The relationship of the North American Monsoon to tropical and North Pacific sea surface temperatures as revealed by observational analyses
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The North American Monsoon is a seasonal shift of upper and low level pressure and wind patterns which brings summertime moisture into the Southwest United States and ends the late spring wet period in the Great Plains. The climatology and interannual variability of the North American Monsoon are examined using the NCEP/NCAR Reanalysis (1948-98). The diurnal and seasonal evolution of 500-mb geopotential height, integrated moisture flux, and integrated moisture flux convergence are constructed using a five-day running mean for the months May through September. All of the years are used to calculate ...