Physics
Scientific paper
Feb 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3403703k&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 3, CiteID L03703
Physics
38
Atmospheric Processes: Regional Modeling, Global Change: Regional Climate Change, Global Change: Land Cover Change, Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513)
Scientific paper
Regional detection of a greenhouse warming signal relies on extensive, long-term measurements of temperature. The potentially confounding impact of land-cover and land-use change on trends in temperature records has mostly focused on the influence of urban heat islands. Here we use a regional climate model to show that a regional irrigation cooling effect (ICE) exists, opposite in sign to urban heat island effects. The magnitude of the ICE has strong seasonal variability, causing large dry-season decreases in monthly mean and maximum temperatures, but little change in rainy-season temperatures. Our model produced a negligible effect on monthly minimum temperature. In California, the modeled regional ICE is of similar magnitude, but opposite sign, to predictions for future regional warming from greenhouse gases. Given our results for California and the global importance of irrigated agriculture, past expansion of irrigated land has likely affected observations of surface temperature, potentially masking the full warming signal caused by greenhouse gas increases.
Kueppers Lara M.
Sloan Lisa Cirbus
Snyder Mark A.
No associations
LandOfFree
Irrigation cooling effect: Regional climate forcing by land-use change does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Irrigation cooling effect: Regional climate forcing by land-use change, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Irrigation cooling effect: Regional climate forcing by land-use change will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-739539