Estimation of river basin evapotranspiration

Publisher: Environmental Research Center, University of Tsukuba in Ibaraki, Japan

Written in English
Published: Pages: 66 Downloads: 234
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Edition Notes


StatementKazuo Kotoda.
SeriesEnvironmental Research Center papers,, no. 8
LC ClassificationsIN PROCESS
The Physical Object
Pagination66 p. :
Number of Pages66
ID Numbers
Open LibraryOL1150227M
LC Control Number94123951

The estimation of evapotranspiration (ET) and its components (evaporation from the soil surface (Es) and transpiration or plant evaporation (E p) has been a key issue in hydrological studies (Nakayama, ; Wagner et al., ) and to enhance water use efficiency of irrigated crops (Evans and Sadler, ).   We estimate basin discharge as the dam releases from the two largest dams in the CRB, Glen Canyon Dam on Lake Powell in the Upper Basin, and Hoover Dam on Lake Mead in the Lower Basin, each marking the main surface water storage components that distribute 85% of river flows along the CRB [Christensen et al., ]. For the Upper and Lower Cited by: The hydrologic budget for a catchment in a given duration can be written as & Ad Free! EXPLORE VIP Membership •This water budget can be used to estimate AET, if other terms are known or measured or estimated. Measurement of ET For a given type of vegetation, ET can be measured – Using Lysimeters – [ ]. Evapotranspiration is the largest component of water loss from storage and has a major influence on all hydrological processes. Based on meteological and hydrological in the upper reaches of the Jinghe River basin, Advection-Aridity model was applied to estimate the actual evapotranspiration from to The results showed that the average annual Author: S.z. Dang, G.t. Dong, F.r. Zhang, K. Du.

Remote sensing estimation of land surface evapotranspiration of typical river basins in China River and Pearl River basins are located in high LET regions, with an average annual LET of mm for the Yangtze basin and mm for the Pearl River basin. The Liaohe River basin is mainly located in regions of medium LET, with an average LET of. Satellite‐based actual evapotranspiration estimation in the middle reach of the Heihe River Basin using the SEBAL method. Shoubo Li. Linze Inland River Basin Comprehensive Research Station, Chinese Ecosystem Research Network, Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Research Cited by: ET estimates are also compared with the ET computed from a detailed distributed energy water balance model and with the ET product from the Moderate Resolution Imaging Spectroradiometer Global Evapotranspiration Project. These analyses are performed for the Upper Yangtze River basin (China) in the framework of NRSCC-ESA DRAGON-2 by: Environment and Disasters Monitoring Microsatellite Constellation of A and B star (HJ-1A/B), which was developed by China, has high space and temporary resolution and is widely used. In this paper, SEBS model and Priestley-Taylor Equation combined with Ts-NDVI feature space are used to estimate ET of Heihe River basin.

For the spatial scale of practical applications (e.g., river basin), there is a growing interest on remote sensing technologies, which attempt to estimate actual evapotranspiration at regional scales, by combining ground measurements with satellite-derived data. Otherwise, the only reliable method is based on the calculation of the water. Reference evapotranspiration (ETo) is a key factor in determining the amount of water needed for crops, which is crucial to correct irrigation planning. FAO Penman-Monteith (EToPM) is among the most popular method to estimate ETo. Apparently sometimes it is difficult to compute ETo using Penman-Monteith due to challenges on data availability. Abstract To estimate the amount of evapotranspiration in a river basin, the “short period water balance method” was formulated. Then, by introducing the “complementary relationship method,” the amount of evapotranspiration was estimated seasonally, and with reasonable accuracy, for both small and large by: 1. Progress 03/23/04 to 05/31/05 Outputs A study has been initiated to evaluate the long term water balance study in two separate valleys located in east-central Nevada. In a stable hydrologically closed basin the recharge is assumed equal to the discharge, where the recharge can be defined as precipitation and the discharge is accounted for by evapotranspiration.

Estimation of river basin evapotranspiration Download PDF EPUB FB2

Scale environment, such as a river basin surface with complicated topography and variable land use, is still among the less understood aspects of the hydrological cycle. The present paper is intended to establish a method for estimating actual évapotranspiration from a river basin, while taking both the Estimation of river basin evapotranspiration book and complex landCited by: 9.

COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle.

Evapo-transpiration estimation over the river basin of the Loess Plateau of China based on remote sensing [An article from: Journal of Arid Environments] [R. Kimura, L. Bai, J. Fan, N. Takayama, Hinokidani] on *FREE* shipping on qualifying offers.

This digital document is a journal article from Journal of Arid Environments, published by Elsevier in Author: R. Kimura, L. Bai, J. Fan, N. Takayama, Hinokidani. ESTIMATION OF EVAPOTRANSPIRATION IN THE MEKONG RIVER BASIN. This book provides an introduction to the scope, potential, and limitations of remote sensing.

A method for estimating areal. The TRB extends over the area from 34°20′ to 43°39′N and from 71°39′ to 93°45′E and is the largest inland river basin in consists of nine drainage systems with tributaries and covers a total area of million km in and desert areas account for 47% and 33% of the basin, respectively, and plains account for the remaining 20% (Ling et al.

).Cited by: 6. map of Shipra river basin is given in Figure 1. Potential evapotranspiration estimation methods Potential evapotranspiration is an important input in hydrological cycle simulations. There are many kinds of potential evapotranspiration estimation methods however, the use of different methods to estimate potential.

The accurate estimation of actual evapotranspiration can help improve the utilization of water resources and ease the ecological stress. Based on the generalized complementary principle proposed by Brutsaert inwe used meteorological and hydrological data to estimate the actual evapotranspiration at a resolution of 1 km ×&#x;1&#x;km between the years Cited by: 5.

Estimation of river basin evapotranspiration book River Basin is the second largest inland river basin in northwest of China, water shortage has become a crucial problem to regional ecological, environmental, economic and other related areas.

The research on regional evapotranspiration is in an urgent need in this area. Estimation of evapotranspiration in the Brígida River basin (Brazil) by satellite remote sensing Vegetation cover provides protection of the soil against erosion processes. In many regions of the world, vegetation cover shows high temporal dynamics.

Long-term dynamics can be related to land-use conversions or gradual depletion of resources. [1] We estimated long‐term annual evapotranspiration (ET Q) at the watershed scale by combining continuous daily streamflow (Q) records, a simplified watershed water balance, and a nonlinear reservoir analysis used Q measured from 11 watersheds (area ranged from 12 to km 2) from the uppermost section of the Neuse River Basin in North Carolina, by: In light of the large heterogeneity of other irrigated areas throughout the world, such as the Colorado River Basin (Senay et al., ) and the Yellow River Basin (Bai et al., ), further efforts are needed to produce high resolution ET data so that irrigation water efficiency can be improved at local scales.

These efforts could help to Cited by: estimation evapotranspiration mekong river basin dry season actual evapotranspiration square method spatial variation vegetation coverage actual evapotranspiration distribution noaa satellite data well-known rainfall-runoff tank model noaa satellite logarithmic function data set fitted regression line monthly variation mekong river basin water.

in the upper Huaihe River basin, which is one of the most important agricultural areas in China (Yu, ). In this paper, distributed dual-source evapotranspiration model (Yuan, ) coupled with simplified plant growth model Neitsch et al. () was adopted to calculate the basin evapotranspiration.

Model development The site chosen for estimating the potential evapotranspiration rates was the upper Bhima basin, situated in the three Districts of Maharashtra State, namely, Ahmadnagar, Pune and Solapur.

The catchment area is draining into Ujjani Reservoir, located in Solapur District. The drainage area of the catchment area is about The Nagqu river basin, which is located in the sout hern part of the TP, China, has a size of about km2 and a mean elevation of more than m above sea level (Figure 1).

It is located between the Tanggula Mountains and the Nyainqentanglha Mountains [22]. The Nagqu river basin is part of the Nu River system. The book is a thorough presentation of theoretical and applied aspects of the evaporation and evapotranspiration process supported by data from experimental studies.

It is written in a way that the theoretical background of evaporation and evapotranspiration estimation is presented in a simplified manner, comprehensive to most technical by: Estimation of actual evapotranspiration in the Nagqu river basin of the Tibetan Plateau: Authors: precipitation, and soil moisture were used to estimate actual ET.

The regression model simulation results were validated with independent data retrieved using the combinatory method.

The results suggested that significant correlations exist. The AVHRR data were used to estimate evapotranspiration in the Krishna River Basin, India, for the period to Results show that the basin‐average evapotranspiration (ET) increased continuously at the mean rate of mm yr −1 yr −1 during this period.

The land‐use information showed that the increased ET was mainly due to the. Satellite‐based actual evapotranspiration estimation in the middle reach of the Heihe River Basin using the SEBAL method Shoubo Li Linze Inland River Basin Comprehensive Research Station, Chinese Ecosystem Research Network, Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Research Cited by: In this study, a one-source SEB model named Mapping evapotranspiration at high Resolution with Internalized Calibration (MTRIC), and a two-source SEB model named Two-source Trapezoid Model for Evapotranspiration (TTME), were selected to estimate latent heat flux (LE) in a selected sub-region of the middle reaches of the Heihe River Basin.

Evapotranspiration from the Lower Walker River Basin, West-Central Nevada, Water Years –07 Scientifi c Investigations Report – Prepared in cooperation with the Bureau of Reclamation U.S. Department of the Interior U.S. Geological Survey. During the past two to three decades, significant progress has been made in estimating actual evapotranspiration using satellite remote sensing.

Recently, the remote sensing and the techniques of geoprocessing have been used in diverse areas of. All the available data products underestimate evapotranspiration leading to basin‐scale mass balance errors on the order of 35 percent of the mean annual rainfall.

This paper presents a methodology that combines satellite observations of rainfall, terrestrial water storage as well as river‐flow gauge measurements to estimate actual.

(2) Model estimation of available renewable freshwater resources in forest areas of the Mekong River basin Elevation and gradient data were used to clarify topo-graphical characteristics of the basin. The arcsec digital elevation dataset GTOPO30 provided by the U.S. Geologi-cal Survey (USGS) was processed to yield gradient by: 1.

Evapotranspiration (ET) variations in the Yangtze River Basin (YRB) are influenced by environmental and climate changes related to planting of crops, forest vegetation, water use and other human activities. However, it is difficult to measure ET variations and analyse influencing factors in the YRB due to lack of in-situ measurements.

Evapotranspiration Estimation and Influence on Water Change in the Weihe River Basin, China. Ronghua Zhang. 1,2, Rui Sun. 2† 1. Forestry College of Shandong Agricultural University, Key Laboratory of Soil Erosion and Ecological Restoration, Taishan Forest Ecosystem Research Station, TaianChina.

The Haihe River Basin is the focus of China’s industrial base and it is one of the three major grain-producing regions within the country.

Higher temporal evapotranspiration estimation with Cited by: 2. Potential Evapotranspiration Estimation in the Upper Huaihe River Basin, China Conference Paper in Procedia Engineering December with Reads How we.

Reference evapotranspiration (ET0) is a key element of the water cycle in tropical areas for the planning and management of water resources, hydrological modeling, and irrigation management. The objective of this research is to assess twenty methods in computing ET0 in the Senegal River Basin and to calibrate and validate the best methods that integrate fewer climate variables.

Estimating Evapotranspiration in the Smith River Basin, Montana Landsat imagery was used to calculate evapotranspiration within the Smith River Basin to refine the basin water balance and to determine water use impacts on groundwater and surface-water interactions on the mainstem and tributaries of the Smith River, Montana.

Actual evapotranspiration is a key process of hydrological cycle and a sole term that links land surface water balance and land surface energy balance.

Evapotranspiration plays a key role in simulating hydrological effect of climate change, and a review of evapotranspiration estimation methods in hydrological models is of vital importance. This paper firstly summarizes the evapotranspiration Cited by: The Yellow River is the second longest river in China, with a length of 5, km, originating from Qinghai Plateau and flowing through the Loess Plateau and Huang-Huai-Hai Great Plain and finally into the Bohai Sea ().The Yellow River basin is located in arid, semi-arid and semi-humid climates with the drainage area ofkm 2, and it is the homeland for million : Miao Zhang, Xing Yuan, Xing Yuan.

The Heihe River Basin is the second largest inland river basin in arid northwestern China. Accurate estimation of regional evapotranspiration (ET) and its spatial distribution in the oasis area plays an important role for water resource management in the whole basin.

The objective of this study was to estimate the temporal and spatial variations of ET for Cited by: