National Aeronautics and Space Administration

Living With A Star

Targeted Research and Technology

Pacific centers of action: linkage between the solar cycle and regional climate variations

ROSES ID: NRA-02-OSS-01      Selection Year: 2003      

Program Element: Independent Investigation: LWS

Principal Investigator: Sultan Hameed

Affiliation(s): State Univ of New York Stony Brook

Project Member(s):
Geller, Marvin A COI State Univ of New York Stony Brook
Zhang, Minghua COI State Univ of New York Stony Brook


Recent work carried out at Stony Brook University has presented evidence that the atmospheric Centers of Action in the North Pacific, the Aleutian Low and the Hawaiian High pressure systems shift their geographical positions significantly between solar minimum and maximum conditions, and also, that such changes in the Centers of Action are correlated significantly with the interannual variations of winter temperature and precipitation in several regions in North America and Asia. The goal of this project is to further understand this sun-climate link and to study the hypothesis that regional climate changes caused by the Pacific Centers of Action act to amplify the relatively small solar forcing to produce large perturbations in regions of North America and Asia. We propose to use an integrated approach of data analysis from satellites, NCEP reanalyses and GCM simulations with solar cycle forcing. The specific tasks detailed in the proposal are: i) integrated analysis of satellite measurements, operational reanalysis products, and conventional meteorological measurements to study the temporal and spatial structures of the sun-Centers of Action-regional climate relationship; ii) hypothesis study of the mechanism of the sun-climate relationship through amplification feedback processes of the atmospheric action centers.


Performance YearReferenceInvestigation TypeActions
1Hameed, Sultan   SUNY - Pacific centers of action: linkage ...
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1Hameed, Sultan; Piontkovski, Sergey; (2004), The dominant...
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1Hameed, Sultan; Lee, Jae N.; (2005), A mechanism for sun...
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1Kolker, Alexander S.; Hameed, Sultan; (2007), Meteorolog...
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Performance YearReferenceActions
1Hameed, S.; Lee, J. N.; (2003), Displacements of the Ale...

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