论文信息 - Night-time evapotranspiration vs. daytime and 24h evapotranspiration

Night-time evapotranspiration vs. daytime and 24h evapotranspiration

Abstract The continuous measurement of night-time ETa,n (sunset to sunrise), daytime ETa,d (sunrise to sunset) and 24h ETa,24h alfalfa evapotranspiration was carred out, using the Bowen ratio-energy balance method, in a closed mountainous semi-arid irrigated valley in northern Utah. The results indicate that ET a,n ET a ,24 h was 2.93 mm 173.87 mm , or about 1.7%, during a complete growing cycle of alfalfa in August and September 1991. The results also show that this ratio could be very high (about 14%) when the night-time wind speed is high.

Esmaiel Malek | E. Malek

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