Develop a Remote Sensing Tool to Estimate Evaporation Loss from Reservoirs. Junming Wang, Ted Sammis, Vince Gutschick Department of Plant and Environmental Sciences New Mexico State University Ramiro Lujan
Junming Wang, Ted Sammis, Vince Gutschick
Department of Plant and Environmental Sciences
New Mexico State University
Comisión Internacional de Límites y Aguas (CILA, the Boundary and Water Commission in Mexico)
2008 SCERP Annual Technical Conference, Arizona State University Memorial Union Tempe, Arizona, December 5-6, 2008
A treaty requires that US (Mexico) delivers certain amount water to Mexico (US) each year.
However, in some drought years, it may not be followed. Farmers complained.
Mexico had amassed a water deficit to the US since 1992 that reached 1.5 million acre-feet at its highest point, costing U.S. agricultural producers in the Rio Grande Valley $1 billion.
Elephant Butte Lake
Figure 1. Map of Elephant Butte Reservoir and Las Cruces area, NM, USA.
pan measurement method,
or eddy covariance method
are time- and labor-intensive
and one point measurement can not integrate the spatial variability of lake evaporation.
Build the ASTERModel
ETins = Rn - G - H
Graph from Allen, et. al., (2002)
Start from Reservoirs
Build the ASTER Model
Satellite inputs: surface temperature and reflectance.
Local weather inputs: solar radiation, humidity and wind speed
G=f(NDVI, solar radiation, reflectance)
H=f(NDVI, temperature, reflectance, solar radiation, wind speed)
Build the ASTER Model from ReservoirsValidate the modelMeasurement sites
Validate the ASTER Model from ReservoirsET measurement
Validate the ASTER Model from ReservoirsET map
Validate the ASTER Model from ReservoirsThe pecan ET of simulation vs. observation.
Validate the ASTER Model from Reservoirs
ETins = Rn - G - H
mm from Reservoirs
Figure 5. Modelled ET from MODIS data taken on June 8, 2005. ET unit: mm/day.
ET values obtained from MODIS data compared with the ET values from ASTER data at Las Cruces, NM, USA for June 8, 2005, September 7, 2003, May 18, 2003, and September 4, 2002, .
Referred Journal Paper
Wang, J. and T. W. Sammis. 2008. Sensitivity Analysis on Remote Sensing Evapotranspiration Algorithm-Surface Energy Balance Algorithm for Land. ASABE Transaction. Submitted.
Wang, J., T.W. Sammis, and V.P. Gutschick. 2008. Review of Satellite Remote Sensing Use in Forest Health Studies. Applied Remote Sensing. Submitted.
Wang, J., T.W. Sammis, and V.P. Gutschick. 2008. Remote Sensing of Water Body Evaporation. Applied Remote Sensing. Submitted.
Wang, J. and T. W. Sammis. 2008. New Automatic Band and Point Dendrometers for Measuring Stem Diameter Growth. ASABE Ag. Engineering. In press.
Wang, J., T.W. Sammis, and V.P. Gutschick. 2008. A Model Estimating Lake Evaporation Using MODIS Data. International Geoscience and Remote Sensing Symposium. 2008 IEEE International Geoscience & Remote Sensing Symposium. July 6-11. 2008. Boston, Massachusetts, U.S.A.
Wang, J., T.W. Sammis, and V.P. Gutschick. 2008. A Remote Sensing Model Estimating Water Body Evaporation. 2008 International Workshop on Earth Observation and Remote Sensing Applications. June30-July2. Beijing, China.
Thank You! values from ASTER data at Las Cruces, NM, USA for June 8, 2005, September 7, 2003, May 18, 2003, and September 4, 2002, .