Impacts of the agricultural Green Revolution-induced land use changes on air temperatures in India

Shouraseni S Roy, Rezaul Mahmood, Dev Niyogi, Ming Lei, Stuart A. Foster, Kenneth G. Hubbard, Ellen Douglas, Roger Pielke

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

India has one of the most intensive and spatially extensive irrigation systems in the world developed during the 1960s under the agricultural Green Revolution (GR). Irrigated landscapes can alter the regional surface energy balance and its associated temperature, humidity, and climate features. The main objective of this study is to determine the impacts of increased irrigation on long-term temperature trends. An analysis of the monthly climatological surface data sets at the regional level over India showed that agriculture and irrigation can substantially reduce the air temperature over different regions during the growing season. The processes associated with agriculture and irrigation-induced feedback are further diagnosed using a column radiation-boundary layer model coupled to a detailed land surface/ hydrology scheme, and 3-D simulations using a Regional Atmospheric Modeling System. Both the modeling and observational analysis provide evidence that during the growing season, irrigation and agricultural activity are significantly modulating the surface temperatures over the Indian subcontinent. Therefore irrigation and agricultural impacts, along with land use change, and aerosol feedbacks need to be considered in regional and global modeling studies for climate change assessments.

Original languageEnglish (US)
Article numberD21108
JournalJournal of Geophysical Research C: Oceans
Volume112
Issue number21
DOIs
StatePublished - Nov 16 2007

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green revolution
irrigation
land use
India
Irrigation
Land use
land use change
air temperature
air
Air
agriculture
growing season
Temperature
Agriculture
temperature
atmospheric modeling
Feedback
hydrology
irrigation system
surface energy

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Atmospheric Science
  • Astronomy and Astrophysics
  • Oceanography

Cite this

Impacts of the agricultural Green Revolution-induced land use changes on air temperatures in India. / Roy, Shouraseni S; Mahmood, Rezaul; Niyogi, Dev; Lei, Ming; Foster, Stuart A.; Hubbard, Kenneth G.; Douglas, Ellen; Pielke, Roger.

In: Journal of Geophysical Research C: Oceans, Vol. 112, No. 21, D21108, 16.11.2007.

Research output: Contribution to journalArticle

Roy, Shouraseni S ; Mahmood, Rezaul ; Niyogi, Dev ; Lei, Ming ; Foster, Stuart A. ; Hubbard, Kenneth G. ; Douglas, Ellen ; Pielke, Roger. / Impacts of the agricultural Green Revolution-induced land use changes on air temperatures in India. In: Journal of Geophysical Research C: Oceans. 2007 ; Vol. 112, No. 21.
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