搜索结果: 1-15 共查到“水文学 evapotranspiration”相关记录36条 . 查询时间(0.093 秒)
Entropy production by evapotranspiration and its geographic variation
hydrologic cycle evapotranspiration land surface entropy production principle of Maximum Entropy Production vegetation effects
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2015/2/3
The hydrologic cycle is a system far from thermodynamic equilibrium that is characterized by its rate of entropy production in the climatological mean steady state. Over land, the hydrologic cycle is ...
Quantifying the impact of groundwater depth on evapotranspiration in a semi-arid grassland region
groundwater depth evapotranspiration semi-arid grassland
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2011/3/15
Interactions between shallow groundwater and land surface processes play an important role in the ecohydrology of riparian zones. Some recent land surface models (LSMs) incorporate groundwater-land su...
Evapotranspiration modelling at large scale using near-real time MSG SEVIRI derived data
Evapotranspiration modelling using near-real MSG SEVIRI
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2011/3/15
We present an evapotranspiration (ET) model developed in the framework of the EUMETSAT "Satellite Application Facility" (SAF) on Land Surface Analysis (LSA). The model is a simplified Soil-Vegetation-...
Topographic effects on solar radiation distribution in mountainous watersheds and their influence on reference evapotranspiration estimates at watershed scale
solar radiation distribution mountainous watersheds
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2010/12/22
Distributed energy and water balance models require time-series surfaces of the climatological variables involved in hydrological processes. Among them, solar radiation constitutes a key variable to ...
Spatial uncertainty assessment in modelling reference evapotranspiration at regional scale
evapotranspiration regional scale
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2010/12/22
Evapotranspiration is one of the major components of the water balance and has been identified as a key factor in hydrological modelling. For this reason, several methods have been developed to calcul...
Reference crop evapotranspiration derived from geo-stationary satellite imagery: a case study for the Fogera flood plain, NW-Ethiopia and the Jordan Valley, Jordan
Reference crop evapotranspiration geo-stationary satellite imagery
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2010/12/22
First results are shown of a project aiming to estimate daily values of reference crop evapotranspiration ET0 from geo-stationary satellite imagery. In particular, for Woreta, a site in the Ethiopian ...
Estimation of evapotranspiration in the Mu Us Sandland of China
Estimation evapotranspiration Mu Us Sandland
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2010/4/7
Evapotranspiration (ET) was estimated from 1981–2005 over Wushen County located in the Mu Us Sandland, China, by applying the Advection-Aridity model, which is based on the complementary relationship ...
Actual daily evapotranspiration estimated from MERIS and AATSR data over the Chinese Loess Plateau
Actual daily evapotranspiration MERIS AATSR data Chinese Loess Plateau
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2010/2/1
The Chinese Loess Plateau is located in the north of China and has a significant impact on the climate and ecosystem evolvement over the East Asian continent. Estimates of evapotranspiration (ET) at a...
AN ESTIMATION OF EVAPOTRANSPIRATION BY MEANS OF THE WATER BALANCE OF A SOIL COLUMN
ESTIMATION OF EVAPOTRANSPIRATION MEANS OF THE WATER BALANCE SOIL COLUMN
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2009/10/30
In this paper water-balance studies of a soil column at an observation site
at Ulvsunda, Stockholm, are reported. The change of the water storage in
the soil was obtained from soil moisture measurem...
POTENTIAL EVAPOTRANSPIRATION AND WATER BALANCE IN ICELAND
POTENTIAL EVAPOTRANSPIRATION WATER BALANCE ICELAND
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2009/10/29
The paper describes the results of estimations of potential evapotranspiration
(ED) in Iceland using Penman's equation. The calculations are based
on distribution maps for global radiation for the p...
ACTUAL EVAPOTRANSPIRATION IN RELATION TO LEAF AREA
ACTUAL EVAPOTRANSPIRATION LEAF AREA
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2009/10/29
The ratio of leaf area to ground area required for maintaining potential
cvaporation has been studied in a 4-year investigation, and the influence
of leaf area index on the water use and the actual ...
EVAPOTRANSPIRATION AND PLANT PRODUCTION DIRECTLY RELATED TO GLOBAL RADIATION
EVAPOTRANSPIRATION PLANT PRODUCTION DIRECTLY GLOBAL RADIATION
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2009/10/29
This article is based on the thesis, that when sun radiation is not in cxcess
and advected energy supply can be neglected, then for periods of plant
cover and growth, both evapotranspiration and pla...
A MODEL FOR ESTIMATING ACTUAL EVAPOTRANSPIRATION FROM POTENTIAL EVAPOTRANSPIRATION
ACTUAL EVAPOTRANSPIRATION POTENTIAL EVAPOTRANSPIRATION
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2009/10/29
A model for calculating thc daily actual evapotranspiration based on tlie
potential one is presented. The potcntial evapotranspiration is reduced
according to vegetation density, water contcnt in th...
Evapotranspiration at Two Mountain Sites During the Vegetation Period
Evapotranspiration Two Mountain Sites Vegetation Period
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2009/10/28
Hourly values of evapotranspiration (ET) for the months July to September
1976 and 1977 were calculated from energy balance measurements at two test
sites near the village of Obergurgl in the Austri...
Measurement and Mapping of Potential Evapotranspiration in a Small Mountainous Watershed
Measurement Mapping Potential Evapotranspiration Small Mountainous Watershed
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2009/10/28
The potential evapotranspiration ETP can be estimated by using Brochet and
Gerbier's formula (1972), which is derived from Penman's equation
where m and n are tabulated coefficients depending on sea...