FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE
Soil moisture was recently included in the list of Essential Climate Variables (ECVs) that are deemed essential for IPCC (Intergovernmental Panel on Climate Change) and UNFCCC (United Nations Framework Convention on Climate Change) needs and considered feasible for global observation. ECVs data reco...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2012-07-01
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| Series: | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-7/315/2012/isprsannals-I-7-315-2012.pdf |
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| author | W. Wagner W. Dorigo R. de Jeu D. Fernandez J. Benveniste E. Haas M. Ertl |
| author_facet | W. Wagner W. Dorigo R. de Jeu D. Fernandez J. Benveniste E. Haas M. Ertl |
| author_sort | W. Wagner |
| collection | DOAJ |
| description | Soil moisture was recently included in the list of Essential Climate Variables (ECVs) that are deemed essential for IPCC (Intergovernmental Panel on Climate Change) and UNFCCC (United Nations Framework Convention on Climate Change) needs and considered feasible for global observation. ECVs data records should be as long, complete and consistent as possible, and in the case of soil moisture this means that the data record shall be based on multiple data sources, including but not limited to active (scatterometer) and passive (radiometer) microwave observations acquired preferably in the low-frequency microwave range. Among the list of sensors that can be used for this task are the C-band scatterometers on board of the ERS and METOP satellites and the multi-frequency radiometers SMMR, SSM/I, TMI, AMSR-E, and Windsat. Together, these sensors already cover a time period of more than 30 years and the question is how can observations acquired by these sensors be merged to create one consistent data record? This paper discusses on a high-level possible approaches for fusing the individual satellite data. It is argued that the best possible approach for the fusion of the different satellite data sets is to merge Level 2 soil moisture data derived from the individual satellite data records. This approach has already been demonstrated within the WACMOS project (http://wacmos.itc.nl/) funded by European Space Agency (ESA) and will be further improved within the Climate Change Initiative (CCI) programme of ESA (http://www.esa-cci.org/). |
| first_indexed | 2024-12-23T11:57:58Z |
| format | Article |
| id | doaj.art-9a038cbfc65f4c09b82ff7f90f2a51dc |
| institution | Directory Open Access Journal |
| issn | 2194-9042 2194-9050 |
| language | English |
| last_indexed | 2024-12-23T11:57:58Z |
| publishDate | 2012-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj.art-9a038cbfc65f4c09b82ff7f90f2a51dc2022-12-21T17:48:01ZengCopernicus PublicationsISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences2194-90422194-90502012-07-01I-731532110.5194/isprsannals-I-7-315-2012FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTUREW. Wagner0W. Dorigo1R. de Jeu2D. Fernandez3J. Benveniste4E. Haas5M. Ertl6Vienna University of Technology, Institute of Photogrammetry and Remote Sensing, Gusshausstrasse 27-29, 1040 Wien, AustriaVienna University of Technology, Institute of Photogrammetry and Remote Sensing, Gusshausstrasse 27-29, 1040 Wien, AustriaVrije Universiteit Amsterdam, Department of Hydrology and Geo-environmental Sciences, De Boelelaan 1085 1081 HV Amsterdam, The NetherlandsEuropean Space Agency, ESA-ESRIN, Via Galileo Galilei, 00044 Frascati, ItalyEuropean Space Agency, ESA-ESRIN, Via Galileo Galilei, 00044 Frascati, ItalyGeoVille Information Systems, Sparkassenplatz 2, 6020 Innsbruck, AustriaAngewandte Wissenschaft Software und Technologie, Mariahilfer Strasse 47/3/1, 1060 Vienna, AustriaSoil moisture was recently included in the list of Essential Climate Variables (ECVs) that are deemed essential for IPCC (Intergovernmental Panel on Climate Change) and UNFCCC (United Nations Framework Convention on Climate Change) needs and considered feasible for global observation. ECVs data records should be as long, complete and consistent as possible, and in the case of soil moisture this means that the data record shall be based on multiple data sources, including but not limited to active (scatterometer) and passive (radiometer) microwave observations acquired preferably in the low-frequency microwave range. Among the list of sensors that can be used for this task are the C-band scatterometers on board of the ERS and METOP satellites and the multi-frequency radiometers SMMR, SSM/I, TMI, AMSR-E, and Windsat. Together, these sensors already cover a time period of more than 30 years and the question is how can observations acquired by these sensors be merged to create one consistent data record? This paper discusses on a high-level possible approaches for fusing the individual satellite data. It is argued that the best possible approach for the fusion of the different satellite data sets is to merge Level 2 soil moisture data derived from the individual satellite data records. This approach has already been demonstrated within the WACMOS project (http://wacmos.itc.nl/) funded by European Space Agency (ESA) and will be further improved within the Climate Change Initiative (CCI) programme of ESA (http://www.esa-cci.org/).http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-7/315/2012/isprsannals-I-7-315-2012.pdf |
| spellingShingle | W. Wagner W. Dorigo R. de Jeu D. Fernandez J. Benveniste E. Haas M. Ertl FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE |
| title_full | FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE |
| title_fullStr | FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE |
| title_full_unstemmed | FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE |
| title_short | FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE |
| title_sort | fusion of active and passive microwave observations to create an essential climate variable data record on soil moisture |
| url | http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-7/315/2012/isprsannals-I-7-315-2012.pdf |
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