Show simple item record

dc.contributor.author
Stoy, Paul C.
dc.contributor.author
El-Madany, Tarek S.
dc.contributor.author
Fisher, Joshua B.
dc.contributor.author
Gentine, Pierre
dc.contributor.author
Gerken, Tobias
dc.contributor.author
Good, Stephen P.
dc.contributor.author
Klosterhalfen, Anne
dc.contributor.author
Liu, Shuguang
dc.contributor.author
Miralles, Diego G.
dc.contributor.author
Pérez-Priego, O.
dc.contributor.author
Rigden, Angela J.
dc.contributor.author
Skaggs, Todd H.
dc.contributor.author
Wohlfahrt, Georg
dc.contributor.author
Anderson, Ray G.
dc.contributor.author
Coenders-Gerrits, A. Miriam J.
dc.contributor.author
Jung, Martin
dc.contributor.author
Maes, Wouter H.
dc.contributor.author
Mammarella, Ivan
dc.contributor.author
Mauder, Matthias
dc.contributor.author
Migliavacca, Mirco
dc.contributor.author
Nelson, Jacob A.
dc.contributor.author
Poyatos, Rafael
dc.contributor.author
Reichstein, Markus
dc.contributor.author
Scott, Russell L.
dc.contributor.author
Wolf, Sebastian
dc.date.accessioned
2019-10-15T05:18:19Z
dc.date.available
2019-10-14T13:57:44Z
dc.date.available
2019-10-15T05:18:19Z
dc.date.issued
2019-10-01
dc.identifier.issn
1726-4170
dc.identifier.issn
1726-4170
dc.identifier.other
10.5194/bg-16-3747-2019
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/370418
dc.identifier.doi
10.3929/ethz-b-000370418
dc.description.abstract
Evaporation (E) and transpiration (T) respond differently to ongoing changes in climate, atmospheric composition, and land use. It is difficult to partition ecosystem-scale evapotranspiration (ET) measurements into E and T, which makes it difficult to validate satellite data and land surface models. Here, we review current progress in partitioning E and T and provide a prospectus for how to improve theory and observations going forward. Recent advancements in analytical techniques create new opportunities for partitioning E and T at the ecosystem scale, but their assumptions have yet to be fully tested. For example, many approaches to partition E and T rely on the notion that plant canopy conductance and ecosystem water use efficiency exhibit optimal responses to atmospheric vapor pressure deficit (D). We use observations from 240 eddy covariance flux towers to demonstrate that optimal ecosystem response to D is a reasonable assumption, in agreement with recent studies, but more analysis is necessary to determine the conditions for which this assumption holds. Another critical assumption for many partitioning approaches is that ET can be approximated as T during ideal transpiring conditions, which has been challenged by observational studies. We demonstrate that T can exceed 95 % of ET from certain ecosystems, but other ecosystems do not appear to reach this value, which suggests that this assumption is ecosystem-dependent with implications for partitioning. It is important to further improve approaches for partitioning E and T, yet few multi-method comparisons have been undertaken to date. Advances in our understanding of carbon–water coupling at the stomatal, leaf, and canopy level open new perspectives on how to quantify T via its strong coupling with photosynthesis. Photosynthesis can be constrained at the ecosystem and global scales with emerging data sources including solar-induced fluorescence, carbonyl sulfide flux measurements, thermography, and more. Such comparisons would improve our mechanistic understanding of ecosystem water fluxes and provide the observations necessary to validate remote sensing algorithms and land surface models to understand the changing global water cycle.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus Publications
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Reviews and syntheses: Turning the challenges of partitioning ecosystem evaporation and transpiration into opportunities
en_US
dc.type
Review Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Biogeosciences
ethz.journal.volume
16
en_US
ethz.journal.issue
19
en_US
ethz.pages.start
3747
en_US
ethz.pages.end
3775
en_US
ethz.size
29 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Göttingen
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::02722 - Institut für Terrestrische Oekosysteme / Institute of Terrestrial Ecosystems::03798 - Kirchner, James W. / Kirchner, James W.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02722 - Institut für Terrestrische Oekosysteme / Institute of Terrestrial Ecosystems::03798 - Kirchner, James W. / Kirchner, James W.
en_US
ethz.date.deposited
2019-10-14T13:57:54Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-10-15T05:18:44Z
ethz.rosetta.lastUpdated
2021-02-15T06:15:45Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Reviews%20and%20syntheses:%20Turning%20the%20challenges%20of%20partitioning%20ecosystem%20evaporation%20and%20transpiration%20into%20opportunities&rft.jtitle=Biogeosciences&rft.date=2019-10-01&rft.volume=16&rft.issue=19&rft.spage=3747&rft.epage=3775&rft.issn=1726-4170&1726-4170&rft.au=Stoy,%20Paul%20C.&El-Madany,%20Tarek%20S.&Fisher,%20Joshua%20B.&Gentine,%20Pierre&Gerken,%20Tobias&rft.genre=article&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record