Meteorological data used in this study were collected over 21 locations in South Korea by the Korea Meteorological Adminstration (KMA) for last 10 years. Using mean values of four meteorological factors (air temperature, wind speed, relative humidity and solar radiation) for the period from January 1, 1991 to December 31, 2000 values of the relative sensitivity were calculated, and error analysis was performed. Relative sensitivity was examined to compare the importance of four meteorological and flux variables on Penman potential evapotranspiration (PET) estimation. The study results show that on the whole, solar radiation is the most sensitive meteorological factor and wind speed is the least sensitive meteorological factor for most of measurement locations. The sensitivity of evapotranspiration rates to changes in humidity is less in the inland areas than in the coastal areas. The evapotranspiration error values indicate that the meteorological factor measurement error is very small compared with the mean daily evapotranspiration.
A sensitivity and error analysis for the penman evapotranspiration model
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 8 , 2 ; 249-254
2004-03-01
6 pages
Article (Journal)
Electronic Resource
English
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