Author: Nader Katerji

0000000000713571

AUTHOR

Nader Katerji

showing 7 related works from this author

Radiative surface temperature and convective flux calculation over crop canopies

1988

The analysis presented in this paper aims at a better understanding of the potential role of radiative temperature, as measured by a radiometer over crops, in sensible heat flux calculation. Defining radiative temperature as the mean temperature of the surfaces viewed by the radiometer (leaves and soil surface) and assuming that an Ohm's law type formula can be used to express sensible heat flux as a function of the difference between air temperature and radiative temperature, the aerodynamic resistance which divides this temperature difference has been analytically defined. The parameters which appear in the resistance expression depend essentially on wind velocity and canopy structure but…

Atmospheric ScienceCOUVERT VEGETAL010504 meteorology & atmospheric sciencesMeteorologyPlanetary boundary layer[SDV]Life Sciences [q-bio]Sensible heat01 natural sciencesPhysics::GeophysicsRadiative fluxRadiative transferMean radiant temperatureFLUX THERMIQUEPhysics::Atmospheric and Oceanic PhysicsComputingMilieux_MISCELLANEOUS0105 earth and related environmental sciencesTEMPERATURE DE SURFACEPhysicsRadiometerBIOCLIMATOLOGIE04 agricultural and veterinary sciencesMechanicsMODELISATION[SDV] Life Sciences [q-bio]Heat fluxCONVECTIONHeat transfer040103 agronomy & agriculture0401 agriculture forestry and fisheries

researchProduct

A simple modelling of crop water balance for agrometeorological applications

1991

Abstract A simple agrometeorological model of crop water balance is presented. It aims at the best estimate possible of the water balance components with the simplest formulation and the minimum set of input data. The model works with a time step of one day and uses rainfall and the calculated evapotranspiration as the climatic inputs. Some soil and crop characteristics, such as the maximum available moisture and crop coefficients are required as input parameters. The model is tested using experimental data obtained on wheat and lucerne crops in the Paris region. The sensitivity of the model is discussed and some possible applications to rainfed crop management are presented.