64 Papers
183 Citations
Gift Dumedah is an academic researcher from Kwame Nkrumah University of Science and Technology. The author has contributed to research in topics: Data assimilation & Population. The author has an hindex of 16, co-authored 47 publications. Previous affiliations of Gift Dumedah include University of Guelph & Monash University, Clayton campus.
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Papers
SMOS soil moisture assimilation for improved hydrologic simulation in the Murray Darling Basin, Australia
Hans Lievens,Sat Kumar Tomer,Ahmad Al Bitar,G. De Lannoy,Matthias Drusch,Gift Dumedah,Harrie-Jan Hendricks Franssen,Yann Kerr,Brecht Martens,Ming Pan,Joshua K. Roundy,Harry Vereecken,Jeffrey P. Walker,Eric F. Wood,Niko E. C. Verhoest,Valentijn R. N. Pauwels +15 more
TL;DR: In this article, the authors explored the benefits of assimilating SMOS retrievals for hydrologic modeling, with a focus on soil moisture and streamflow simulations in the Murray Darling Basin, Australia.
231
Assimilation of SMOS soil moisture and brightness temperature products into a land surface model
Hans Lievens,G. De Lannoy,Ahmad Al Bitar,Matthias Drusch,Gift Dumedah,Harrie-Jan Hendricks Franssen,Y. H. Kerr,Sat Kumar Tomer,Brecht Martens,Olivier Merlin,Ming Pan,Joshua K. Roundy,Harry Vereecken,Jeffrey P. Walker,Eric F. Wood,Niko E. C. Verhoest,Valentijn R. N. Pauwels +16 more
TL;DR: In this article, the performance of various observation scenarios with respect to soil moisture and streamflow predictions in the Murray Darling Basin was investigated using the Ensemble Kalman Filter (EKF).
86
Assessing model state and forecasts variation in hydrologic data assimilation
TL;DR: In this paper, three approaches of Ensemble Kalman Filter (EnKF) with dual state-parameter estimation are applied: (1) streamflow assimilation, (2) soil moistue assimilation and (3) combined assimilation of soil moisture and streamflow.
79
Urban sprawl and green space depletion: Implications for flood incidence in Kumasi, Ghana
Kabila Abass,Daniel Buor,Kwadwo Afriyie,Gift Dumedah,Alex Yao Segbefi,Lawrence Guodaar,Emmanuel Kofi Garsonu,Samuel Adu-Gyamfi,David Forkuor,Andrews Ofosu,Abass Mohammed,Razak M. Gyasi +11 more
TL;DR: In this article, the authors employed a combined use of geospatial techniques, key informant interviews and direct observations to explain the relationship between urban sprawl and flood occurrence, and found that impermeable areas have expanded by 54% from 1986 to 2016 while permeable space correspondingly declined by the same rate.
79
Copula-Based Downscaling of Coarse-Scale Soil Moisture Observations With Implicit Bias Correction
Niko E. C. Verhoest,Martinus van den Berg,Brecht Martens,Hans Lievens,Eric F. Wood,Ming Pan,Yann Kerr,Ahmad Al Bitar,Sat Kumar Tomer,Matthias Drusch,Hilde Vernieuwe,Bernard De Baets,Jeffrey P. Walker,Gift Dumedah,Valentijn R. N. Pauwels +14 more
TL;DR: A statistical framework is presented that allows for the downscaling of the coarse-scale SMOS soil moisture product to a finer resolution and is applied to SMOS observations over the Upper Mississippi River basin.