Journal article

Homogeneity of a global multisatellite soil moisture climate data record

Chun-Hsu Su, Dongryeol Ryu, Wouter Dorigo, Simon Zwieback, Alexander Gruber, Clement Albergel, Rolf H Reichle, Wolfgang Wagner

Geophysical Research Letters | AMER GEOPHYSICAL UNION | Published : 2016

Abstract

Climate Data Records (CDR) that blend multiple satellite products are invaluable for climate studies, trend analysis and risk assessments. Knowledge of any inhomogeneities in the CDR is therefore critical for making correct inferences. This work proposes a methodology to identify the spatiotemporal extent of the inhomogeneities in a 36 year, global multisatellite soil moisture CDR as the result of changing observing systems. Inhomogeneities are detected at up to 24% of the tested pixels with spatial extent varying with satellite changeover times. Nevertheless, the contiguous periods without inhomogeneities at changeover times are generally longer than 10 years. Although the inhomogeneities h..

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University of Melbourne Researchers

Grants

Awarded by ESA CCI Programme "Phase 2 of the ESA CCI SM ECV"


Funding Acknowledgements

This research is supported by The University of Melbourne Early Career Researcher Grant Scheme, and the ESA CCI Programme "Phase 2 of the ESA CCI SM ECV" (contract no. 4000112226/14/I-NB). WD is supported by the personal grant "TU Wien Wissenschaftspreis 2015". The ESA CCI SM and ISMN data were obtained freely from http://www.esa-soilmoisture-cci.org and https://ismn.geo.tuwien.ac.at, respectively, and the MERRA-Land data were from http://disc.sci.gsfc.nasa.gov/mdisc.