The GEOS-iODAS: Description and Evaluation
This report documents the GMAO's Goddard Earth Observing System sea ice and ocean data assimilation systems (GEOS iODAS) and their evolution from the first reanalysis test, through the implementation that was used to initialize the GMAO decadal forecasts, and to the current system that is used...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20140011278 2023-05-15T18:17:24+02:00 The GEOS-iODAS: Description and Evaluation Vernieres, Guillaume Rienecker, Michele M. Keppenne, Christian L. Kovach, Robin Unclassified, Unlimited, Publicly available December 2012 application/pdf http://hdl.handle.net/2060/20140011278 unknown Document ID: 20140011278 http://hdl.handle.net/2060/20140011278 Copyright, Distribution as joint owner in the copyright CASI Geosciences (General) Earth Resources and Remote Sensing NASA/TM-2012-104606/VOL30 GSFC-E-DAA-TN8300 2012 ftnasantrs 2019-07-21T06:13:50Z This report documents the GMAO's Goddard Earth Observing System sea ice and ocean data assimilation systems (GEOS iODAS) and their evolution from the first reanalysis test, through the implementation that was used to initialize the GMAO decadal forecasts, and to the current system that is used to initialize the GMAO seasonal forecasts. The iODAS assimilates a wide range of observations into the ocean and sea ice components: in-situ temperature and salinity profiles, sea level anomalies from satellite altimetry, analyzed SST, and sea-ice concentration. The climatological sea surface salinity is used to constrain the surface salinity prior to the Argo years. Climatological temperature and salinity gridded data sets from the 2009 version of the World Ocean Atlas (WOA09) are used to help constrain the analysis in data sparse areas. The latest analysis, GEOS ODAS5.2, is diagnosed through detailed studies of the statistics of the innovations and analysis departures, comparisons with independent data, and integrated values such as volume transport. Finally, the climatologies of temperature and salinity fields from the Argo era, 2002-2011, are presented and compared with the WOA09. Other/Unknown Material Sea ice NASA Technical Reports Server (NTRS) |
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Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Geosciences (General) Earth Resources and Remote Sensing |
spellingShingle |
Geosciences (General) Earth Resources and Remote Sensing Vernieres, Guillaume Rienecker, Michele M. Keppenne, Christian L. Kovach, Robin The GEOS-iODAS: Description and Evaluation |
topic_facet |
Geosciences (General) Earth Resources and Remote Sensing |
description |
This report documents the GMAO's Goddard Earth Observing System sea ice and ocean data assimilation systems (GEOS iODAS) and their evolution from the first reanalysis test, through the implementation that was used to initialize the GMAO decadal forecasts, and to the current system that is used to initialize the GMAO seasonal forecasts. The iODAS assimilates a wide range of observations into the ocean and sea ice components: in-situ temperature and salinity profiles, sea level anomalies from satellite altimetry, analyzed SST, and sea-ice concentration. The climatological sea surface salinity is used to constrain the surface salinity prior to the Argo years. Climatological temperature and salinity gridded data sets from the 2009 version of the World Ocean Atlas (WOA09) are used to help constrain the analysis in data sparse areas. The latest analysis, GEOS ODAS5.2, is diagnosed through detailed studies of the statistics of the innovations and analysis departures, comparisons with independent data, and integrated values such as volume transport. Finally, the climatologies of temperature and salinity fields from the Argo era, 2002-2011, are presented and compared with the WOA09. |
format |
Other/Unknown Material |
author |
Vernieres, Guillaume Rienecker, Michele M. Keppenne, Christian L. Kovach, Robin |
author_facet |
Vernieres, Guillaume Rienecker, Michele M. Keppenne, Christian L. Kovach, Robin |
author_sort |
Vernieres, Guillaume |
title |
The GEOS-iODAS: Description and Evaluation |
title_short |
The GEOS-iODAS: Description and Evaluation |
title_full |
The GEOS-iODAS: Description and Evaluation |
title_fullStr |
The GEOS-iODAS: Description and Evaluation |
title_full_unstemmed |
The GEOS-iODAS: Description and Evaluation |
title_sort |
geos-iodas: description and evaluation |
publishDate |
2012 |
url |
http://hdl.handle.net/2060/20140011278 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20140011278 http://hdl.handle.net/2060/20140011278 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766191602788728832 |