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THE INDEX CYCLE: A CROSS-SPECTRAL ANALYSIS OF ZONAL INDEX DATA
Publisher: American Meteorological Society
Abstract: In order to examine quantitatively the evidence for an index cycle, 21 years of daily 700-mb. zonal index data for the western longitudes of the Northern Hemisphere were subjected to cross-spectral analyses. The annual ...
AN APPLICATION OF RANK-ORDER STATISTICS TO THE JOINT SPATIAL AND TEMPORAL VARIATIONS OF METEOROLOGICAL ELEMENTS
Publisher: American Meteorological Society
Abstract: Principal components or empirical orthogonal functions are virtually the sole statistical tool used to date for investigations of space-time variability of meteorological elements. Maximum statistical efficiency and possible ...
SOME ASPECTS OF VARIANCE SPECTRA OF SYNOPTIC SCALE TROPOSPHERIC WIND COMPONENTS IN MIDLATITUDES AND IN THE TROPICS
Publisher: American Meteorological Society
Abstract: The primary concern of this paper is an examination of the utility of spectral techniques in detecting wave modes of the large-scale tropospheric circulation. Sample time- and space-spectra of meridional winds in middle ...
Midwinter Stratospheric Warmings in the Southern Hemisphere General Remarks and a Case Study
Publisher: American Meteorological Society
Abstract: Anomalously high stratospheric temperatures were measured by rocket sounding techniques over McMurdo, Antarctica, in midwinter 1963. Because of the importance of these observations in determining whether the Southern ...
Objective Analysis in the Tropics: A Proposed Scheme
Publisher: American Meteorological Society
Abstract: The tropical wind field presents some unique problems to an assimilation scheme designed for extratropical latitudes. Foremost among these is the relative increased importance of the divergent component of the upper and ...
Antarctic 150 mb Pressure Maps from TWERLF, and Radiosondes (November–1975March 1976)
Publisher: American Meteorological Society
Abstract: Daily 150 mb maps south of 45°S were prepared for the period 16 November 1975?16 March 1976, using the extensive coverage of the TWERLE balloons in that area, in addition to the sparse radiosonde network. A sample of one ...
An Investigation of Omega Windfinding Accuracy
Publisher: American Meteorological Society
Abstract: The major sources of error in Omega-derived wind estimates are examined and illustrated. Sample dropwindsondes and local Omega signals are used to illustrate the effects of several types of phase propagation anomalies. A ...
A Study of Atmospheric Energetics During the January–February 1963 Stratospheric Warming
Publisher: American Meteorological Society
Abstract: The spectral energy equations for zonal and eddy kinetic and available potential energies are used to investigate the energetics of the lowest 30 km of the atmosphere during the months of January and February 1963. A major ...