Atmospheric temperature responses to solar irradiance and geomagnetic activity
The relative effects of solar irradiance and geomagnetic activity on the atmospheric temperature anomalies (Ta) are examined from the monthly to interdecadal timescales. Geomagnetic Ap (Ap) signals are found primarily in the stratosphere, while the solar F10.7-cm radio flux (Fs) signals are found in...
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American Geophysical Union
2007
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ftnerc:oai:nora.nerc.ac.uk:5936 2024-06-09T07:43:56+00:00 Atmospheric temperature responses to solar irradiance and geomagnetic activity Lu, Hua Jarvis, Martin J. Graf, Hans-F. Young, Peter C. Horne, Richard B. 2007 text http://nora.nerc.ac.uk/id/eprint/5936/ https://nora.nerc.ac.uk/id/eprint/5936/1/Luetal_2006JD007864_JGR_NORA.pdf http://www.agu.org/pubs/crossref/2007/2006JD007864.shtml https://doi.org/10.1029/2006JD007864 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/5936/1/Luetal_2006JD007864_JGR_NORA.pdf Lu, Hua orcid:0000-0001-9485-5082 Jarvis, Martin J.; Graf, Hans-F.; Young, Peter C.; Horne, Richard B. orcid:0000-0002-0412-6407 . 2007 Atmospheric temperature responses to solar irradiance and geomagnetic activity. Journal of Geophysical Research, 112 (D11), D11109. 18, pp. https://doi.org/10.1029/2006JD007864 <https://doi.org/10.1029/2006JD007864> Meteorology and Climatology Atmospheric Sciences Publication - Article PeerReviewed 2007 ftnerc https://doi.org/10.1029/2006JD007864 2024-05-15T08:52:26Z The relative effects of solar irradiance and geomagnetic activity on the atmospheric temperature anomalies (Ta) are examined from the monthly to interdecadal timescales. Geomagnetic Ap (Ap) signals are found primarily in the stratosphere, while the solar F10.7-cm radio flux (Fs) signals are found in both the stratosphere and troposphere. In the troposphere, 0.1–0.4 K increases in Ta are associated with Fs. Enhanced Fs signals are found when the stratospheric quasi-biennial oscillation (QBO) is westerly. In the extrapolar region of the stratosphere, 0.1–0.6 and 0.1–0.7 K increases in Ta are associated with solar irradiance and with geomagnetic activity, respectively. In this region, Fs signals are strengthened when either the QBO is easterly, or geomagnetic activity is high, while Ap signals are strengthened when either the QBO is westerly, or solar irradiance is high. High solar irradiance and geomagnetic activity tend to enhance each other's signatures either making the signals stronger and symmetric about the equator or extending the signals to broader areas, or both. Positive Ap signals dominate the middle Arctic stratosphere and are two to five times larger than those of Fs. When solar irradiance is low, the signature of Ap in Ta is asymmetric about the equator, with positive signals in the Arctic stratosphere and negative signals at midlatitudes of the NH stratosphere. Weaker stratospheric QBO signals are associated with high Ap and Fs, suggesting possible disturbances on the QBO. The signals of Ap and Fs are distinct from the positive temperature anomalies resulting from volcanic eruptions. Article in Journal/Newspaper Arctic Natural Environment Research Council: NERC Open Research Archive Arctic Journal of Geophysical Research 112 D11 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Meteorology and Climatology Atmospheric Sciences |
spellingShingle |
Meteorology and Climatology Atmospheric Sciences Lu, Hua Jarvis, Martin J. Graf, Hans-F. Young, Peter C. Horne, Richard B. Atmospheric temperature responses to solar irradiance and geomagnetic activity |
topic_facet |
Meteorology and Climatology Atmospheric Sciences |
description |
The relative effects of solar irradiance and geomagnetic activity on the atmospheric temperature anomalies (Ta) are examined from the monthly to interdecadal timescales. Geomagnetic Ap (Ap) signals are found primarily in the stratosphere, while the solar F10.7-cm radio flux (Fs) signals are found in both the stratosphere and troposphere. In the troposphere, 0.1–0.4 K increases in Ta are associated with Fs. Enhanced Fs signals are found when the stratospheric quasi-biennial oscillation (QBO) is westerly. In the extrapolar region of the stratosphere, 0.1–0.6 and 0.1–0.7 K increases in Ta are associated with solar irradiance and with geomagnetic activity, respectively. In this region, Fs signals are strengthened when either the QBO is easterly, or geomagnetic activity is high, while Ap signals are strengthened when either the QBO is westerly, or solar irradiance is high. High solar irradiance and geomagnetic activity tend to enhance each other's signatures either making the signals stronger and symmetric about the equator or extending the signals to broader areas, or both. Positive Ap signals dominate the middle Arctic stratosphere and are two to five times larger than those of Fs. When solar irradiance is low, the signature of Ap in Ta is asymmetric about the equator, with positive signals in the Arctic stratosphere and negative signals at midlatitudes of the NH stratosphere. Weaker stratospheric QBO signals are associated with high Ap and Fs, suggesting possible disturbances on the QBO. The signals of Ap and Fs are distinct from the positive temperature anomalies resulting from volcanic eruptions. |
format |
Article in Journal/Newspaper |
author |
Lu, Hua Jarvis, Martin J. Graf, Hans-F. Young, Peter C. Horne, Richard B. |
author_facet |
Lu, Hua Jarvis, Martin J. Graf, Hans-F. Young, Peter C. Horne, Richard B. |
author_sort |
Lu, Hua |
title |
Atmospheric temperature responses to solar irradiance and geomagnetic activity |
title_short |
Atmospheric temperature responses to solar irradiance and geomagnetic activity |
title_full |
Atmospheric temperature responses to solar irradiance and geomagnetic activity |
title_fullStr |
Atmospheric temperature responses to solar irradiance and geomagnetic activity |
title_full_unstemmed |
Atmospheric temperature responses to solar irradiance and geomagnetic activity |
title_sort |
atmospheric temperature responses to solar irradiance and geomagnetic activity |
publisher |
American Geophysical Union |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/5936/ https://nora.nerc.ac.uk/id/eprint/5936/1/Luetal_2006JD007864_JGR_NORA.pdf http://www.agu.org/pubs/crossref/2007/2006JD007864.shtml https://doi.org/10.1029/2006JD007864 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/5936/1/Luetal_2006JD007864_JGR_NORA.pdf Lu, Hua orcid:0000-0001-9485-5082 Jarvis, Martin J.; Graf, Hans-F.; Young, Peter C.; Horne, Richard B. orcid:0000-0002-0412-6407 . 2007 Atmospheric temperature responses to solar irradiance and geomagnetic activity. Journal of Geophysical Research, 112 (D11), D11109. 18, pp. https://doi.org/10.1029/2006JD007864 <https://doi.org/10.1029/2006JD007864> |
op_doi |
https://doi.org/10.1029/2006JD007864 |
container_title |
Journal of Geophysical Research |
container_volume |
112 |
container_issue |
D11 |
_version_ |
1801372757516091392 |