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Title: Midlatitude-tropics interactions as seen from MST radar observations at Gadanki (13.5°N, 79.2°E) during winter
Authors: Annes, V H
Sijikumar, S
Mohankumar, K
Issue Date: Aug-2000
Publisher: NISCAIR-CSIR, India
Abstract: The MST radar observations at Gadanki, Tirupati (13.5°N, 79.2°E), during 1995-96 winter showed an anomalous wind pattern in the troposphere and lower stratosphere. During the season the mean zonal wind between 3.6 km and 21 km region was westerly and the vertical velocity was downward. The zonal wind exhibited a change from the normal pattern of winter westerlies into easterlies in the troposphere and lower stratosphere during January 1996. The radar data combined with radiosonde and National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis data showed that the anomalous features are associated with the north-south movement of anticyclones during the passage of western disturbances over north-west India. Such process of a midlatitude-tropics interaction is further evidenced as intrusion of the upper air trough from the midlatitudes into the tropics.
Page(s): 192-198
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.29(4) [August 2000]

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