Thermal remote sensing in the framework of the SEN2FLEX project: field measurements, airborne data and applications

Sobrino, José A.; Jiménez-Muñoz, Juan C.; Sòria, G.; Gómez, M.; Ortiz, Amparo; Romaguera, M.; Zaragoza, M. M.; Julien, Y.; Cuenca, Javier; Atitar, M.; Hidalgo, Vanesa; Franch, B.; Mattar, Cristián; Ruescas, Ana B.; Morales, Luis; Gillespie, A. R.; Balick, Lee K.; Su, Zhongbo; Nerry, Françoise; Peres, Leonardo F.; Libonati, Renata

doi:10.1080/01431160802036516

Cited by 54 publications

(40 citation statements)

References 16 publications

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“…Sobrino et al, 2008;Su et al, 2008;Timmermans, 2008b, c), the knowledge of bio-geophysical parameter retrieval from multi-parameter optical, thermal and microwave data and the ability of direct modeling of the underlying physical processes in forests and grassland remain challenging due to lack of appropriate observation data in humid climate. In EAGLE2006 an intensive filed campaign was conducted using different airborne instruments -an optical imaging sensor, an imaging microwave radiometer, and a flux airplane -for data acquisition and to collect extensive ground measurements simultaneously over one grassland site and two forest sites in addition to acquisition of multi-angle and multi-sensor satellite data.…”

Section: Campaign Overviewmentioning

confidence: 99%

EAGLE 2006 – Multi-purpose, multi-angle and multi-sensor in-situ and airborne campaigns over grassland and forest

Su¹,

Timmermans²,

Tol³

et al. 2009

Hydrol. Earth Syst. Sci.

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Abstract. EAGLE2006 -an intensive field campaign for the advances in land surface hydrometeorological processes -was carried out in the Netherlands from 8th to 18th June 2006, involving 16 institutions with in total 67 people from 16 different countries. In addition to the acquisition of multiangle and multi-sensor satellite data, several airborne instruments -an optical imaging sensor, an imaging microwave radiometer, and a flux airplane -were deployed and extensive Correspondence to: Z. Su (b su@itc.nl) ground measurements were conducted over one grassland site at Cabauw and two forest sites at Loobos and Speulderbos in the central part of the Netherlands. The generated data set is both unique and urgently needed for the development and validation of models and inversion algorithms for quantitative land surface parameter estimation and land surface hydrometeorological process studies. EAGLE2006 was led by the Department of Water Resources of the International Institute for Geo-Information Science and Earth Observation (ITC) and originated from the combination of a number of initiatives supported by different funding agencies. The objectives of the EAGLE2006 campaign were closely Published by Copernicus Publications on behalf of the European Geosciences Union. 834 Z. Su et al.: EAGLE 2006 -Multi-purpose, multi-angle and multi-sensor in-situ and airborne campaigns related to the objectives of other European Space Agency (ESA) campaign activities (SPARC2004, SEN2FLEX2005 and especially AGRISAR2006). However, one important objective of the EAGLE2006 campaign is to build up a data base for the investigation and validation of the retrieval of bio-geophysical parameters, obtained at different radar frequencies (X-, C-and L-Band) and at hyperspectral optical and thermal bands acquired simultaneously over contrasting vegetated fields (forest and grassland). As such, all activities were related to algorithm development for future satellite missions such as the Sentinels and for validation of retrievals of land surface parameters with optical and thermal and microwave sensors onboard current and future satellite missions. This contribution describes the campaign objectives and provides an overview of the airborne and field campaign dataset. This dataset is available for scientific investigations and can be accessed on the ESA Principal Investigator Portal http://eopi.esa.int.

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Section: Campaign Overviewmentioning

confidence: 99%

EAGLE 2006 – Multi-purpose, multi-angle and multi-sensor in-situ and airborne campaigns over grassland and forest

Su¹,

Timmermans²,

Tol³

et al. 2009

Hydrol. Earth Syst. Sci.

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“…However, due to the decrease in vegetation greenness during summer, increasing of the soil proportion, and decreasing of the emissivity values. Other emissivity values computed in previous works related to remote sensing experiences were used [35][36][37][38]. To estimate the downwelling atmospheric irradiance, the Ldown is measured in the 3.0-120.0 µm by the four-band net radiometer, although it is necessary to adapt it to the 8.0-14.0 µm thermal window to match with the thermal radiometer.…”

Section: In Situ Land Surface Temperaturementioning

confidence: 99%

The LAB-Net Soil Moisture Network: Application to Thermal Remote Sensing and Surface Energy Balance

Mattar

Santamaría-Artigas

Durán‐Alarcón

et al. 2016

Data

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A set of Essential Climate Variables (ECV) have been defined to be monitored by current and new remote sensing missions. The ECV retrieved at global scale need to be validated in order to provide reliable products to be used in remote sensing applications. For this, test sites are required to use in calibration and validation of the remote sensing approaches in order to improve the ECV retrievals at global scale. The southern hemisphere presents scarce test sites for calibration and validation field campaigns that focus on soil moisture and land surface temperature retrievals. In Chile, remote sensing applications related to soil moisture estimates have increased during the last decades because of the drought and water use conflicts that generate a strong interest on improved water demand estimates. This work describes the Laboratory for Analysis of the Biosphere (LAB)-NETwork, called herein after 'LAB-net', which was designed to be the first network in Chile for remote sensing applications. The test sites were placed in four sites with different cover types: vineyards and olive orchards located in the semi-arid region of Atacama, an irrigated raspberry crop in the Mediterranean climate zone of Chimbarongo, and a rainfed pasture in the south of Chile. Over each site, well implemented meteorological and radiative flux instrumentation was installed and continuously recorded the following parameters: soil moisture and temperature at two ground levels (10 and 20 cm), air temperature and relative humidity, net radiation, global radiation, radiometric temperature (8-14 µm), rainfall and soil heat flux. The LAB-net data base post-processing procedure is also described here. As an application, surface remote sensing products such as soil moisture data derived from the Soil Moisture Ocean Salinity (SMOS) and Land Surface Temperature (LST) extracted from the MODIS-MOD11A1 and GOES LST from Copernicus products were compared to in situ data in Oromo LAB-net site. Moreover, land surface energy flux estimation is also shown as an application of LAB-net data base. These applications revealed a good performance between in situ and remote sensing data. LAB-net data base also contributes to provide suitable information for land surface energy budget and therefore water resources management at cultivars scale. The data based generated by LAB-net is freely available for any research or scientific purpose related to current and future remote sensing applications.

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“…Land surface temperature values are obtained with TES method (Gillespie et al, 1998) and these results are reported in (Sobrino et al, 2008). This heterogeneous agricultural area can be characterized from a thermodynamic point of view only with high resolution images.…”

Section: Land Surface Temperature Retrieved From Ahsmentioning

confidence: 99%

“…1). Various instruments were used to measure in the TIR domain, including multiband and single-band radiometers with a fixed field-of-view (Sobrino et al, 2008).…”

Section: Thermal Radiometric Field Campaignmentioning

confidence: 99%

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Land surface temperature representativeness in a heterogeneous area through a distributed energy-water balance model and remote sensing data

Corbari

Sobrino

Mancini

et al. 2010

Hydrol. Earth Syst. Sci.

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Abstract. Land surface temperature is the link between soilvegetation-atmosphere fluxes and soil water content through the energy water balance. This paper analyses the representativeness of land surface temperature (LST) for a distributed hydrological water balance model (FEST-EWB) using LST from AHS (airborne hyperspectral scanner), with a spatial resolution between 2-4 m, LST from MODIS, with a spatial resolution of 1000 m, and thermal infrared radiometric ground measurements that are compared with the representative equilibrium temperature that closes the energy balance equation in the distributed hydrological model. Diurnal and nocturnal images are analyzed due to the non stable behaviour of the thermodynamic temperature and to the non linear effects induced by spatial heterogeneity.Spatial autocorrelation and scale of fluctuation of land surface temperature from FEST-EWB and AHS are analysed at different aggregation areas to better understand the scale of representativeness of land surface temperature in a hydrological process.The study site is the agricultural area of Barrax (Spain) that is a heterogeneous area with a patchwork of irrigated and non irrigated vegetated fields and bare soil. The used data set was collected during a field campaign from 10 to 15 July 2005 in the framework of the SEN2FLEX project.

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Thermal remote sensing in the framework of the SEN2FLEX project: field measurements, airborne data and applications

Cited by 54 publications

References 16 publications

EAGLE 2006 – Multi-purpose, multi-angle and multi-sensor in-situ and airborne campaigns over grassland and forest

EAGLE 2006 – Multi-purpose, multi-angle and multi-sensor in-situ and airborne campaigns over grassland and forest

The LAB-Net Soil Moisture Network: Application to Thermal Remote Sensing and Surface Energy Balance

Land surface temperature representativeness in a heterogeneous area through a distributed energy-water balance model and remote sensing data

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