搜索结果: 1-15 共查到“理学 Evapotranspiration”相关记录48条 . 查询时间(0.14 秒)
ESTIMATION OF INSTANTANEOUS EVAPOTRANSPIRATION USING REMOTE SENSING BASED ENERGY BALANCE TECHNIQUE OVER PARTS OF NORTH INDIA
Evapotranspiration Energy Balance Approach Remote Sensing Sensible heat flux
2019/2/27
Evapotranspiration (ET) is an essential element of the hydrological cycle and plays a significant role in regional and global climate through the hydrological circulation. Estimation and monitoring of...
Entropy production by evapotranspiration and its geographic variation
hydrologic cycle evapotranspiration land surface entropy production principle of Maximum Entropy Production vegetation effects
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 ...
Simultaneously assimilating multivariate data sets into the two-source evapotranspiration model by Bayesian approach: application to spring maize in an arid region of northwestern China
Simultaneously assimilating multivariate data sets two-source evapotranspiration model Bayesian approach spring maize in an arid region of northwestern China
2014/12/19
Based on direct measurements of half-hourly canopy evapotranspiration (ET; W m−2) using the eddy covariance (EC) system and daily soil evaporation (E; mm day−1) using microlysimeters over ...
Evapotranspiration Retrieval in Arid and Semi-Arid Areas
Arid Areas Evapotranspiration MODIS Remote Sensing Xinjiang
2011/12/20
A typical arid area in China is the province of Xinjiang. The objective of this paper is to present a description of a method based on the energy balance and evaporative fraction, which is obtained by...
Quantifying the impact of groundwater depth on evapotranspiration in a semi-arid grassland region
groundwater depth evapotranspiration semi-arid grassland
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
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
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
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
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
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 ...
Modeling of vegetation dynamics in hydrological models for the assessment of the effects of climate change on evapotranspiration and groundwater recharge
vegetation dynamics hydrological
2010/2/3
Vegetation affects water balance of the land surface by e.g. storage of precipitation water in the canopy and soil water extraction by transpiration. Therefore, it is essential to consider the role of...
Actual daily evapotranspiration estimated from MERIS and AATSR data over the Chinese Loess Plateau
Actual daily evapotranspiration MERIS AATSR data Chinese Loess Plateau
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
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
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...
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 ...