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Evaporative fluxes and surface soil moisture retrievals in a Mediterranean setting from Sentinel‐3 and the “Simplified Triangle”

Petropoulos Georgios, Sandric Ionut, Christopoulos Dionysios, Carlson Toby N.

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URIhttp://purl.tuc.gr/dl/dias/F2432851-4746-4938-8250-CDDDBF0DCFE0-
Αναγνωριστικόhttps://doi.org/10.3390/rs12193192-
Αναγνωριστικόhttps://www.mdpi.com/2072-4292/12/19/3192-
Γλώσσαen-
Μέγεθος18 pagesen
ΤίτλοςEvaporative fluxes and surface soil moisture retrievals in a Mediterranean setting from Sentinel‐3 and the “Simplified Triangle”en
ΔημιουργόςPetropoulos Georgiosen
ΔημιουργόςΠετροπουλος Γεωργιοςel
ΔημιουργόςSandric Ionuten
ΔημιουργόςChristopoulos Dionysiosen
ΔημιουργόςΧριστοπουλος Διονυσιοςel
ΔημιουργόςCarlson Toby N.en
ΕκδότηςMDPIen
ΠερίληψηEarth Observation (EO) makes it possible to obtain information on key parameters characterizing interactions among Earth’s system components, such as evaporative fraction (EF) and surface soil moisture (SSM). Notably, techniques utilizing EO data of land surface temperature (Ts) and vegetation index (VI) have shown promise in this regard. The present study investigates, for the first time, the accuracy of one such technique, known as the “simplified triangle”, using Sentinel‐3 EO data, acquired for 44 days in 2018 at three savannah FLUXNET sites in Spain. The technique was found to be able to predict both EF and SSM with reasonable accuracy when compared to collocated ground measurements. Comparisons performed for all days together showed relatively low Root Mean square Difference (RMSD) for both EF (0.191) and SSM (0.012 cm3 cm−3) and good correlation coefficients (R) of 0.721 and 0.577, respectively. Both EF and SSM were also largely in agreement with land cover and seasonal variability. The present study comprises the first detailed assessment of the “simplified triangle”, in this case, using Sentinel‐3 data and in a Mediterranean setting. Findings, albeit preliminary, are of significant value regarding the use of the investigated technique as a tool of environmental management, and towards ongoing, worldwide efforts aiming at developing operationally relevant products based on the Ts/VI feature space and EO data based on new satellites such as Sentinel‐3.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2020-10-02-
Ημερομηνία Δημοσίευσης2020-
Θεματική ΚατηγορίαEarth observationen
Θεματική ΚατηγορίαSentinel-3en
Θεματική ΚατηγορίαSurface soil moistureen
Θεματική ΚατηγορίαEvaporative fractionen
Θεματική ΚατηγορίαSimplified triangleen
Θεματική ΚατηγορίαTs/VI domainen
Θεματική ΚατηγορίαCarboEuropeen
Βιβλιογραφική ΑναφοράG.P. Petropoulos, I. Sandric, D. Hristopulos and T.N. Carlson, "Evaporative fluxes and surface soil moisture retrievals in a Mediterranean setting from Sentinel‐3 and the “Simplified Triangle,” Remote Sens., vol. 12, no. 19, Sep. 2020. doi: 10.3390/rs12193192en

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