نتایج جستجو برای: hydrological model

تعداد نتایج: 2114287  

2004
Youlong Xia Zong-Liang Yang Paul L. Stoffa Mrinal K. Sen

[1] Estimation of parameters for land-surface models, along with their corresponding uncertainties, relies on the input data for the atmospheric forcing variables including atmospheric pressure, temperature, humidity, wind speed, precipitation, and incoming shortwave and longwave radiation. Most studies assume that forcing data are accurate and contain no random or systematic observational erro...

Journal: :Water Resources Research 2015

2007
W. Oleson Keith Oleson

The circulation of water through the Earth system is of critical importance to life on Earth. The hydrological cycle is also intimately linked to the energy cycle and to biogeochemical processes including the carbon cycle. Simulating the various processes that interact to form the hydrological cycle is a daunting task for climate models. In particular, over land, interactions between precipitat...

2002
Peter Bauer Wolfgang Kinzelbach Krishna Talukdar Emmanuel Baltsavias

The Okavango Delta is one of the world’s most fascinating wetland systems. The highly dynamic flooding forms the basis for a multitude of different ecosystems and plant and animal communities. Water scarcity and economical development lead to an increasing pressure on the ecosystem. A hydrological model is being developed to help making management decisions more sustainable by simulating possib...

Aims: The expansion of cities, especially cities that have seen abnormal growth due to economic, social, and political changes, has caused many problems. It has been found that land-use change, especially urbanization, has greatly affected hydrological characteristics. But in most urban designs, flood forecasting is considered through the type of land use (residential, industrial, etc.) and den...

Water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. In this study simulation of water balance components in Taleghan mountainous watershed is performed using the spatially distributed hydrological...

2009
P. Krause S. Hanisch

The impact of projected climate change on the long-term hydrological balance and seasonal variability in the federal German state of Thuringia was assessed and analysed. For this study projected climate data for the scenarios A2 and B1 were used in conjunction with a conceptual hydrological model. The downscaled climate data are based on outputs of the general circulation model ECHAM5 and provi...

Journal: :International Journal of Geographical Information Science 2008
Jane Xinxin Zhang Kang-Tsung Chang Joan Qiong Wu

Digital elevation models (DEMs) vary in resolution and accuracy by the production method. DEMs with different resolutions and accuracies can generate varied topographic and hydrological features, which can in turn affect predictions by soil erosion models, such as the WEPP (Water Erosion Prediction Project) model. This study investigates the effects of DEMs on deriving topographic and hydrologi...

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