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  Brightness temperature validation at different scales during the SMOS validation campaign in the Rur and Erft catchments, Germany

Montzka, C., Bogena, H., Weihermüller, L., Jonard, F., Bouzinac, C., Kainulainen, J., et al. (2013). Brightness temperature validation at different scales during the SMOS validation campaign in the Rur and Erft catchments, Germany. IEEE Transactions on Geoscience and Remote Sensing, 51: 6261546, pp. 1728-1743. doi:10.1109/TGRS.2012.2206031.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000E-95D3-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-D8D2-D
Genre: Journal Article

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IEEETransGeosciRemSens-51-2013-1728.pdf (Publisher version), 3MB
 
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Copyright © 1980-2012 IEEE.
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Montzka, C., Author
Bogena, H., Author
Weihermüller, L., Author
Jonard, F., Author
Bouzinac, C., Author
Kainulainen, J., Author
Balling, J., Author
Loew, Alexander1, 2, Author           
DallAmico, J., Author
Rouhe, E., Author
Vanderborght, J., Author
Vereecken, H., Author
Affiliations:
1Terrestrial Remote Sensing / HOAPS, The Land in the Earth System, MPI for Meteorology, Max Planck Society, ou_913559              
2CRG Terrestrial Remote Sensing, Research Area A: Climate Dynamics and Variability, The CliSAP Cluster of Excellence, External Organizations, Bundesstraße 53, 20146 Hamburg, DE, ou_2025291              

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 Abstract: The European Space Agency's Soil Moisture and Ocean Salinity (SMOS) satellite was launched in November 2009 and delivers now brightness temperature and soil moisture products over terrestrial areas on a regular three-day basis. In 2010, several airborne campaigns were conducted to validate the SMOS products with microwave emission radiometers at L-band (1.4 GHz). In this paper, we present results from measurements performed in the Rur and Erft catchments in May and June 2010. The measurement sites were situated in the very west of Germany close to the borders to Belgium and The Netherlands. We developed an approach to validate spatial and temporal SMOS brightness temperature products. An area-wide brightness temperature reference was generated by using an area-wide modeling of top soil moisture and soil temperature with the WaSiM-ETH model and radiative transfer calculation based on the L-band Microwave Emission of the Biosphere model. Measurements of the airborne L-band sensors EMIRAD and HUT-2D on-board a Skyvan aircraft as well as ground-based mobile measurements performed with the truck mounted JÜLBARA L-band radiometer were analyzed for calibration of the simulated brightness temperature reference. Radiative transfer parameters were estimated by a data assimilation approach. By this versatile reference data set, it is possible to validate the spaceborne brightness temperature and soil moisture data obtained from SMOS. However, comparisons with SMOS observations for the campaign period indicate severe differences between simulated and observed SMOS data. Copyright © 1980-2012 IEEE.

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Language(s): eng - English
 Dates: 20122013-03
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1109/TGRS.2012.2206031
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Title: IEEE Transactions on Geoscience and Remote Sensing
Source Genre: Journal
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Pages: - Volume / Issue: 51 Sequence Number: 6261546 Start / End Page: 1728 - 1743 Identifier: ISSN: 1558-0644
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000223200_1