An update of observed stratospheric temperature trends
An updated analysis of observed stratospheric temperature variability and trends is presented on the basis of satellite, radiosonde, and lidar observations. Satellite data include measurements from the series of NOAA operational instruments, including the Microwave Sounding Unit covering 1979 - 2007...
Published in: | Journal of Geophysical Research |
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Language: | English |
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American Geophysical Union
2009
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-525 https://doi.org/10.1029/2008JD010421 |
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ftncar:oai:drupal-site.org:articles_15424 2023-09-05T13:15:19+02:00 An update of observed stratospheric temperature trends Randel, William (author) Shine, Keith (author) Austin, John (author) Barnett, John (author) Claud, Chantal (author) Gillett, Nathan (author) Keckhut, Philippe (author) Langematz, Ulrike (author) Lin, Roger (author) Long, Craig (author) Mears, Carl (author) Miller, Alvin (author) Nash, John (author) Seidel, Dian (author) Thompson, David (author) Wu, Fei (author) Yoden, Shigeo (author) 2009-01-23 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-525 https://doi.org/10.1029/2008JD010421 en eng American Geophysical Union Journal of Geophysical Research http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-525 doi:10.1029/2008JD010421 ark:/85065/d7mp54bn An edited version of this paper was published by AGU. Copyright 2009 American Geophysical Union. Stratosphere Trends Text article 2009 ftncar https://doi.org/10.1029/2008JD010421 2023-08-14T18:41:43Z An updated analysis of observed stratospheric temperature variability and trends is presented on the basis of satellite, radiosonde, and lidar observations. Satellite data include measurements from the series of NOAA operational instruments, including the Microwave Sounding Unit covering 1979 - 2007 and the Stratospheric Sounding Unit (SSU) covering 1979 - 2005. Radiosonde results are compared for six different data sets, incorporating a variety of homogeneity adjustments to account for changes in instrumentation and observational practices. Temperature changes in the lower stratosphere show cooling of -0.5 K/decade over much of the globe for 1979 - 2007, with some differences in detail among the different radiosonde and satellite data sets. Substantially larger cooling trends are observed in the Antarctic lower stratosphere during spring and summer, in association with development of the Antarctic ozone hole. Trends in the lower stratosphere derived from radiosonde data are also analyzed for a longer record (back to 1958); trends for the presatellite era (1958 - 1978) have a large range among the different homogenized data sets, implying large trend uncertainties. Trends in the middle and upper stratosphere have been derived from updated SSU data, taking into account changes in the SSU weighting functions due to observed atmospheric CO₂ increases. The results show mean cooling of 0.5 - 1.5 K/decade during 1979 - 2005, with the greatest cooling in the upper stratosphere near 40 - 50 km. Temperature anomalies throughout the stratosphere were relatively constant during the decade 1995 - 2005. Long records of lidar temperature measurements at a few locations show reasonable agreement with SSU trends, although sampling uncertainties are large in the localized lidar measurements. Updated estimates of the solar cycle influence on stratospheric temperatures show a statistically significant signal in the tropics (-30°N - S), with an amplitude (solar maximum minus solar minimum) of -0.5 K (lower stratosphere) to -1.0 K ... Article in Journal/Newspaper Antarc* Antarctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic The Antarctic Journal of Geophysical Research 114 D2 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Stratosphere Trends |
spellingShingle |
Stratosphere Trends An update of observed stratospheric temperature trends |
topic_facet |
Stratosphere Trends |
description |
An updated analysis of observed stratospheric temperature variability and trends is presented on the basis of satellite, radiosonde, and lidar observations. Satellite data include measurements from the series of NOAA operational instruments, including the Microwave Sounding Unit covering 1979 - 2007 and the Stratospheric Sounding Unit (SSU) covering 1979 - 2005. Radiosonde results are compared for six different data sets, incorporating a variety of homogeneity adjustments to account for changes in instrumentation and observational practices. Temperature changes in the lower stratosphere show cooling of -0.5 K/decade over much of the globe for 1979 - 2007, with some differences in detail among the different radiosonde and satellite data sets. Substantially larger cooling trends are observed in the Antarctic lower stratosphere during spring and summer, in association with development of the Antarctic ozone hole. Trends in the lower stratosphere derived from radiosonde data are also analyzed for a longer record (back to 1958); trends for the presatellite era (1958 - 1978) have a large range among the different homogenized data sets, implying large trend uncertainties. Trends in the middle and upper stratosphere have been derived from updated SSU data, taking into account changes in the SSU weighting functions due to observed atmospheric CO₂ increases. The results show mean cooling of 0.5 - 1.5 K/decade during 1979 - 2005, with the greatest cooling in the upper stratosphere near 40 - 50 km. Temperature anomalies throughout the stratosphere were relatively constant during the decade 1995 - 2005. Long records of lidar temperature measurements at a few locations show reasonable agreement with SSU trends, although sampling uncertainties are large in the localized lidar measurements. Updated estimates of the solar cycle influence on stratospheric temperatures show a statistically significant signal in the tropics (-30°N - S), with an amplitude (solar maximum minus solar minimum) of -0.5 K (lower stratosphere) to -1.0 K ... |
author2 |
Randel, William (author) Shine, Keith (author) Austin, John (author) Barnett, John (author) Claud, Chantal (author) Gillett, Nathan (author) Keckhut, Philippe (author) Langematz, Ulrike (author) Lin, Roger (author) Long, Craig (author) Mears, Carl (author) Miller, Alvin (author) Nash, John (author) Seidel, Dian (author) Thompson, David (author) Wu, Fei (author) Yoden, Shigeo (author) |
format |
Article in Journal/Newspaper |
title |
An update of observed stratospheric temperature trends |
title_short |
An update of observed stratospheric temperature trends |
title_full |
An update of observed stratospheric temperature trends |
title_fullStr |
An update of observed stratospheric temperature trends |
title_full_unstemmed |
An update of observed stratospheric temperature trends |
title_sort |
update of observed stratospheric temperature trends |
publisher |
American Geophysical Union |
publishDate |
2009 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-525 https://doi.org/10.1029/2008JD010421 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Journal of Geophysical Research http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-525 doi:10.1029/2008JD010421 ark:/85065/d7mp54bn |
op_rights |
An edited version of this paper was published by AGU. Copyright 2009 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2008JD010421 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
D2 |
_version_ |
1776197127551057920 |