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Article: A weak-constraint-based data assimilation scheme for estimating surface turbulent fluxes

TitleA weak-constraint-based data assimilation scheme for estimating surface turbulent fluxes
Authors
KeywordsData assimilation
Evapotranspiration
Land surface temperature (LST)
Weak constraint
Issue Date2007
Citation
IEEE Geoscience and Remote Sensing Letters, 2007, v. 4, n. 4, p. 649-653 How to Cite?
AbstractMuch attention has been focused on the assimilation of satellite data and products into land surface processes. In this letter, a variational data assimilation scheme is developed based on the weak-constraint concept. It assimilates surface skin temperature into a simple land surface model for the estimation of turbulent fluxes. An automatic differentiation technique is used to derive the adjoint codes to evaluate the gradient of the cost function. After the construction of this assimilation system, numerical experiments are conducted to test its performance with different model errors, and the comparison is also made with the strong constraint scheme. The results show that the land surface turbulent fluxes can be retrieved with highly satisfactory accuracy. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/321335
ISSN
2023 Impact Factor: 4.0
2023 SCImago Journal Rankings: 1.248
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQin, Jun-
dc.contributor.authorLiang, Shunlin-
dc.contributor.authorLiu, Ronggao-
dc.contributor.authorZhang, Hao-
dc.contributor.authorHu, Bo-
dc.date.accessioned2022-11-03T02:18:13Z-
dc.date.available2022-11-03T02:18:13Z-
dc.date.issued2007-
dc.identifier.citationIEEE Geoscience and Remote Sensing Letters, 2007, v. 4, n. 4, p. 649-653-
dc.identifier.issn1545-598X-
dc.identifier.urihttp://hdl.handle.net/10722/321335-
dc.description.abstractMuch attention has been focused on the assimilation of satellite data and products into land surface processes. In this letter, a variational data assimilation scheme is developed based on the weak-constraint concept. It assimilates surface skin temperature into a simple land surface model for the estimation of turbulent fluxes. An automatic differentiation technique is used to derive the adjoint codes to evaluate the gradient of the cost function. After the construction of this assimilation system, numerical experiments are conducted to test its performance with different model errors, and the comparison is also made with the strong constraint scheme. The results show that the land surface turbulent fluxes can be retrieved with highly satisfactory accuracy. © 2007 IEEE.-
dc.languageeng-
dc.relation.ispartofIEEE Geoscience and Remote Sensing Letters-
dc.subjectData assimilation-
dc.subjectEvapotranspiration-
dc.subjectLand surface temperature (LST)-
dc.subjectWeak constraint-
dc.titleA weak-constraint-based data assimilation scheme for estimating surface turbulent fluxes-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/LGRS.2007.904004-
dc.identifier.scopuseid_2-s2.0-35348918915-
dc.identifier.volume4-
dc.identifier.issue4-
dc.identifier.spage649-
dc.identifier.epage653-
dc.identifier.isiWOS:000250389900031-

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