Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica
Temperature profiles from two satellite instruments – TIMED/SABER and Aura/MLS – have been used to calculate hydroxyl-layer equivalent temperatures for comparison with values measured from OH(6-2) emission lines observed by a ground-based spectrometer located at Davis Station, Antarctica (68 S, 78 E...
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Online Access: | https://mural.maynoothuniversity.ie/2698/ https://doi.org/10.5194/acp-10-11439-2010 https://mural.maynoothuniversity.ie/2698/1/FM_Stability.pdf |
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ftunivmaynooth:oai:mural.maynoothuniversity.ie:2698 2023-05-15T13:50:23+02:00 Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica French, W.J.R. Mulligan, F.J. 2010 application/pdf https://mural.maynoothuniversity.ie/2698/ https://doi.org/10.5194/acp-10-11439-2010 https://mural.maynoothuniversity.ie/2698/1/FM_Stability.pdf en eng Copernicus Publications for European Geosciences Union (EGU) https://mural.maynoothuniversity.ie/2698/1/FM_Stability.pdf French, W.J.R. and Mulligan, F.J. (2010) Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica. Atmospheric Chemistry and Physics, 10. pp. 11439-11446. ISSN 1680-7316 Experimental Physics Article PeerReviewed 2010 ftunivmaynooth https://doi.org/10.5194/acp-10-11439-2010 2022-06-13T18:42:29Z Temperature profiles from two satellite instruments – TIMED/SABER and Aura/MLS – have been used to calculate hydroxyl-layer equivalent temperatures for comparison with values measured from OH(6-2) emission lines observed by a ground-based spectrometer located at Davis Station, Antarctica (68 S, 78 E). The profile selection criteria – miss-distance <500 km from the ground station and solar zenith angles >97 – yielded a total of 2359 SABER profiles over 8 years (2002–2009) and 7407 MLS profiles over 5.5 years (2004–2009). The availability of simultaneous OH volume emission rate (VER) profiles from the SABER (OH-B channel) enabled an assessment of the impact of several different weighting functions in the calculation of OHequivalent temperatures. The maximum difference between all derived hydroxyl layer equivalent temperatures was less than 3 K. Restricting the miss-distance and miss-time criteria showed little effect on the bias, suggesting that the OH layer is relatively uniform over the spatial and temporal scales considered. However, a significant trend was found in the bias between SABER and Davis OH of 0.7 K/year over the 8- year period with SABER becoming warmer compared with the Davis OH temperatures. In contrast, Aura/MLS exhibited a cold bias of 9.9±0.4K compared with Davis OH, but importantly, the bias remained constant over the 2004– 2009 year period examined. The difference in bias behaviour of the two satellites has significant implications for multiannual and long-term studies using their data. Article in Journal/Newspaper Antarc* Antarctica Maynooth University ePrints and eTheses Archive (National University of Ireland) Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) Atmospheric Chemistry and Physics 10 23 11439 11446 |
institution |
Open Polar |
collection |
Maynooth University ePrints and eTheses Archive (National University of Ireland) |
op_collection_id |
ftunivmaynooth |
language |
English |
topic |
Experimental Physics |
spellingShingle |
Experimental Physics French, W.J.R. Mulligan, F.J. Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica |
topic_facet |
Experimental Physics |
description |
Temperature profiles from two satellite instruments – TIMED/SABER and Aura/MLS – have been used to calculate hydroxyl-layer equivalent temperatures for comparison with values measured from OH(6-2) emission lines observed by a ground-based spectrometer located at Davis Station, Antarctica (68 S, 78 E). The profile selection criteria – miss-distance <500 km from the ground station and solar zenith angles >97 – yielded a total of 2359 SABER profiles over 8 years (2002–2009) and 7407 MLS profiles over 5.5 years (2004–2009). The availability of simultaneous OH volume emission rate (VER) profiles from the SABER (OH-B channel) enabled an assessment of the impact of several different weighting functions in the calculation of OHequivalent temperatures. The maximum difference between all derived hydroxyl layer equivalent temperatures was less than 3 K. Restricting the miss-distance and miss-time criteria showed little effect on the bias, suggesting that the OH layer is relatively uniform over the spatial and temporal scales considered. However, a significant trend was found in the bias between SABER and Davis OH of 0.7 K/year over the 8- year period with SABER becoming warmer compared with the Davis OH temperatures. In contrast, Aura/MLS exhibited a cold bias of 9.9±0.4K compared with Davis OH, but importantly, the bias remained constant over the 2004– 2009 year period examined. The difference in bias behaviour of the two satellites has significant implications for multiannual and long-term studies using their data. |
format |
Article in Journal/Newspaper |
author |
French, W.J.R. Mulligan, F.J. |
author_facet |
French, W.J.R. Mulligan, F.J. |
author_sort |
French, W.J.R. |
title |
Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica |
title_short |
Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica |
title_full |
Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica |
title_fullStr |
Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica |
title_full_unstemmed |
Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica |
title_sort |
stability of temperatures from timed/saber v1.07 (2002–2009) and aura/mls v2.2 (2004–2009) compared with oh(6-2) temperatures observed at davis station, antarctica |
publisher |
Copernicus Publications for European Geosciences Union (EGU) |
publishDate |
2010 |
url |
https://mural.maynoothuniversity.ie/2698/ https://doi.org/10.5194/acp-10-11439-2010 https://mural.maynoothuniversity.ie/2698/1/FM_Stability.pdf |
long_lat |
ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) |
geographic |
Davis Station Davis-Station |
geographic_facet |
Davis Station Davis-Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://mural.maynoothuniversity.ie/2698/1/FM_Stability.pdf French, W.J.R. and Mulligan, F.J. (2010) Stability of temperatures from TIMED/SABER v1.07 (2002–2009) and Aura/MLS v2.2 (2004–2009) compared with OH(6-2) temperatures observed at Davis Station, Antarctica. Atmospheric Chemistry and Physics, 10. pp. 11439-11446. ISSN 1680-7316 |
op_doi |
https://doi.org/10.5194/acp-10-11439-2010 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
10 |
container_issue |
23 |
container_start_page |
11439 |
op_container_end_page |
11446 |
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1766253443935109120 |