Search
Now showing items 1-10 of 15
Analysis Verification Experiments with a Statistical interpolation System
Publisher: American Meteorological Society
Abstract: An analysis performance verification (APV) system was developed using the 1989 version of the National Meteorological Center global data assimilation system (GDAS). It allows comparison of the GDAS analysis to observations ...
Nonstationary Impacts of the Southern Annular Mode on Southern Hemisphere Climate
Publisher: American Meteorological Society
Abstract: The temporal stability of the southern annular mode (SAM) impacts on Southern Hemisphere climate during austral spring is analyzed. Results show changes in the typical hemispheric circulation pattern associated with SAM, ...
Characteristics of the Southern Hemisphere Winter Storm Track with Filtered and Unfiltered Data
Publisher: American Meteorological Society
Abstract: The structure and evolution of the fluctuations in synoptic scales in the Southern Hemisphere (SH) during winter are discussed using six years of European Centre for Medium-Range Weather Forecasts analyses. It is shown ...
A Diagnostic Study of Cold-Air Outbreaks over South America
Publisher: American Meteorological Society
Abstract: Midlatitude disturbances such as intense cold fronts and cutoff lows are a very important cause of severe-weather events over the southern part of South America, particularly during the austral winter months. Behind cold ...
Cold Season Synoptic-Scale Waves over Subtropical South America
Publisher: American Meteorological Society
Abstract: The most active winter synoptic-scale wave patterns over South America are identified using an extended empirical orthogonal function (EEOF) technique and are physically diagnosed using composite methods. Results show that ...
The Nature of a Heat Wave in Eastern Argentina Occurring during SALLJEX
Publisher: American Meteorological Society
Abstract: This note describes the physical processes associated with the occurrence of a heat wave over central Argentina during the austral summer of 2002/03, during which the South American Low-Level Jet Experiment (SALLJEX) was ...
Differences in El Niño Response over the Southern Hemisphere
Publisher: American Meteorological Society
Abstract: Southern Hemisphere (SH) circulation conditions during austral springs of ENSO events are examined. Based on previous knowledge that SST variations over the subtropical south-central Pacific (SSCP) region are linked to ...
Synoptic-Scale Variability and Its Relationship with Total Ozone and Antarctic Vortex Displacements
Publisher: American Meteorological Society
Abstract: The main synoptic-scale circulation anomaly pattern over extratropical South America during the austral spring (September?November) is identified by means of rotated extended empirical orthogonal function techniques, applied ...
Two Time Scales for The Price Of One (Almost)
Publisher: American Meteorological Society
Subseasonal Variations of Rainfall in South America in the Vicinity of the Low-Level Jet East of the Andes and Comparison to Those in the South Atlantic Convergence Zone
Publisher: American Meteorological Society
Abstract: Regional and large-scale circulation anomalies associated with variations in rainfall downstream of the South American low-level jet are identified and compared to those in the South Atlantic convergence zone (SACZ). ...