Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation
Earlier studies on the influence of solar activity variations within a 11-year solar cycle on temperature changes in the middle atmosphere revealed that while the temperature in the mesosphere showed strong responses to changes in solar activity, the stratosphere remained almost unaffected. Recent s...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19900018852 2023-05-15T13:35:10+02:00 Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation Mohanakumar, K. Unclassified, Unlimited, Publicly available Sep 1, 1989 application/pdf http://hdl.handle.net/2060/19900018852 unknown Document ID: 19900018852 Accession ID: 90N28168 http://hdl.handle.net/2060/19900018852 No Copyright CASI GEOPHYSICS International Council of Scientific Unions, Middle Atmosphere Program. Handbook for MAP, Volume 29. Part 1: Extended Abstracts, International Symposium on Solar Activity Forcing of the Middle Atmosphere. Part 2: MASH Workshop, Williamsburg, 1986; p 39-42 1989 ftnasantrs 2015-03-15T05:36:27Z Earlier studies on the influence of solar activity variations within a 11-year solar cycle on temperature changes in the middle atmosphere revealed that while the temperature in the mesosphere showed strong responses to changes in solar activity, the stratosphere remained almost unaffected. Recent studies showed that when the temperature data were grouped into east or west phase of the equatorial quasi-biennial oscillation (QBO) in stratospheric zonal wind, significant relationships of temperature in the lower stratosphere and troposphere could be obtained with 10.7 cm solar radio flux. Positive correlations in high latitude regions and negative correlations in mid-latitude and tropical regions were obtained during winter when the QBO was in its west phase. During the east phase, converse relationships were indicated. These results inspired this study on the response of solar activity in 11-year cycle on the temperature structure of the middle atmosphere in the two phases of equatorial QBO of zonal wind at 50 mb, in tropics, mid-latitude and antarctic regions. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic |
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GEOPHYSICS |
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GEOPHYSICS Mohanakumar, K. Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
topic_facet |
GEOPHYSICS |
description |
Earlier studies on the influence of solar activity variations within a 11-year solar cycle on temperature changes in the middle atmosphere revealed that while the temperature in the mesosphere showed strong responses to changes in solar activity, the stratosphere remained almost unaffected. Recent studies showed that when the temperature data were grouped into east or west phase of the equatorial quasi-biennial oscillation (QBO) in stratospheric zonal wind, significant relationships of temperature in the lower stratosphere and troposphere could be obtained with 10.7 cm solar radio flux. Positive correlations in high latitude regions and negative correlations in mid-latitude and tropical regions were obtained during winter when the QBO was in its west phase. During the east phase, converse relationships were indicated. These results inspired this study on the response of solar activity in 11-year cycle on the temperature structure of the middle atmosphere in the two phases of equatorial QBO of zonal wind at 50 mb, in tropics, mid-latitude and antarctic regions. |
format |
Other/Unknown Material |
author |
Mohanakumar, K. |
author_facet |
Mohanakumar, K. |
author_sort |
Mohanakumar, K. |
title |
Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
title_short |
Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
title_full |
Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
title_fullStr |
Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
title_full_unstemmed |
Influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
title_sort |
influence of solar activity on middle atmosphere associated with phases of equatorial quasi-biennial oscillation |
publishDate |
1989 |
url |
http://hdl.handle.net/2060/19900018852 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19900018852 Accession ID: 90N28168 http://hdl.handle.net/2060/19900018852 |
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No Copyright |
_version_ |
1766061861570084864 |