Simulation and observation of global ocean mass anomalies.
Recently reprocessed GRACE gravity fields are found to provide reliable ocean mass anomalies down to 500 km regional averages when comparing them to mass observations obtained from sterically corrected Jason 1 altimetry and simulated mass anomalies derived from the Ocean Model for Circulation and Ti...
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2007
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_235380 2023-05-15T18:25:23+02:00 Simulation and observation of global ocean mass anomalies. Dobslaw, H. Thomas, M. 0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum 1.3 Earth System Modelling, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum 2007 https://gfzpublic.gfz-potsdam.de/pubman/item/item_235380 unknown info:eu-repo/semantics/altIdentifier/doi/10.1029/2006JC004035 https://gfzpublic.gfz-potsdam.de/pubman/item/item_235380 Journal of Geophysical Research 550 - Earth sciences info:eu-repo/semantics/article 2007 ftgfzpotsdam https://doi.org/10.1029/2006JC004035 2022-09-14T05:54:40Z Recently reprocessed GRACE gravity fields are found to provide reliable ocean mass anomalies down to 500 km regional averages when comparing them to mass observations obtained from sterically corrected Jason 1 altimetry and simulated mass anomalies derived from the Ocean Model for Circulation and Tides (OMCT). Beside the assessment of systematic shortcomings of GRACE, Jason 1 and OMCT estimates, robust signals of mass anomalies in the North Pacific and in various regions of the Southern Ocean are identified in all three independent data sets. Correlations of up to 0.8 and rms values of differences of around 2 hPa indicate that uncertainties are well below the expected monthly mean mass signals of up to 6 hPa rms in these regions. By means of output of the numerical ocean model, mass anomalies are related to changes in barotropic ocean currents, providing in turn the opportunity to infer barotropic current anomalies from GRACE observations, and therefore principally allowing to monitor climate relevant changes of ocean currents from satellite observations. Article in Journal/Newspaper Southern Ocean GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Southern Ocean Pacific Journal of Geophysical Research 112 C5 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
topic |
550 - Earth sciences |
spellingShingle |
550 - Earth sciences Dobslaw, H. Thomas, M. Simulation and observation of global ocean mass anomalies. |
topic_facet |
550 - Earth sciences |
description |
Recently reprocessed GRACE gravity fields are found to provide reliable ocean mass anomalies down to 500 km regional averages when comparing them to mass observations obtained from sterically corrected Jason 1 altimetry and simulated mass anomalies derived from the Ocean Model for Circulation and Tides (OMCT). Beside the assessment of systematic shortcomings of GRACE, Jason 1 and OMCT estimates, robust signals of mass anomalies in the North Pacific and in various regions of the Southern Ocean are identified in all three independent data sets. Correlations of up to 0.8 and rms values of differences of around 2 hPa indicate that uncertainties are well below the expected monthly mean mass signals of up to 6 hPa rms in these regions. By means of output of the numerical ocean model, mass anomalies are related to changes in barotropic ocean currents, providing in turn the opportunity to infer barotropic current anomalies from GRACE observations, and therefore principally allowing to monitor climate relevant changes of ocean currents from satellite observations. |
author2 |
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum 1.3 Earth System Modelling, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum |
format |
Article in Journal/Newspaper |
author |
Dobslaw, H. Thomas, M. |
author_facet |
Dobslaw, H. Thomas, M. |
author_sort |
Dobslaw, H. |
title |
Simulation and observation of global ocean mass anomalies. |
title_short |
Simulation and observation of global ocean mass anomalies. |
title_full |
Simulation and observation of global ocean mass anomalies. |
title_fullStr |
Simulation and observation of global ocean mass anomalies. |
title_full_unstemmed |
Simulation and observation of global ocean mass anomalies. |
title_sort |
simulation and observation of global ocean mass anomalies. |
publishDate |
2007 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_235380 |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Journal of Geophysical Research |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2006JC004035 https://gfzpublic.gfz-potsdam.de/pubman/item/item_235380 |
op_doi |
https://doi.org/10.1029/2006JC004035 |
container_title |
Journal of Geophysical Research |
container_volume |
112 |
container_issue |
C5 |
_version_ |
1766206816093470720 |