L-Band radiative properties of vine vegetation at the MELBEX III SMOS Cal/Val Site

M. Schwank; J.-P. Wigneron; E. Lopez-Baeza; I. Völksch; C. Matzler; Y.H. Kerr

HAL: ird-00701178, version 1

DOI: 10.1109/TGRS.2012.2184126

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L-Band radiative properties of vine vegetation at the MELBEX III SMOS Cal/Val Site
Schwank M., Wigneron J.-P., Lopez-Baeza E., Völksch I., Matzler C., Kerr Y.H.
IEEE Transactions on Geoscience and Remote Sensing 50, 5 (2012) 1587-1601 - http://hal.ird.fr/ird-00701178

publication format:

Article in peer-reviewed journal

subject:

Life Sciences/Ecology, environment/Ecosystems

title:

L-Band radiative properties of vine vegetation at the MELBEX III SMOS Cal/Val Site

author(s):

M. Schwank (

) ¹, J.-P. Wigneron (

) ², E. Lopez-Baeza ³, I. Völksch ⁴, C. Matzler ⁵, Y.H. Kerr (

) ⁶

laboratory:

1:	Geoecology and Geomorphology

	geoecology

	GFZ German Research centre for Geosciences 14473 Postdam Germany

	Germany

2:	Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263)

	Institut national de la recherche agronomique (INRA) : UR1263

	Service Forêt-Bois, Unité EPHYSE 33612 Cestas Cedex

	France

3:	Université de Valence

	University of Valencia

	Spain

4:	Institut Fédéral de Recherches sur la Forêt, la Neige et le Paysage (WSL)

	Institut Fédéral de Recherches [Suisse]

	Institut fédéral de recherches WSL Zürcherstrasse 111 CH-8903 Birmensdorf

	Switzerland

5:	Institute of Applied Physics (IAP)

	http://www.iap.unibe.ch/

	Université de Berne

	Université de Berne Sidlerstrasse 5 CH-3012 BERN

	Switzerland

6:	Centre d'études spatiales de la biosphère (CESBIO)

	http://www.cesbio.ups-tlse.fr

	CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

	bpi 2801 18 Av Edouard Belin 31401 TOULOUSE CEDEX 4

	France

abstract:

Radiative properties at 1.4 GHz of vine vegetation are investigated by measuring brightness temperatures with the ETH L-band Radiometer II (ELBARA II) operated on a tower at the Mediterranean Ecosystem L-band Characterisation Experiment III (MELBEX III) field site in Spain. To this aim, experiments with and without a reflecting foil placed under the vines were performed for the vegetation winter and summer states, respectively, to provide prevailingly information on vegetation transmissivities. The resulting parameters, which can be considered as "ground truth" for the MELBEX III vineyard, were retrieved from brightness temperature at horizontal and vertical polarization measured at observation angles between 30◦ and 60◦. These MELBEX III "ground-truth" values are representative for the Mediterranean Soil Moisture and Ocean Salinity (SMOS) Valencia Anchor Station (VAS) and therefore valuable for the corresponding calibration and validation activities over the VAS site. Likewise, quantifying the uncertainties of the measured brightness temperatures was also important, particularly as several equivalent ELBARA II instruments are currently operative in ongoing SMOS-related field campaigns.

fulltext language:

English

journal:

IEEE Transactions on Geoscience and Remote Sensing
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
ISSN	0196-2892

Audience:

not specified

publication date:

2012

volume:

issue:

page, identifiant, ...:

1587-1601

keyword(s):

Microwave radiometry – radiative transfer – soil moisture – vegetation mapping.

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PDF

Schwank.pdf

(1.6 MB)


ird-00701178, version 1
http://hal.ird.fr/ird-00701178
oai:hal.ird.fr:ird-00701178
From: Dominique Bruel <>
Submitted on: Thursday, 24 May 2012 16:41:33
Updated on: Tuesday, 29 May 2012 16:51:04