Search Results - "Ogden, Fred L"

An overview of current applications, challenges, and future trends in distributed process-based models in hydrology by Fatichi, Simone, Vivoni, Enrique R., Ogden, Fred L., Ivanov, Valeriy Y., Mirus, Benjamin, Gochis, David, Downer, Charles W., Camporese, Matteo, Davison, Jason H., Ebel, Brian, Jones, Norm, Kim, Jongho, Mascaro, Giuseppe, Niswonger, Richard, Restrepo, Pedro, Rigon, Riccardo, Shen, Chaopeng, Sulis, Mauro, Tarboton, David

“…•Reasons for use of distributed process-based hydrological models are reviewed.•Avenues for developments of process-based hydrological models are…”
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Effect of land cover and use on dry season river runoff, runoff efficiency, and peak storm runoff in the seasonal tropics of Central Panama by Ogden, Fred L., Crouch, Trey D., Stallard, Robert F., Hall, Jefferson S.

“…A paired catchment methodology was used with more than 3 years of data to test whether forests increase base flow in the dry season, despite reduced annual…”
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Relative importance of impervious area, drainage density, width function, and subsurface storm drainage on flood runoff from an urbanized catchment by Ogden, Fred L., Raj Pradhan, Nawa, Downer, Charles W., Zahner, Jon A.

“…The literature contains contradictory conclusions regarding the relative effects of urbanization on peak flood flows due to increases in impervious area,…”
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Diffusive wave models for operational forecasting of channel routing at continental scale by Beg, Md Nazmul Azim, Meselhe, Ehab A., Kim, Dong Ha, Halgren, James, Wlostowski, Adam, Ogden, Fred L., Flowers, Trey

“…Operational forecast models require robust, computationally efficient, and reliable algorithms. We desire accurate forecasts within the limits of the…”
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Land cover effects on soil infiltration capacity measured using plot scale rainfall simulation in steep tropical lowlands of Central Panama by Litt, Guy F., Ogden, Fred L., Mojica, Alexis, Hendrickx, Jan M. H., Kempema, Edward W., Gardner, Christopher B., Bretfeld, Mario, Regina, Jason A., Harrison, J. Bruce J., Cheng, Yanyan, Lyons, W. Berry

“…Understanding land use/land cover (LULC) effects on tropical soil infiltration is crucial for maximizing watershed scale hydro‐ecosystem services and informing…”
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Evidence for the Activation of Shallow Preferential Flow Paths in a Tropical Panama Watershed Using Germanium and Silicon by Gardner, Christopher B., Litt, Guy F., Lyons, W. Berry, Ogden, Fred L.

“…In humid tropical watersheds, the hydrologic flow paths taken by rain event waters and how they interact with groundwater and soil matrix water to form…”
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Land use effects on ecosystem service provisioning in tropical watersheds, still an important unsolved problem by Ogden, Fred L, Stallard, Robert F

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Numerical Solution of Richards' Equation: A Review of Advances and Challenges by Farthing, Matthew W., Ogden, Fred L.

“…Core Ideas The numerical solution of Richards' equation remains challenging. Space/time discretization affects both computational effort and accuracy. Adaption…”
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A method for computing infiltration and redistribution in a discretized moisture content domain by Talbot, Cary A, Ogden, Fred L

“…A new one-dimensional infiltration and redistribution method is proposed as an alternative to the Richards equation (RE) for coupled surface and subsurface…”
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Testing the Effects of Detachment Limits and Transport Capacity Formulation on Sediment Runoff Predictions Using the U.S. Army Corps of Engineers GSSHA Model by Downer, Charles W, Pradhan, Nawa Raj, Ogden, Fred L, Byrd, Aaron R

“…AbstractThe physics-based Gridded Surface Subsurface Hydrologic Analysis (GSSHA) model was developed by the U.S. Army Corps of Engineers for hydrologic,…”
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Earthworms and tree roots: A model study of the effect of preferential flow paths on runoff generation and groundwater recharge in steep, saprolitic, tropical lowland catchments by Cheng, Yanyan, Ogden, Fred L., Zhu, Jianting

“…Preferential flow paths (PFPs) affect the hydrological response of humid tropical catchments but have not received sufficient attention. We consider PFPs…”
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Evidence of equilibrium peak runoff rates in steep tropical terrain on the island of Dominica during Tropical Storm Erika, August 27, 2015 by Ogden, Fred L.

“…•Unique study of extreme tropical rainfall-runoff transformation on a Caribbean Island.•Examination of scaling properties of runoff in context of global…”
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Layered Green and Ampt Infiltration With Redistribution by La Follette, Peter, Ogden, Fred L., Jan, Ahmad

“…Numerical solution of the one‐dimensional Richards equation (RE) accurately partitions precipitation into infiltration and runoff in capillary dominated soils…”
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Characterization of sudden and sustained base flow jump hydrologic behaviour in the humid seasonal tropics of the Panama Canal Watershed by Cheng, Yanyan, Ogden, Fred L., Zhu, Jianting

“…Base flows are important for tropical regions with pronounced dry seasons, which are facing increasing water demands. Base flow generation, however, is one of…”
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A mass-conservative finite volume predictor–corrector solution of the 1D Richards’ equation by Lai, Wencong, Ogden, Fred L.

“…•A predictor–corrector finite volume method solution of the 1D Richards’ equation is presented.•The scheme is mass-conservative and non-iterative.•Five…”
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Land Use‐Dependent Preferential Flow Paths Affect Hydrological Response of Steep Tropical Lowland Catchments With Saprolitic Soils by Cheng, Yanyan, Ogden, Fred L., Zhu, Jianting, Bretfeld, Mario

“…Forested catchments in Central Panama can produce more base flow during the dry season compared to pasture catchments—the so‐called “forest sponge effect.”…”
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Automated correction of systematic errors in high frequency depth measurements above V‐notch weirs using time series decomposition by Regina, Jason A., Ogden, Fred L.

“…Hydrologic studies require high‐quality streamflow measurements. V‐notch weirs provide accurate discharge measurements and when properly equipped produce…”
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Sensitivity and uncertainty analysis of the conceptual HBV rainfall–runoff model: Implications for parameter estimation by Abebe, Nibret A., Ogden, Fred L., Pradhan, Nawa R.

“…HBV is a conceptual hydrological model extensively used in operational hydrological forecasting and water balance studies. In this paper, we apply the HBV…”
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Comment on “Beyond the SCS‐CN method: A theoretical framework for spatially lumped rainfall‐runoff response” by M. S. Bartlett et al by Ogden, Fred L., Hawkins, Richard “Pete”, Walter, M. Todd, Goodrich, David C.

“…Bartlett et al. (2016) performed a re‐interpretation and modification of the space‐time lumped USDA NRCS (formerly SCS) Curve Number (CN) method to extend its…”
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Assessing ecological infrastructure investments by Adamowicz, Wiktor, Calderon-Etter, Laura, Entem, Alicia, Fenichel, Eli P., Hall, Jefferson S., Lloyd-Smith, Patrick, Ogden, Fred L., Regina, Jason A., Rad, Mani Rouhi, Stallard, Robert F.

“…Conventional markets can underprovide ecosystem services. Deliberate creation of a market for ecosystem services [e.g., a payments for ecosystem services (PES)…”
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