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dc.contributor.authorGetirana, Augusto
dc.contributor.authorKumar, Sujay
dc.contributor.authorKonapala, Goutam
dc.contributor.authorNdehedehe, Christopher E
dc.date.accessioned2021-05-16T23:16:55Z
dc.date.available2021-05-16T23:16:55Z
dc.date.issued2021
dc.identifier.issn1942-2466
dc.identifier.doi10.1029/2021ms002463
dc.identifier.urihttp://hdl.handle.net/10072/404414
dc.description.abstractIt is known that representing wetland dynamics in land surface modeling improves models’ capacity to reproduce fluxes and land surface boundary conditions for atmospheric modeling in general circulation models. This study presents the development of the full coupling between the Noah‐MP land surface model (LSM) and the HyMAP flood model in the NASA Land Information System and its application over the Inner Niger Delta (IND), a well‐known hot‐spot of strong land surface‐atmosphere interactions in West Africa. Here, we define two experiments at 0.02º spatial resolution over 2002‐2018 to quantify the impacts of the proposed developments on simulating IND dynamics. One represents the one‐way approach for simulating land surface and flooding processes (1‐WAY), i.e., Noah‐MP neglects surface water availability, and the proposed two‐way coupling (2‐WAY), where Noah‐MP takes surface water availability into account in the vertical water and energy balance. Results show that accounting for two‐way interactions between Noah‐MP and HyMAP over IND improves simulations of all selected hydrological variables. Compared to 1‐WAY, evapotranspiration derived from 2‐WAY over flooding zones doubles, increased by 0.8mm/day, resulting in an additional water loss rate of ∼18,900km3/year, ∼40% drop of wetland extent during wet seasons and major improvement in simulated water level variability at multiple locations. Significant soil moisture increase and surface temperature drop were also observed. Wetland outflows decreased by 35%, resulting in a substantial a Nash‐Sutcliffe coefficient improvement, from ‐0.73 to 0.79. It is anticipated that future developments in water monitoring and water‐related disaster warning systems will considerably benefit from these findings.
dc.description.peerreviewedYes
dc.languageen
dc.publisherAmerican Geophysical Union (AGU)
dc.relation.ispartofjournalJournal of Advances in Modeling Earth Systems
dc.subject.fieldofresearchHydrology
dc.subject.fieldofresearchSurface water hydrology
dc.subject.fieldofresearchAtmospheric sciences
dc.subject.fieldofresearchcode3707
dc.subject.fieldofresearchcode370704
dc.subject.fieldofresearchcode3701
dc.titleImpacts of fully coupling land surface and flood models on the simulation of large wetland’s water dynamics: the case of the Inner Niger Delta
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationGetirana, A; Kumar, S; Konapala, G; Ndehedehe, CE, Impacts of fully coupling land surface and flood models on the simulation of large wetland’s water dynamics: the case of the Inner Niger Delta, Journal of Advances in Modeling Earth Systems
dc.date.updated2021-05-15T04:17:06Z
dc.description.versionAccepted Manuscript (AM)
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.
gro.rights.copyright© 2021 American Geophysical Union. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorNdehedehe, Christopher E.


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