ON THE PLACEMENT OF THE TROPOPAUSE IN THE ANTARCTIC

Several investigations have led to the conclusion that there is a definite difference between the arctic and the antarctic tropopause. Using the standard definition of tropopause the average height and temperature values for the arctic tropopause for winter are 320 mb and -52 C and for summer they a...

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Bibliographic Details
Main Author: OVERBY,RONALD
Other Authors: AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
Format: Text
Language:English
Published: 1962
Subjects:
*ATMOSPHERES
*WEATHER FORECASTING
CLIMATE
MEASUREMENT
METEOROLOGY
POLAR REGIONS
STRATOSPHERE
TEMPERATURE
Antarctic
Arctic
The Antarctic
Antarc*
Online Access:http://www.dtic.mil/docs/citations/AD0294794
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0294794
Description
Summary:Several investigations have led to the conclusion that there is a definite difference between the arctic and the antarctic tropopause. Using the standard definition of tropopause the average height and temperature values for the arctic tropopause for winter are 320 mb and -52 C and for summer they are 260 mb and -56 C. The average values for the antarctic tropopause are reversed, with higher and colder values in winter, 230 mb and -70 C, and lower and warmer values in summer, 300 mb and -50 C. Because of the low stratospheric temperatures in the winter the antarctic tropopause sometimes completely disappears. It was thought that by applying a new definition to determine the placement of the tropopause a reversal of the seasonal fluctuations of the antarctic tropopause might be indicated. This was not proven for the 14 month period used for this study, but the mean height of the tropopause was lowered, the greatest change taking place during the winter season. The number of cases which indicated no tropopause under the conventional definition was reduced when the new definition was applied. (Author)

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