Spatial-temporal characters of evapotranspiration in the Yellow River Delta

Author

Zhu, Mingming ; Hou, Xiyong ; Lu, Xiao ; Li, Mingjie

Author_Institution

Key Lab. of Coastal Zone Environ. Processes, CAS, Yantai, China

fYear

2011

fDate

June 29 2011-July 1 2011

Firstpage

409

Lastpage

412

Abstract

Evapotranspiration (ET) is an important variable for water and energy balances on the earth´s surface. Surface Energy Balance Algorithm for Land (SEBAL) is an image-processing model that calculates ET over vast areas. In this study, time series of MODIS data in 2009 and meteorological data are used to estimate ET over the Yellow River Delta (YRD) by SEBAL, and then the spatial-temporal characters of ET are analyzed. It shows that, monthly average ET presents a unimodal distribution that the peak value locates in June, ET changes with the corresponding of climate and underlying surface coverage variations over time and season; there are great spatial diversities of ET, Water and beach have a relatively high level of ET which are mainly located in the northeast and northern of the study area. ET in Guangrao County tends to decrease from May to July, and then increase rapidly in August, finally decreases sharply in September and October.

Keywords

atmospheric humidity; evaporation; meteorology; spatiotemporal phenomena; time series; transpiration; AD 2009; China; Guangrao County; MODIS data; SEBAL model; Surface Energy Balance Algorithm for Land; Yellow River Delta; climate; energy balance; evapotranspiration; image processing model; spatial-temporal character; surface coverage variation; time series; water balance; Agriculture; Equations; Land surface; Mathematical model; Meteorology; Ocean temperature; Remote sensing; Evapotranspiration; MODIS; SEBAL; the Yellow River Delta;

fLanguage

English

Publisher

ieee

Conference_Titel

Spatial Data Mining and Geographical Knowledge Services (ICSDM), 2011 IEEE International Conference on

Conference_Location

Fuzhou

Print_ISBN

978-1-4244-8352-5

Type

conf

DOI

10.1109/ICSDM.2011.5969076

Filename

5969076