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Origins of Convective Variability over Equatorial Southern Africa during Austral Summer
Publisher: American Meteorological Society
Abstract: Analysis of NOAA/NESS outgoing longwave radiation (OLR) over the greater Africa region reveals a large area of low OLR (5°?20°S, 20°E?40°E) during three austral summers (November through February; 1982/83, 1983/84 and ...
Empirical Orthogonal Function Analysis of Hawaiian Rainfall
Publisher: American Meteorological Society
Abstract: Empirical orthogonal function analysis was applied to monthly mean rainfall data at 63 stations in Hawaii encompassing a 37-year period. Major rainfall patterns in order to importance (E1?E3) proved to be trade wind, ...
Spatial and Temporal Variability of Monthly Precipitation in Texas
Publisher: American Meteorological Society
Abstract: Monthly precipitation at 46 stations located throughout the state of Texas was examined over a continuous 62-year period from 1923 to 1984. Precipitation data were subjected to spectral, empirical orthogonal function (EOF) ...
Planetary-Scale Aspects of Outgoing Longwave Radiation and vorticity over the Global Tropics during Winter
Publisher: American Meteorological Society
Abstract: Fourier analysis was applied to outgoing longwave radiation (OLR) and 200 mb vorticity (VOR) during winter 1974?75, over the global tropics from 20°N to 20°S. Significant OLR and VOR zonal variance (33%) is contained in ...
Additional Evidence of an Upper Tropospheric Zonal/Eddy Relationship during Winter
Publisher: American Meteorological Society
Abstract: A zonal wind oscillation with a period of about 15?35 days is isolated over the middle latitudes of the Northern Hemisphere during winter. A systematic relationship between the zonal winds and wind departures from zonal ...
U.S. Tropical Cyclone Landfall Variability: 1950–2002
Publisher: American Meteorological Society
Abstract: Interannual variations in U.S. tropical storm and hurricane landfalls are examined over the interval 1950? 2002. The 10 highest and 9 lowest U.S. storm and hurricane landfall years are highlighted. U.S. landfalls are 6 ...
Zonal-Wind Oscillations over the Western Hemisphere during Winter: Further Evidence of a Zonal-Eddy Relationship
Publisher: American Meteorological Society
Abstract: The European Centre for Medium-Range Weather Forecasts (ECMWF) 500-mb height analyses and 7-day forecasts are examined during ten winters (1981?90) for oscillations of geostrophic zonal wind over the western hemisphere. A ...
NGM Performance during Cold-Air Outbreaks and Periods of Return Flow over the Gulf of Mexico with Emphasis on Moisture-Field Evolution
Publisher: American Meteorological Society
Abstract: The National Meteorological Center's Nested Grid Model (NGM) analyses and 24?48-h forecasts of cold-air outbreaks and their associated return flows are examined from January through March 1988 coincident with the Gulf of ...