Accession Number : AD0664227

Title :   THE ENERGY BUDGET AT THE EARTH'S SURFACE: ASSESSING SOURCES AND SINKS OF CARBON DIOXIDE IN A CORN CROP USING A MOMENTUM BALANCE APPROACH.

Descriptive Note : Interim rept.,

Corporate Author : AGRICULTURAL RESEARCH SERVICE ITHACA N Y SOIL AND WATER CONSERVATION RESEARCH DIV

Personal Author(s) : Lemon,E. R. ; Wright,J. L.

Report Date : JUL 1967

Pagination or Media Count : 26

Abstract : A momentum balance was used to estimate the vertical diffusivity of bulk air in a corn canopy. Simultaneous measurements of mean CO2 profiles enabled an evaluation of the source and sink (respiration and photosynthesis) distribution in the corn canopy. From the later data and light distribution data photoefficiency and light response were evaluated. (Author)

Descriptors :   (*CORN, PHOTOSYNTHESIS), (*CARBON DIOXIDE, MEASUREMENT), (*RESPIRATION, MEASUREMENT), AIR, DIFFUSION, ENERGY, DISTRIBUTION, MOMENTUM, WIND, VELOCITY, LIGHT, RESPONSE, INTENSITY, EXCHANGE REACTIONS, GAS FLOW, ATMOSPHERES

Subject Categories : Biochemistry
      Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE