Monitoring temperature trends in Antarctica using GPS radio occultation
In late 2005, the US-Taiwan joint satellite mission known as the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) will launch six Low Earth Orbit (LEO) satellites. These satellites, each equipped with an advanced Global Positioning System (GPS) receiver, will use radi...
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ftncar:oai:drupal-site.org:manuscripts_472 2023-10-09T21:46:10+02:00 Monitoring temperature trends in Antarctica using GPS radio occultation Adame, Erick (author) Kuo, Ying-Hwa (contributor) Schreiner, William (contributor) Rocken, Christian (contributor) Page, Michael (contributor) 2004 application/pdf http://nldr.library.ucar.edu/repository/collections/SOARS-000-000-000-064 https://doi.org/10.5065/cmqf-z108 en eng SOARS Earth, Wind, Sea, and Sky: Protégé Abstracts 2004--10.5065/1dfm-r083 http://nldr.library.ucar.edu/repository/collections/SOARS-000-000-000-064 ark:/85065/d77s7mnv doi:10.5065/cmqf-z108 Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Text manuscript 2004 ftncar https://doi.org/10.5065/cmqf-z108 2023-09-11T18:18:51Z In late 2005, the US-Taiwan joint satellite mission known as the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) will launch six Low Earth Orbit (LEO) satellites. These satellites, each equipped with an advanced Global Positioning System (GPS) receiver, will use radio occultation (RO) limb sounding technology to profile the Earth’s atmosphere with unprecedented accuracy and vertical resolution. The GPS RO soundings available from COSMIC will make significant contributions to global weather prediction, ionospheric research, and climate monitoring. The GPS receivers will measure the phase and amplitude. From that we can deduce the bending angles as a function of height, and obtain vertical profiles of refractivity using the Abel inversion under the local spherical symmetry assumption. To demonstrate the potential value of GPS RO data in climate monitoring, we analyzed GPS RO data obtained from a recent single-satellite German mission, known as the CHAllenging Mini Payload for Geophysical Research and Application (CHAMP). This study examined the monthly mean temperatures over the Antarctic using the CHAMP GPS RO data, provided by UCAR’s COSMIC Data Analysis and Archive Center (CDAAC), from June 2001 through present. Seasonal and annual variations of tropopause temperature and altitude were analyzed, as well as the cooling/warming trends in the troposphere and stratosphere. These trends and variations were compared against similar analyses derived from the radiosonde data and the ECMWF and NCEP global analyses. Results show that GPS data can be used to assess the accuracy of global analyses and radiosonde data. This study highlights the usefulness of GPS RO data in climate monitoring. Manuscript Antarc* Antarctic Antarctica OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic The Antarctic |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
In late 2005, the US-Taiwan joint satellite mission known as the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) will launch six Low Earth Orbit (LEO) satellites. These satellites, each equipped with an advanced Global Positioning System (GPS) receiver, will use radio occultation (RO) limb sounding technology to profile the Earth’s atmosphere with unprecedented accuracy and vertical resolution. The GPS RO soundings available from COSMIC will make significant contributions to global weather prediction, ionospheric research, and climate monitoring. The GPS receivers will measure the phase and amplitude. From that we can deduce the bending angles as a function of height, and obtain vertical profiles of refractivity using the Abel inversion under the local spherical symmetry assumption. To demonstrate the potential value of GPS RO data in climate monitoring, we analyzed GPS RO data obtained from a recent single-satellite German mission, known as the CHAllenging Mini Payload for Geophysical Research and Application (CHAMP). This study examined the monthly mean temperatures over the Antarctic using the CHAMP GPS RO data, provided by UCAR’s COSMIC Data Analysis and Archive Center (CDAAC), from June 2001 through present. Seasonal and annual variations of tropopause temperature and altitude were analyzed, as well as the cooling/warming trends in the troposphere and stratosphere. These trends and variations were compared against similar analyses derived from the radiosonde data and the ECMWF and NCEP global analyses. Results show that GPS data can be used to assess the accuracy of global analyses and radiosonde data. This study highlights the usefulness of GPS RO data in climate monitoring. |
author2 |
Adame, Erick (author) Kuo, Ying-Hwa (contributor) Schreiner, William (contributor) Rocken, Christian (contributor) Page, Michael (contributor) |
format |
Manuscript |
title |
Monitoring temperature trends in Antarctica using GPS radio occultation |
spellingShingle |
Monitoring temperature trends in Antarctica using GPS radio occultation |
title_short |
Monitoring temperature trends in Antarctica using GPS radio occultation |
title_full |
Monitoring temperature trends in Antarctica using GPS radio occultation |
title_fullStr |
Monitoring temperature trends in Antarctica using GPS radio occultation |
title_full_unstemmed |
Monitoring temperature trends in Antarctica using GPS radio occultation |
title_sort |
monitoring temperature trends in antarctica using gps radio occultation |
publishDate |
2004 |
url |
http://nldr.library.ucar.edu/repository/collections/SOARS-000-000-000-064 https://doi.org/10.5065/cmqf-z108 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
SOARS Earth, Wind, Sea, and Sky: Protégé Abstracts 2004--10.5065/1dfm-r083 http://nldr.library.ucar.edu/repository/collections/SOARS-000-000-000-064 ark:/85065/d77s7mnv doi:10.5065/cmqf-z108 |
op_rights |
Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.5065/cmqf-z108 |
_version_ |
1779321812355645440 |