lecture_04 - LECTURE 4: EVAPOTRANSPIRATION 4.0 FACTOR...

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H r H a H s x 100% E 0 I O ± ) S LECTURE 4: EVAPOTRANSPIRATION 4.0 FACTOR AFFECTING EVAPORATION IN A BASIN SOURCE AND AVAILABILITY OF WATER SOLAR RADIATION SATURATION DEFICIT WIND PREVAILING WEATHER PATTERNS 4.1 TERMS ASSOCIATED WITH EVAPORATION ABSOLUTE HUMIDITY H a SATURATION HUMIDITY H s RELATIVE HUMIDITY H r LATENT HEAT OF VAPORIZATION + 590 CALORIES/ GRAM LATENT HEAT OF CONDENSATION - 590 CALORIES/GRAM LATENT HEAT OF FUSION - 80 CALORIES/GRAM DEW POINT TEMPERATURE 4.2 METHODS FOR EVAPORATION ESTIMATION WATER BUDGET MEASUREMENT
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E = OPEN WATER EVAPORATION o I = INFLOW (DISCHARGE, PRECIP, RUNOFF) O = OUTFLOW (DISCHARGE, SEEPAGE) ) S = CHANGE IN STORAGE PHYSICAL MEASUREMENT MASS TRANSFER METHOD CLASS A PAN (48" DIAM., 10" DEEP) CORRECTION FACTOR NOMOGRAPH MEASUREMENTS FACTORS MEAN DAILY TEMPERATURE SOLAR RADIATION MEAN DAILY DEW PIONT TEMPERATURE WIND MOVEMENT 4.3 FACTORS AFFECTING TRANSPIRATION AND EVAPOTRANSPIRATION IN A BASIN TYPE AND DISTRIBUTION OF VEGETATION
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lecture_04 - LECTURE 4: EVAPOTRANSPIRATION 4.0 FACTOR...

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