TY - JOUR
T1 - Solar radiation and evapotranspiration in northern Mexico estimated from remotely sensed measurements of cloudiness
AU - Garatuza-payan, Jaime
AU - Pinker, Rachel T.
AU - Shuttleworth, W. James
AU - Watts, Christopher J.
N1 - Funding Information:
Acknowledgements Primary support for the preparation of this paper came from NASA Project NAG8-1531. Additional support came from NASA-EOS Interdisciplinary Science Project OSS A-A/88. The GOES and ground data were gathered as part of research supported by the European Community under contracts CI1*-CT91-0900 and CIl*-CT94-0059. In addition, J. Garatuza received support under a CONACYT Fellowship and the eddy correlation data were gathered as part of research supported under a CONACYT grant. The work of R.T. Pinker was supported under NOAA grant NA86GOP202 and NASA grant NAG56667. The editorial assistance provided by Corrie Thies is much appreciated.
PY - 2001
Y1 - 2001
N2 - Components of a satellite-based system for estimating the crop water requirements of irrigated vegetation were brought together, applied, and tested against field data. The operational framework for obtaining cloud cover was developed and applied, using hourly sampled, 1-km resolution, GOES-7 data as received in real time in Obregon, Mexico. The cloud-screening procedure was used to derive half-hourly estimates of solar radiation from satellite data for the Yaqui Valley irrigation scheme near Ciudad Obregon in Sonora, Mexico for the period November 1998-March 1999. Estimates were made on a 4-km grid using a high-resolution development of the Global Energy and Water-Cycle Experiment Surface Radiation Budget (GEWEX/SRB) algorithm applied with GOES-West satellite data. The values derived from the satellite data were, on average, about 9% lower than field measurements made at two sites located in the irrigated region. After re-calibration, the estimates derived from GOES-West were used to compute evapotranspiration using the Makkink equation and locally derived crop coefficients. The results show that it is possible to make high resolution near real-time estimations of crop evaporation for cotton and wheat, the two most important crops grown in the Yaqui Valley.
AB - Components of a satellite-based system for estimating the crop water requirements of irrigated vegetation were brought together, applied, and tested against field data. The operational framework for obtaining cloud cover was developed and applied, using hourly sampled, 1-km resolution, GOES-7 data as received in real time in Obregon, Mexico. The cloud-screening procedure was used to derive half-hourly estimates of solar radiation from satellite data for the Yaqui Valley irrigation scheme near Ciudad Obregon in Sonora, Mexico for the period November 1998-March 1999. Estimates were made on a 4-km grid using a high-resolution development of the Global Energy and Water-Cycle Experiment Surface Radiation Budget (GEWEX/SRB) algorithm applied with GOES-West satellite data. The values derived from the satellite data were, on average, about 9% lower than field measurements made at two sites located in the irrigated region. After re-calibration, the estimates derived from GOES-West were used to compute evapotranspiration using the Makkink equation and locally derived crop coefficients. The results show that it is possible to make high resolution near real-time estimations of crop evaporation for cotton and wheat, the two most important crops grown in the Yaqui Valley.
KW - Cloud screening
KW - Evaporation
KW - Evapotranspiration
KW - Irrigation
KW - Makkink
KW - Mexico
KW - Remote sensing
KW - Sonora
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U2 - 10.1080/02626660109492839
DO - 10.1080/02626660109492839
M3 - Article
AN - SCOPUS:0035369370
SN - 0262-6667
VL - 46
SP - 465
EP - 478
JO - Hydrological Sciences Journal
JF - Hydrological Sciences Journal
IS - 3
ER -