Stable water isotope simulation by current land-surface schemes: Results of iPILPS Phase 1

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dc.contributor.author Henderson-Sellers, A
dc.contributor.author Fischer, M
dc.contributor.author Aleinov, I
dc.contributor.author McGuffie, K
dc.contributor.author Riley, WJ
dc.contributor.author Schmidt, GA
dc.contributor.author Sturm, K
dc.contributor.author Yoshimura, K
dc.contributor.author Irannejad, P
dc.date.accessioned 2009-06-26T04:11:11Z
dc.date.issued 2006-05
dc.date.issued 2006-05
dc.identifier.citation Global and Planetary Change, 2006, 51 (1-2 SPEC. ISS.), pp. 34 - 58
dc.identifier.citation Global and Planetary Change, 2006, 51 (1-2 SPEC. ISS.), pp. 34 - 58
dc.identifier.issn 0921-8181
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/695
dc.description.abstract Phase 1 of isotopes in the Project for Intercomparison of Land-surface Parameterization Schemes (iPILPS) compares the simulation of two stable water isotopologues (1H218O and 1H2H16O) at the land-atmosphere interface. The simulations are offline, with forcing from an isotopically enabled regional model for three locations selected to offer contrasting climates and ecotypes: an evergreen tropical forest, a sclerophyll eucalypt forest and a mixed deciduous wood. Here, we report on the experimental framework, the quality control undertaken on the simulation results and the method of intercomparisons employed. The small number of available isotopically enabled land-surface schemes (ILSSs) limits the drawing of strong conclusions, but, despite this, there is shown to be benefit in undertaking this type of isotopic intercomparison. Although validation of isotopic simulations at the land surface must await more and much more complete, observational campaigns, we find that the empirically based Craig-Gordon parameterization (of isotopic fractionation during evaporation) gives adequately realistic isotopic simulations when incorporated in a wide range of land-surface codes. By introducing two new tools for understanding isotopic variability from the land surface, the isotope transfer function and the iPILPS plot, we show that different hydrological parameterizations cause very different isotopic responses. We show that ILSS-simulated isotopic equilibrium is independent of the total water and energy budget (with respect to both equilibration time and state), but interestingly the partitioning of available energy and water is a function of the models' complexity. © 2006 Elsevier B.V. All rights reserved.
dc.description.abstract Phase 1 of isotopes in the Project for Intercomparison of Land-surface Parameterization Schemes (iPILPS) compares the simulation of two stable water isotopologues (1H218O and 1H2H16O) at the land-atmosphere interface. The simulations are offline, with forcing from an isotopically enabled regional model for three locations selected to offer contrasting climates and ecotypes: an evergreen tropical forest, a sclerophyll eucalypt forest and a mixed deciduous wood. Here, we report on the experimental framework, the quality control undertaken on the simulation results and the method of intercomparisons employed. The small number of available isotopically enabled land-surface schemes (ILSSs) limits the drawing of strong conclusions, but, despite this, there is shown to be benefit in undertaking this type of isotopic intercomparison. Although validation of isotopic simulations at the land surface must await more and much more complete, observational campaigns, we find that the empirically based Craig-Gordon parameterization (of isotopic fractionation during evaporation) gives adequately realistic isotopic simulations when incorporated in a wide range of land-surface codes. By introducing two new tools for understanding isotopic variability from the land surface, the isotope transfer function and the iPILPS plot, we show that different hydrological parameterizations cause very different isotopic responses. We show that ILSS-simulated isotopic equilibrium is independent of the total water and energy budget (with respect to both equilibration time and state), but interestingly the partitioning of available energy and water is a function of the models' complexity. © 2006 Elsevier B.V. All rights reserved.
dc.language eng
dc.language eng
dc.relation.isbasedon 10.1016/j.gloplacha.2006.01.003
dc.title Stable water isotope simulation by current land-surface schemes: Results of iPILPS Phase 1
dc.type Journal Article
dc.description.version Published
dc.parent Global and Planetary Change
dc.parent Global and Planetary Change
dc.journal.volume 1-2 SPEC. ISS.
dc.journal.volume 1-2 SPEC. ISS.
dc.journal.volume 51
dc.journal.number 1-2 en_US
dc.publocation Amsterdam, The Netherlands en_US
dc.identifier.startpage 34 en_US
dc.identifier.endpage 58 en_US
dc.cauo.name SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.for 0406 Physical Geography and Environmental Geoscience
dc.personcode 880408
dc.percentage 100 en_US
dc.classification.name Physical Geography and Environmental Geoscience en_US
dc.classification.type FOR-08 en_US
dc.description.keywords Craig-Gordon scheme
dc.description.keywords Craig-Gordon scheme
dc.description.keywords land parameterization
dc.description.keywords land parameterization
dc.description.keywords model intercomparison
dc.description.keywords model intercomparison
dc.description.keywords PILPS
dc.description.keywords PILPS
dc.description.keywords water isotopes
dc.description.keywords water isotopes
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history School of Physics and Advanced Materials (ID: 343)
utslib.collection.history Closed (ID: 3)
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:11:19+10:00]


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