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dc.contributor.author
Alibakhshi, Sara
dc.contributor.author
Naimi, Babak
dc.contributor.author
Hovi, Aarne
dc.contributor.author
Crowther, Thomas W.
dc.contributor.author
Rautiainen, Miina
dc.date.accessioned
2020-05-22T09:40:55Z
dc.date.available
2020-05-22T02:33:49Z
dc.date.available
2020-05-22T09:40:55Z
dc.date.issued
2020-09-01
dc.identifier.issn
0034-4257
dc.identifier.other
10.1016/j.rse.2020.111854
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/416241
dc.identifier.doi
10.3929/ethz-b-000416241
dc.description.abstract
Forests are critical in regulating climate by altering the Earth's surface albedo. Therefore, there is an urgent need to enhance our knowledge about the effects of forest structure on albedo. Here, we present a global assessment of the links between forest structure and albedo at a 1-km spatial resolution using generalized additive models (GAMs). We used remotely sensed data to obtain variables representing forest structure, including forest density, leaf area index, and tree cover, during the peak growing season in 2005 with pure forest pixels that cover ~7% of the Earth's surface. Furthermore, we estimated black-sky albedo at a solar zenith angle of 38° using the most recent collection of the moderate resolution imaging spectroradiometer (MODIS; version 6) at shortwave, near-infrared, and visible spectral regions. In addition, for the first time, we mapped the magnitude of the relationship between forest structure and albedo at each pixel with a 0.5-degree spatial resolution. Our results suggested that forest structure may modulate albedo in most of the sub-biomes. The response of shortwave albedo was always positive to the leaf area index and negative to the tree cover (except for deciduous broadleaf forests in mediterranean and temperate regions), while the response to forest density varied across space in 2005. The spatial map affirmed that the links between forest structure and albedo vary over geographical locations. In sum, our study emphasized the importance of forest structure in the surface albedo regulation. This paper provides the first spatially explicit evidence of the magnitude of relationships between forest structure and albedo on a global scale.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Albedo
en_US
dc.subject
Forest structure
en_US
dc.subject
Forest density
en_US
dc.subject
Tree cover
en_US
dc.subject
Leaf area index
en_US
dc.title
Quantitative analysis of the links between forest structure and land surface albedo on a global scale
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-05-18
ethz.journal.title
Remote Sensing of Environment
ethz.journal.volume
246
en_US
ethz.journal.abbreviated
Remote Sens. Environ.
ethz.pages.start
111854
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York, NY
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::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::09625 - Crowther, Thomas Ward / Crowther, Thomas Ward
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::09625 - Crowther, Thomas Ward / Crowther, Thomas Ward
ethz.relation.isReferencedBy
10.3929/ethz-b-000450969
ethz.date.deposited
2020-05-22T02:33:56Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-05-22T09:41:07Z
ethz.rosetta.lastUpdated
2021-02-15T11:08:38Z
ethz.rosetta.versionExported
true
ethz.COinS
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