期刊
GEOPHYSICAL RESEARCH LETTERS
卷 42, 期 24, 页码 10876-10884出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2015GL066416
关键词
clouds and aerosols; precipitation; Earth system modeling; climate change and variability; aerosols and particles
资金
- U.S. National Science Foundation [AGS-1339264]
- National Research Foundation Singapore through Singapore-MIT Alliance for Research and Technology
- U.S. DOE, Office of Science [DE-FG02-94ER61937]
- U.S. Environmental Protection Agency [XA-83600001-1]
- NOAA's Earth System Research Laboratory
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [1339264] Funding Source: National Science Foundation
The climate response of precipitation to the effects of anthropogenic aerosols is a critical while not yet fully understood aspect in climate science. Results of selected models that participated the Coupled Model Intercomparison Project Phase 5 and the data from the Twentieth Century Reanalysis Project suggest that, throughout the tropics and also in the extratropical Northern Hemisphere, aerosols have largely dominated the distribution of precipitation changes in reference to the preindustrial era in the second half of the last century. Aerosol-induced cooling has offset some of the warming caused by the greenhouse gases from the tropics to the Arctic and thus formed the gradients of surface temperature anomaly that enable the revealed precipitation change patterns to occur. Improved representation of aerosol-cloud interaction has been demonstrated as the key factor for models to reproduce consistent distributions of past precipitation change with the reanalysis data.
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