The SMOS Mediterranean Ecosystem L-Band characterisation EXperiment (MELBEX-I) over natural shrubs

Cano, Antonio Rico; Saleh, Kauzar; Wigneron, Jean‐Pierre; Antolín, C.; Balling, Jan E.; Kerr, Yann H.; Kruszewski, Alain; Millan-Scheiding, Cristina; Søbjærg, Sten Schmidl; Skou, N.; López-Baeza, Ernesto

doi:10.1016/j.rse.2009.11.019

Cited by 33 publications

(14 citation statements)

References 24 publications

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“…A number of field experiments (CoSMOS, SMOSREX, VAS, MELBEX-1, ELBARA-ETH) (Saleh et al, , 2009Cano et al, 2010) were carried out in order to prepare the SMOS mission. In addition, several airborne campaigns were performed to assess SSM retrieval over large areas: EuroSTARRS in France and Spain (Saleh et al, 2004), NAFE/CoSMOS in Australia (Panciera et al, 2008), EA-GLE2006 in Germany (Su et al, 2009), HOBE in Denmark (Bircher et al, 2012).…”

mentioning

confidence: 99%

Spatial and temporal variability of biophysical variables in southwestern France from airborne L-band radiometry

Zakharova¹,

Calvet²,

Lafont³

et al. 2012

Hydrol. Earth Syst. Sci.

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mentioning

confidence: 99%

Spatial and temporal variability of biophysical variables in southwestern France from airborne L-band radiometry

Zakharova¹,

Calvet²,

Lafont³

et al. 2012

Hydrol. Earth Syst. Sci.

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“…The focus of the European experimental sites is limited to a single SMOS pixel and/or a single airborne transect through several SMOS pixels, with repeat flights over a given time period: e.g., SMOSREX (de Rosnay et al, 2006), MEL-BEX (Cano et al, 2008(Cano et al, , 2010, and EuroSTARRS (Saleh et al, 2004). In contrast, the field campaigns described in this paper, named Australian Airborne Cal/val Experiments for SMOS (AACES), were designed to provide an extensive validation dataset by completely covering a minimum of 20 independent (≈40 overlapping) SMOS pixels, which correspond to a study area of approximately 50 000 km 2 (Fig.…”

Section: Published By Copernicus Publications On Behalf Of the Europementioning

confidence: 99%

The AACES field experiments: SMOS calibration and validation across the Murrumbidgee River catchment

Peischl

Walker

Rüdiger

et al. 2012

Hydrol. Earth Syst. Sci.

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Abstract. Following the launch of the European SpaceAgency's Soil Moisture and Ocean Salinity (SMOS) mission on 2 November 2009, SMOS soil moisture products need to be rigorously validated at the satellite's approximately 45 km scale and disaggregation techniques for producing maps with finer resolutions tested. The Australian Airborne Cal/val Experiments for SMOS (AACES) provide the basis for one of the most comprehensive assessments of SMOS data worldwide by covering a range of topographic, climatic and land surface variability within an approximately 500 × 100 km 2 study area, located in South-East Australia. The AACES calibration and validation activities consisted of two extensive field experiments which were undertaken across the Murrumbidgee River catchment during the Australian summer and winter season of 2010, respectively. The datasets include airborne L-band brightness temperature, thermal infrared and multi-spectral observations at 1 km resolution, as well as extensive ground measurements of near-surface soil moisture and ancillary data, such as soil temperature, soil texture, surface roughness, vegetation water content, dew amount, leaf area index and spectral characteristics of the vegetation. This paper explains the design and data collection strategy of the airborne and ground component of the two AACES campaigns and presents a preliminary analysis of the field measurements including the application and performance of the SMOS core retrieval model on the diverse land surface conditions captured by the experiments.

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“…The first campaign, Melbex 1 (39.553 • N, 1.273 • W), was carried out between June 2005 and January 2006 to observe the surface emission of Mediterranean shrubs (Cano et al, 2010). The soil was characterized as sandy, with a soil texture composed of 47% sand, 38% silt and 15% clay.…”

Section: In Situ Measurementsmentioning

confidence: 99%

Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station

Juglea

Kerr

Mialon

et al. 2010

Hydrol. Earth Syst. Sci.

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Abstract. The main goal of the SMOS (Soil Moisture andOcean Salinity) mission is to deliver global fields of surface soil moisture and sea surface salinity using L-band (1.4 GHz) radiometry. Within the context of the Science preparation for SMOS, the Valencia Anchor Station (VAS) experimental site, in Spain, was chosen to be one of the main test sites in Europe for Calibration/Validation (Cal/Val) activities. In this framework, the paper presents an approach consisting in accurately simulating a whole SMOS pixel by representing the spatial and temporal heterogeneity of the soil moisture fields over the wide VAS surface (50×50 km 2 ). Ground and meteorological measurements over the area are used as the input of a Soil-Vegetation-Atmosphere-Transfer (SVAT) model, SURFEX (Externalized Surface) -module ISBA (Interactions between Soil-Biosphere-Atmosphere) to simulate the spatial and temporal distribution of surface soil moisture. The calibration as well as the validation of the ISBA model are performed using in situ soil moisture measurements. It is shown that a good consistency is reached when point comparisons between simulated and in situ soil moisture measurements are made.Actually, an important challenge in remote sensing approaches concerns product validation. In order to obtain an representative soil moisture mapping over the Valencia Anchor Station (50×50 km 2 area), a spatialization method is

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The SMOS Mediterranean Ecosystem L-Band characterisation EXperiment (MELBEX-I) over natural shrubs

Cited by 33 publications

References 24 publications

Spatial and temporal variability of biophysical variables in southwestern France from airborne L-band radiometry

Spatial and temporal variability of biophysical variables in southwestern France from airborne L-band radiometry

The AACES field experiments: SMOS calibration and validation across the Murrumbidgee River catchment

Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station

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