URI | http://purl.tuc.gr/dl/dias/F2432851-4746-4938-8250-CDDDBF0DCFE0 | - |
Identifier | https://doi.org/10.3390/rs12193192 | - |
Identifier | https://www.mdpi.com/2072-4292/12/19/3192 | - |
Language | en | - |
Extent | 18 pages | en |
Title | Evaporative fluxes and surface soil moisture retrievals in a Mediterranean setting from Sentinel‐3 and the “Simplified Triangle” | en |
Creator | Petropoulos Georgios | en |
Creator | Πετροπουλος Γεωργιος | el |
Creator | Sandric Ionut | en |
Creator | Christopoulos Dionysios | en |
Creator | Χριστοπουλος Διονυσιος | el |
Creator | Carlson Toby N. | en |
Publisher | MDPI | en |
Content Summary | Earth 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 |
Type of Item | Peer-Reviewed Journal Publication | en |
Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
License | http://creativecommons.org/licenses/by/4.0/ | en |
Date of Item | 2020-10-02 | - |
Date of Publication | 2020 | - |
Subject | Earth observation | en |
Subject | Sentinel-3 | en |
Subject | Surface soil moisture | en |
Subject | Evaporative fraction | en |
Subject | Simplified triangle | en |
Subject | Ts/VI domain | en |
Subject | CarboEurope | en |
Bibliographic Citation | G.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/rs12193192 | en |