Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity
The Antarctic Circumpolar Current (ACC) constitutes the largest ocean current of the world. In the Atlantic sectorof the ACC, an array of 9 Pressure sensor equipped Inverted Echo Sounders (PIES) is maintained by the AlfredWegener Institute since 2002 / 2006. Here, the resulting timeseries are compar...
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ftawi:oai:epic.awi.de:21418 2024-09-15T17:47:05+00:00 Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity Macrander, Annecke Böning, Carmen Boebel, Olaf Schröter, Jens 2009 application/pdf https://epic.awi.de/id/eprint/21418/ https://epic.awi.de/id/eprint/21418/1/Mac2009i.pdf https://hdl.handle.net/10013/epic.33766 https://hdl.handle.net/10013/epic.33766.d001 unknown https://epic.awi.de/id/eprint/21418/1/Mac2009i.pdf https://hdl.handle.net/10013/epic.33766.d001 Macrander, A. , Böning, C. , Boebel, O. orcid:0000-0002-2259-0035 and Schröter, J. orcid:0000-0002-9240-5798 (2009) Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity , Geophysical Research Abstracts, Vol. 11, EGU2009-11172 . hdl:10013/epic.33766 EPIC3Geophysical Research Abstracts, Vol. 11, EGU2009-11172, 2009 p. Conference notRev 2009 ftawi 2024-06-24T04:01:33Z The Antarctic Circumpolar Current (ACC) constitutes the largest ocean current of the world. In the Atlantic sectorof the ACC, an array of 9 Pressure sensor equipped Inverted Echo Sounders (PIES) is maintained by the AlfredWegener Institute since 2002 / 2006. Here, the resulting timeseries are compared with altimetry and gravity fieldsolutions of the GRACE satellite mission.Barotropic transport anomalies of the ACC are captured by the high-resolution in-situ bottom pressure observations.Additionally, the acoustic traveltime data of the PIES can be matched with full-water column T/S profiles,using the Gravest Empirical Mode (GEM) method. Hence, also baroclinic transport variability and Sea SurfaceHeight (SSH) are obtained from the PIES array.For a comprehensive view of the ACC, the in-situ data are compared with altimetry estimates of the Topex/Jasonsatellite missions.Furthermore, ocean bottom pressure, which is a measure of oceanic mass, is compared with gravity solutions ofthe GRACE satellite mission. Here, the 2-dimensional distribution of the PIES allows an improved detection oflarge-scale coherent bottom pressure patterns, which agree well with gravity anomalies found in the GRACE data. Conference Object Antarc* Antarctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
The Antarctic Circumpolar Current (ACC) constitutes the largest ocean current of the world. In the Atlantic sectorof the ACC, an array of 9 Pressure sensor equipped Inverted Echo Sounders (PIES) is maintained by the AlfredWegener Institute since 2002 / 2006. Here, the resulting timeseries are compared with altimetry and gravity fieldsolutions of the GRACE satellite mission.Barotropic transport anomalies of the ACC are captured by the high-resolution in-situ bottom pressure observations.Additionally, the acoustic traveltime data of the PIES can be matched with full-water column T/S profiles,using the Gravest Empirical Mode (GEM) method. Hence, also baroclinic transport variability and Sea SurfaceHeight (SSH) are obtained from the PIES array.For a comprehensive view of the ACC, the in-situ data are compared with altimetry estimates of the Topex/Jasonsatellite missions.Furthermore, ocean bottom pressure, which is a measure of oceanic mass, is compared with gravity solutions ofthe GRACE satellite mission. Here, the 2-dimensional distribution of the PIES allows an improved detection oflarge-scale coherent bottom pressure patterns, which agree well with gravity anomalies found in the GRACE data. |
format |
Conference Object |
author |
Macrander, Annecke Böning, Carmen Boebel, Olaf Schröter, Jens |
spellingShingle |
Macrander, Annecke Böning, Carmen Boebel, Olaf Schröter, Jens Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity |
author_facet |
Macrander, Annecke Böning, Carmen Boebel, Olaf Schröter, Jens |
author_sort |
Macrander, Annecke |
title |
Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity |
title_short |
Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity |
title_full |
Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity |
title_fullStr |
Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity |
title_full_unstemmed |
Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity |
title_sort |
antarctic circumpolar current variability a combined analysis of in-situ bottom pressure, altimetry, and grace gravity |
publishDate |
2009 |
url |
https://epic.awi.de/id/eprint/21418/ https://epic.awi.de/id/eprint/21418/1/Mac2009i.pdf https://hdl.handle.net/10013/epic.33766 https://hdl.handle.net/10013/epic.33766.d001 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
EPIC3Geophysical Research Abstracts, Vol. 11, EGU2009-11172, 2009 p. |
op_relation |
https://epic.awi.de/id/eprint/21418/1/Mac2009i.pdf https://hdl.handle.net/10013/epic.33766.d001 Macrander, A. , Böning, C. , Boebel, O. orcid:0000-0002-2259-0035 and Schröter, J. orcid:0000-0002-9240-5798 (2009) Antarctic Circumpolar Current variability a combined analysis of in-situ Bottom Pressure, Altimetry, and GRACE gravity , Geophysical Research Abstracts, Vol. 11, EGU2009-11172 . hdl:10013/epic.33766 |
_version_ |
1810495668003799040 |