation
  • Radiation feedback

ASJC Scopus subject areas

  • Water Science and Technology
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)

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