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Vertical Structure and Interannual Variability of Tropical Zonal Winds
Publisher: American Meteorological Society
Abstract: Geographical and seasonal variations of the variance and vertical structure of interannual anomalies of seasonally averaged zonal winds are calculated from rawinsonde records at tropical stations between 80°E and 140°W, ...
Low-Frequency Ocean-Atmosphere Variability across the Tropical Western Pacific
Publisher: American Meteorological Society
Abstract: Oceanic and atmospheric data from the tropical western Pacific are analyzed to describe decadal-scale trends during the last 20 years, and these low-frequency trends are compared with shorter-term Southern Oscillation-related ...
The Annual and Semiannual Cycles of the Tropical Wind Field
Publisher: American Meteorological Society
Abstract: The annual and semiannual harmonics of the wind field within 25° of the equator at six tropospheric pressure levels are described, based on data from a network of rawinsonde stations. The annual cycle in the zonal wind ...
Covariability of Spring Snowpack and Summer Rainfall across the Southwest United States
Publisher: American Meteorological Society
Abstract: Interannual fluctuations of observed summer rainfall across the monsoon region of the southwestern United States are analyzed to ascertain their spatial coherence and to test the hypothesis that antecedent spring snowpack ...
An Index of Interannual Precipitation Variability in the Core of the North American Monsoon Region
Publisher: American Meteorological Society
Abstract: Seasonal precipitation anomalies associated with the continental North American monsoon system are characterized using a land-based dataset derived from in situ observations across the southwestern United States and ...
Analogs in the Wintertime 500 mb Height Field
Publisher: American Meteorological Society
Abstract: A 15-winter sample of daily gridded values of Northern Hemisphere 500 mb heights is examined for the existence of recurrent flow patterns (?analogs?). The analog search is repeated several times after degrees of freedom ...
Seasonal Variations in the Spatial Structure of Intraseasonal Tropical Wind Fluctuations
Publisher: American Meteorological Society
Abstract: Seasonal and geographical variations in tropical intraseasonal wind variance are described using bandpass filtered 850 and 150 mb wind time series derived from rawinsonde observations. Three bandpass filters, with central ...
Seasonal Variations of the 40–50-Day Oscillation in Atmospheric Angular Momentum
Publisher: American Meteorological Society
Abstract: Seasonally varying spectral and cross-spectral calculations are carried out on multiyear time series of vertically and zonally averaged daily zonal wind fields to describe the seasonal cycle of the 40?50-day oscillation ...
Interannual Variability of Water Demand and Summer Climate in Albuquerque, New Mexico
Publisher: American Meteorological Society
Abstract: The effects of interannual climate variability on water demand in Albuquerque, New Mexico, are assessed. This city provides an ideal setting for examining the effects of climate on urban water demand, because at present ...
Interannual Variability of Wintertime Snow Cover across the Northern Hemisphere
Publisher: American Meteorological Society
Abstract: Digitized maps of Northern Hemisphere snow cover derived from visible satellite imagery are examined to assess the interannual variability of snow cover in winter months for years 1972?90. The secular trend of winter snow ...