Accession Number:

AD0404130

Title:

THE ENERGY BALANCE OF NON-UNIFORM SOIL SURFACES,

Descriptive Note:

Corporate Author:

ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS

Personal Author(s):

Report Date:

1962-08-11

Pagination or Media Count:

10.0

Abstract:

A fluxometer has been developed for estimat ing the fluxes of latent and sensible heat from bare soil and short grass in any type of terrain. The fluxometer consists of two polyethylene covered tunnelm long, 30 cm wide, and 6 to 12 cm high. The floor of one is exposed to the soil surface the floor of the otir is covered with plastic, as a control. The latent and sensible heat fluxes can be determined from the wet- and dry-bulb temperatures of the air enter ing and leaving the exposed tunnel at a known rate. A comparison of hourly evaporation rates measured simultaneously with the fluxometer and with three precision weighing-type lysimeters at Tempe, Ariz., showed that the fluxometer usually gave lower evaporation rates than the lysimeters. A second experiment was conducted in a dry river channel is southeastern Arizona. Evaporation rates were measured during 18 days and agree well with estimates by other investi gators. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE