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  • Yao, YunjunBeijing Normal University (author)

Estimation of high-resolution terrestrial evapotranspiration from Landsat data using a simple Taylor skill fusion method

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • Elsevier BV,2017
  • 19 s.

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:7005d4b2-a988-4cd1-8176-e4c0f0ad9a7b
  • https://lup.lub.lu.se/record/7005d4b2-a988-4cd1-8176-e4c0f0ad9a7bURI
  • https://doi.org/10.1016/j.jhydrol.2017.08.013DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Estimation of high-resolution terrestrial evapotranspiration (ET) from Landsat data is important in many climatic, hydrologic, and agricultural applications, as it can help bridging the gap between existing coarse-resolution ET products and point-based field measurements. However, there is large uncertainty among existing ET products from Landsat that limit their application. This study presents a simple Taylor skill fusion (STS) method that merges five Landsat-based ET products and directly measured ET from eddy covariance (EC) to improve the global estimation of terrestrial ET. The STS method uses a weighted average of the individual ET products and weights are determined by their Taylor skill scores (S). The validation with site-scale measurements at 206 EC flux towers showed large differences and uncertainties among the five ET products. The merged ET product exhibited the best performance with a decrease in the averaged root-mean-square error (RMSE) by 2–5 W/m2 when compared to the individual products. To evaluate the reliability of the STS method at the regional scale, the weights of the STS method for these five ET products were determined using EC ground-measurements. An example of regional ET mapping demonstrates that the STS-merged ET can effectively integrate the individual Landsat ET products. Our proposed method provides an improved high-resolution ET product for identifying agricultural crop water consumption and providing a diagnostic assessment for global land surface models.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Liang, ShunlinBeijing Normal University (author)
  • Li, XianglanBeijing Normal University (author)
  • Zhang, YuhuCapital Normal University (author)
  • Chen, JiquanMichigan State University (author)
  • Jia, KunBeijing Normal University (author)
  • Zhang, XiaotongBeijing Normal University (author)
  • Fisher, Joshua B.California Institute of Technology (author)
  • Wang, XuanyuBeijing Normal University (author)
  • Zhang, LilinBeijing Normal University (author)
  • Xu, JiaBeijing Normal University (author)
  • Shao, ChangliangMichigan State University (author)
  • Posse, GabrielaNational Institute of Agricultural Technology (INTA) (author)
  • Li, YingnianNorthwest Institute of Plateau Biology, CAS (author)
  • Magliulo, VincenzoCNR Institute for Agricultural and Forestry Systems in the Mediterranean (CNR-ISAFOM) (author)
  • Varlagin, AndrejSevertsov Institute of Ecology and Evolution, Russian Academy of Sciences (author)
  • Moors, Eddy J.Wageningen University (author)
  • Boike, JuliaAlfred-Wegener Institute for Polar and Marine Research, Potsdam (author)
  • Macfarlane, CraigCSIRO Land & Water Flagship (author)
  • Kato, TomomichiHokkaido University (author)
  • Buchmann, NinaETH Zürich (author)
  • Billesbach, D. P.University of Nebraska - Lincoln (author)
  • Beringer, JasonUniversity of Western Australia, Crawley (author)
  • Wolf, SebastianETH Zürich (author)
  • Papuga, Shirley A.University of Arizona (author)
  • Wohlfahrt, GeorgUniversity of Innsbruck (author)
  • Montagnani, LeonardoFree University of Bozen-Bolzano (author)
  • Ardö, JonasLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)natg-jar (author)
  • Paul-Limoges, EugénieETH Zürich (author)
  • Emmel, CarmenETH Zürich (author)
  • Hörtnagl, LukasETH Zürich (author)
  • Sachs, TorstenGFZ German Research Centre for Geosciences (author)
  • Gruening, CarstenEuropean Commission Joint Research Centre, Ispra (author)
  • Gioli, BeniaminoCNR Institute of Biometeorology (CNR-IBIMET) (author)
  • López-Ballesteros, AnaUniversity of Granada (author)
  • Steinbrecher, RainerKarlsruhe Institute of Technology (author)
  • Gielen, BertUniversity of Antwerp (author)
  • Beijing Normal UniversityCapital Normal University (creator_code:org_t)

Related titles

  • In:Journal of Hydrology: Elsevier BV553, s. 508-5260022-1694

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