Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS)
<p>Temperature trends in the upper stratosphere, particularly above <span class="inline-formula">∼</span> 45 km, are difficult to quantify due to a lack of observational data with high vertical resolution in this region that span multiple decades. The recent v7.3 upper-s...
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Copernicus Publications
2024-11-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024.pdf |
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| author | K. Dubé S. Tegtmeier A. Bourassa D. Zawada D. Degenstein W. Randel S. Davis M. Schwartz N. Livesey A. Smith |
| author_facet | K. Dubé S. Tegtmeier A. Bourassa D. Zawada D. Degenstein W. Randel S. Davis M. Schwartz N. Livesey A. Smith |
| author_sort | K. Dubé |
| collection | DOAJ |
| description | <p>Temperature trends in the upper stratosphere, particularly above <span class="inline-formula">∼</span> 45 km, are difficult to quantify due to a lack of observational data with high vertical resolution in this region that span multiple decades. The recent v7.3 upper-stratospheric (35–60 km) temperature data product from the Optical Spectrograph and InfraRed Imager System (OSIRIS) includes over 22 years of observations that can be used to estimate temperature trends. The trends in OSIRIS temperatures over 2005–2021 are compared to those from two other satellite limb instruments: Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and Microwave Limb Sounder (MLS). We find that the upper stratosphere cooled by <span class="inline-formula">∼</span> 0.5 to 1 K per decade during this period. Results from the three instruments are generally in agreement. By merging the OSIRIS observations with those from channel 3 of the Stratospheric Sounding Unit (SSU), we find that the stratosphere cooled at a rate of approximately <span class="inline-formula">−</span>0.6 K per decade between 1979 and 2021 near 45 km, in agreement with earlier results based on SSU and MLS. The similarity between OSIRIS temperature trends and those from other records improves confidence in observed upper-stratospheric temperature changes over the last several decades.</p> |
| format | Article |
| id | doaj-art-adca48b6419f4697a91044c0527dfb3d |
| institution | Kabale University |
| issn | 1680-7316 1680-7324 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj-art-adca48b6419f4697a91044c0527dfb3d2024-11-21T14:35:34ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242024-11-0124129251294110.5194/acp-24-12925-2024Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS)K. Dubé0S. Tegtmeier1A. Bourassa2D. Zawada3D. Degenstein4W. Randel5S. Davis6M. Schwartz7N. Livesey8A. Smith9Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, CanadaInstitute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, CanadaInstitute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, CanadaInstitute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, CanadaInstitute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, CanadaNSF National Center for Atmospheric Research, Boulder, CO, USANOAA Chemical Sciences Laboratory, Boulder, CO, USAJet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USAJet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USANSF National Center for Atmospheric Research, Boulder, CO, USA<p>Temperature trends in the upper stratosphere, particularly above <span class="inline-formula">∼</span> 45 km, are difficult to quantify due to a lack of observational data with high vertical resolution in this region that span multiple decades. The recent v7.3 upper-stratospheric (35–60 km) temperature data product from the Optical Spectrograph and InfraRed Imager System (OSIRIS) includes over 22 years of observations that can be used to estimate temperature trends. The trends in OSIRIS temperatures over 2005–2021 are compared to those from two other satellite limb instruments: Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and Microwave Limb Sounder (MLS). We find that the upper stratosphere cooled by <span class="inline-formula">∼</span> 0.5 to 1 K per decade during this period. Results from the three instruments are generally in agreement. By merging the OSIRIS observations with those from channel 3 of the Stratospheric Sounding Unit (SSU), we find that the stratosphere cooled at a rate of approximately <span class="inline-formula">−</span>0.6 K per decade between 1979 and 2021 near 45 km, in agreement with earlier results based on SSU and MLS. The similarity between OSIRIS temperature trends and those from other records improves confidence in observed upper-stratospheric temperature changes over the last several decades.</p>https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024.pdf |
| spellingShingle | K. Dubé S. Tegtmeier A. Bourassa D. Zawada D. Degenstein W. Randel S. Davis M. Schwartz N. Livesey A. Smith Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS) Atmospheric Chemistry and Physics |
| title | Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS) |
| title_full | Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS) |
| title_fullStr | Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS) |
| title_full_unstemmed | Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS) |
| title_short | Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS) |
| title_sort | upper stratospheric temperature trends new results from the optical spectrograph and infrared imager system osiris |
| url | https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024.pdf |
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