RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY
The relationship between atmospheric Sea Level Pressure (SLP) and the Sea Level Anomaly (SLA) measurements is investigated during storms and very low pressure conditions. The S- and C-band measurements are used because they are less impacted by rain than the Ku-band. Specific altimeter treatments ne...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.431.1708 2023-05-15T17:33:10+02:00 RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY L. Carrère F. Mertz J. Dor Y. Quilfen Chung-chi Lin The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.431.1708 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.431.1708 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://earth.esa.int/workshops/envisatsymposium/proceedings/sessions/3E3/463452ca.pdf text ftciteseerx 2016-01-08T04:40:29Z The relationship between atmospheric Sea Level Pressure (SLP) and the Sea Level Anomaly (SLA) measurements is investigated during storms and very low pressure conditions. The S- and C-band measurements are used because they are less impacted by rain than the Ku-band. Specific altimeter treatments need to be applied to obtain a relevant along track SSH signal especially during tropical cyclones (SSB and wet troposphere correction). More accurate strong wind speeds have been computed thanks to the Young algorithm. The ocean signal not related to atmospheric pressure needs to be removed with accuracy thanks to alongtrack low-pass filtering fort extra-tropical depressions (ETD) or by removing the maps of SLA provided by SSALTO/Duacs for tropical cyclones (TC). Three different SLP-SLA regression models are proposed for north Atlantic, north Pacific and Indian oceans; the error is 5 mbars if compared to ECMWF or buoys SLP. In order to better understand the SLP-SSH relationship, and the impact of the wind, an analysis of the sea level computed by the MOG2D simulations has been performed. 1. Text North Atlantic Unknown Indian Pacific |
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Open Polar |
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ftciteseerx |
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English |
description |
The relationship between atmospheric Sea Level Pressure (SLP) and the Sea Level Anomaly (SLA) measurements is investigated during storms and very low pressure conditions. The S- and C-band measurements are used because they are less impacted by rain than the Ku-band. Specific altimeter treatments need to be applied to obtain a relevant along track SSH signal especially during tropical cyclones (SSB and wet troposphere correction). More accurate strong wind speeds have been computed thanks to the Young algorithm. The ocean signal not related to atmospheric pressure needs to be removed with accuracy thanks to alongtrack low-pass filtering fort extra-tropical depressions (ETD) or by removing the maps of SLA provided by SSALTO/Duacs for tropical cyclones (TC). Three different SLP-SLA regression models are proposed for north Atlantic, north Pacific and Indian oceans; the error is 5 mbars if compared to ECMWF or buoys SLP. In order to better understand the SLP-SSH relationship, and the impact of the wind, an analysis of the sea level computed by the MOG2D simulations has been performed. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
L. Carrère F. Mertz J. Dor Y. Quilfen Chung-chi Lin |
spellingShingle |
L. Carrère F. Mertz J. Dor Y. Quilfen Chung-chi Lin RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY |
author_facet |
L. Carrère F. Mertz J. Dor Y. Quilfen Chung-chi Lin |
author_sort |
L. Carrère |
title |
RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY |
title_short |
RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY |
title_full |
RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY |
title_fullStr |
RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY |
title_full_unstemmed |
RETRIEVING EXTREME LOW PRESSURE WITH ALTIMETRY |
title_sort |
retrieving extreme low pressure with altimetry |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.431.1708 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
https://earth.esa.int/workshops/envisatsymposium/proceedings/sessions/3E3/463452ca.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.431.1708 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766131580627058688 |