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dc.contributor.author
Nicolai-Shaw, Nadine
dc.contributor.author
Zscheischler, Jakob
dc.contributor.author
Hirschi, Martin
dc.contributor.author
Gudmundsson, Lukas
dc.contributor.author
Seneviratne, Sonia I.
dc.date.accessioned
2018-04-27T10:33:32Z
dc.date.available
2017-06-30T08:23:08Z
dc.date.available
2017-06-30T10:15:15Z
dc.date.available
2018-04-27T10:33:32Z
dc.date.issued
2017-12-15
dc.identifier.issn
0034-4257
dc.identifier.other
10.1016/j.rse.2017.06.014
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/167365
dc.identifier.doi
10.3929/ethz-b-000167365
dc.description.abstract
Drought is a globally relevant hazard, and while various studies have investigated the relationship between droughts and different climate and ecosystem variables, they are often not global or they do not make use of direct soil moisture observations. Here we use satellite derived soil moisture observations from the Climate Change Initiative of the European Space Agency to quantify the relation between soil moisture drought and temperature, precipitation, evapotranspiration and vegetation during the peak of the growing season. Furthermore, we follow the temporal evolution of the buildup and recovery surrounding the drought peak. We find that in many regions longer-term precipitation deficits are the driving factors of large negative soil moisture anomalies. At the peak of the dry period large anomalies are found for precipitation, evapotranspiration, and temperature, while vegetation indices often show a delayed response. This delay is likely related to the limited information contained in the remotely sensed soil moisture signal on the deeper root zone, thus underestimating the available soil moisture for plants. Anomalies over grasslands are generally larger than over forests, likely linked to the ability of trees to better access water at deeper depths, and to save water during dry conditions. These results illustrate the relevance of remote-sensing based soil moisture as a new independent observation for studying land-vegetation-atmosphere dynamics at the global scale.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier BV
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Drought event composites
en_US
dc.subject
Satellite derived soil moisture
en_US
dc.subject
ESA Climate Change Initiative (CCI)
en_US
dc.subject
Land cover
en_US
dc.title
A drought event composite analysis using satellite remote-sensing based soil moisture
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2017-06-17
ethz.journal.title
Remote Sensing of Environment
ethz.journal.volume
203
en_US
ethz.journal.abbreviated
Remote sens. environ.
ethz.pages.start
216
en_US
ethz.pages.end
225
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science::03778 - Seneviratne, Sonia / Seneviratne, Sonia
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science::03778 - Seneviratne, Sonia / Seneviratne, Sonia
en_US
ethz.date.deposited
2017-06-30T08:23:08Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-04-27T10:33:36Z
ethz.rosetta.lastUpdated
2018-11-06T21:40:09Z
ethz.rosetta.versionExported
true
ethz.COinS
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