Reference crop evapotranspiration derived from geo-stationary satellite imagery: a case study for the Fogera flood plain, NW-Ethiopia and the Jordan Valley, Jordan

被引:39
作者
de Bruin, H. A. R. [1 ]
Trigo, I. F. [2 ,6 ]
Jitan, M. A. [3 ]
Enku, N. Temesgen [4 ]
van der Tol, C. [5 ]
Gieske, A. S. M. [5 ]
机构
[1] Wageningen Univ, Wageningen, Netherlands
[2] Inst Meteorol, Lisbon, Portugal
[3] NCARE, Dept Water & Environm, Amman, Jordan
[4] Bahir Dar Univ, Dept Water Resources Engn, Bahir Dar, Ethiopia
[5] Univ Twente, Fac ITC, NL-7500 AE Enschede, Netherlands
[6] Inst Dom Luiz, Lisbon, Portugal
关键词
PRIESTLEY-TAYLOR; PENMAN-MONTEITH; RADIATION; EVAPORATION;
D O I
10.5194/hess-14-2219-2010
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
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 highland at an elevation of about 1800 m, we tested a radiation-temperature based approximate formula proposed by Makkink (MAK), adopting ET0 evaluated with the version of the Penman-Monteith equation described in the FAO Irrigation and Drainage paper 56 as the most accurate estimate. More precisely we used the latter with measured daily solar radiation as input (denoted by PMFAO-Rs). Our data set for Woreta concerns a period where the surface was fully covered with short green non-stressed vegetation. Our project was carried out in the context of the Satellite Application Facility on Land Surface Analysis (LANDSAF) facility. Among others, the scope of LANDSAF is to increase benefit from the EUMETSAT Satellite Meteosat Second Generation (MSG). In this study we applied daily values of downward solar radiation at the surface obtained from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) radiometer. In addition, air temperature at 2m was obtained from 3-hourly forecasts provided by the European Centre for Medium-Range Weather Forecasts (ECMWF). Both MAK and PMFAO-Rs contain the psychrometric "constant", which is proportional to air pressure, which, in turn, decreases with elevation. In order to test elevation effects we tested MAK and its LANDSAF input data for 2 sites in the Jordan Valley located about 250 m b.s.l. Except for a small underestimation of air temperature at the Ethiopian site at 1800 m, the first results of our LANDSAF-ET0 project are promising. If our approach to derive ET0 proves successfully, then the LANDSAF will be able to initiate nearly real time free distribution of ET0 for the full MSG disk.
引用
收藏
页码:2219 / 2228
页数:10
相关论文
共 49 条
[1]  
ALEMSEGED B, 2010, THESIS ITC
[2]   Daily reference evapotranspiration estimates by the "Copais" approach [J].
Alexandris, S ;
Kerkides, P ;
Liakatas, A .
AGRICULTURAL WATER MANAGEMENT, 2006, 82 (03) :371-386
[3]  
Allen R. G., 1998, FAO Irrigation and Drainage Paper
[4]  
Allen R.G., 1996, ASCE HDB HYDROLOGY, P125
[5]   Assessing integrity of weather data for reference evapotranspiration estimation [J].
Allen, RG .
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING-ASCE, 1996, 122 (02) :97-106
[6]   Reference evapotranspiration estimation in a highly advective semiarid environment [J].
Berengena, J ;
Gavilán, P .
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, 2005, 131 (02) :147-163
[7]   Using remotely sensed solar radiation data for reference evapotranspriation estimation at a daily time step [J].
Bois, B. ;
Pieri, P. ;
Van Leeuwen, C. ;
Wald, L. ;
Huard, F. ;
Gaudillere, J. -P. ;
Saur, E. .
AGRICULTURAL AND FOREST METEOROLOGY, 2008, 148 (04) :619-630
[8]   FIRST-ORDER APPROACH FOR ESTIMATING UNSTRESSED TRANSPIRATION FROM METEOROLOGICAL SATELLITE DATA [J].
CHOUDHURY, BJ ;
DEBRUIN, HAR .
SATELLITE MONITORING OF THE EARTH'S SURFACE AND ATMOSPHERE, 1995, 16 (10) :167-176
[9]  
De Bruin H.A.R., 1987, Evaporation and Weather, P5
[10]   Regional Advection Perturbations in an Irrigated Desert (RAPID) experiment [J].
De Bruin, HAR ;
Hartogensis, OK ;
Allen, RG ;
Kramer, JWJL .
THEORETICAL AND APPLIED CLIMATOLOGY, 2005, 80 (2-4) :143-152