Article (Scientific journals)
Daily evapotranspiration at sub-kilometre spatial resolution by combining observations from geostationary and polar-orbit satellites
Barrios, J.M.; Ghilain, Nicolas; Arboleda, A. et al.
2018 • In International Journal of Remote Sensing, 39 (23), p. 8984 - 9003
Peer Reviewed verified by ORBi
 

Files


Full Text
Daily evapotranspiration at sub-kilometre spatial resolution by combining observations from geostationary and polar-orbit satellites.pdf
Author postprint (4.16 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Daily evapotranspirations; Earth observation data; High temporal resolution; Methodological approach; Root mean square errors; Satellite application facilities; Spaceborne observations; Spatial and temporal resolutions; Earth and Planetary Sciences (all)
Abstract :
[en] Evapotranspiration (ET) estimates based on remote sensing are constrained by the spatial and temporal resolution of spaceborne observations. Therefore, the choice to be made is whether modelling at high temporal resolution with geostationary satellites at the cost of the spatial detail, or spatially detailed instantaneous modelling at overpass-time with polar-orbit satellites. This study aimed at exploiting the strength of both modelling approaches and derive daily ET estimates with cell size ≤ 1.0 km. The study was conducted in four sites with different land cover arrangements and catalogued as wetlands. The methodological approach was based on the algorithm behind the operational ET product of the Satellite Application Facility on Land Surface Analysis (LSA-SAF) initiative. The examined period comprised the end of the Spot-Végétation (Spot-V) mission and the first year of Proba-V operational modus. Two aspects were investigated: 1. The adequacy of combining observations from geostationary and Spot-V and Proba-V satellite missions for obtaining the target product; and, 2. The intercompatibility of ET estimates based on Spot-V and Proba-V so that continuous series over the operational period of both missions could be built. The comparison of simulated ET with in situ measured fluxes (eddy covariance) showed that the introduction of more spatial detail through polar-satellite observations resulted in the reduction of bias and root-mean-square error in ET estimates, as compared with estimations where Earth observation data were taken from geostationary satellites only. Moreover, the signals derived from Spot-V and Proba-V exhibited similarity during the period of operational overlap; especially in non-cultivated surfaces. This suggests that continuity objective of these two missions can be exploited in the estimation of ET time series.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Barrios, J.M.;  Department of Meteorological and Climatological Research, Royal Meteorological Institute of Belgium, Uccle, Belgium
Ghilain, Nicolas  ;  Université de Liège - ULiège > Sphères ; Department of Meteorological and Climatological Research, Royal Meteorological Institute of Belgium, Uccle, Belgium
Arboleda, A.;  Department of Meteorological and Climatological Research, Royal Meteorological Institute of Belgium, Uccle, Belgium
Sachs, T.;  Section Remote Sensing, GFZ German Research Centre for Geosciences, Potsdam, Germany
Gellens-Meulenberghs, F.;  Department of Meteorological and Climatological Research, Royal Meteorological Institute of Belgium, Uccle, Belgium
Language :
English
Title :
Daily evapotranspiration at sub-kilometre spatial resolution by combining observations from geostationary and polar-orbit satellites
Publication date :
02 December 2018
Journal title :
International Journal of Remote Sensing
ISSN :
0143-1161
eISSN :
1366-5901
Publisher :
Taylor and Francis Ltd.
Volume :
39
Issue :
23
Pages :
8984 - 9003
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - Belgian Federal Science Policy Office
Funding text :
The research pertaining to these results received financial aid from the Belgian Federal Science Policy according to the agreement of subsidy no. [SR/01/301] under the STEREO III programme. We acknowledge the managers and scientific staff of the measurement sites Anklam, Spreewald, Schechenfilz Nord and Zarnekow for providing flux data.
Available on ORBi :
since 23 February 2026

Statistics


Number of views
60 (0 by ULiège)
Number of downloads
51 (0 by ULiège)

Scopus citations®
 
2
Scopus citations®
without self-citations
1
OpenAlex citations
 
2

Bibliography


Similar publications



Contact ORBi