منابع مشابه
Soil profile method for soil thermal diffusivity, conductivity and heat flux: Comparison to soil heat flux plates
Diffusive heat flux at the soil surface is commonly determined as a mean value over a time period using heat flux plates buried at some depth (e.g., 5–8 cm) below the surface with a correction to surface flux based on the change in heat storage during the corresponding time period in the soil layer above the plates. The change in heat storage is based on the soil temperature change in the layer...
متن کاملHeat Flux Determination from Ultrasonic Pulse Measurements
Ultrasonic time of flight measurements have been used to estimate the interior temperature of propulsion systems remotely. All that is needed is acoustic access to the boundary in question and a suitable model for the heat transfer along the path of the pulse train. The interior temperature is then deduced from a change in the time of flight and the temperature dependent velocity factor, which ...
متن کاملUncertainty Due to Hygrometer Sensor in Eddy 1 Covariance Latent Heat Flux Measurements
9 Half-hour latent heat flux (LE) was measured over an early-maturing peach orchard 10 (Prunus persica L.) by two different hygrometers: 1) infrared gas analyzer (IRGA) (Li11 COR, model Li-7500); and 2) ultraviolet hygrometer (Campbell, KH20). A good 12 agreement between LE obtained with the IRGA (LEIRGA) and the KH20 (LEKH20) 13 hygrometers was observed. During rainy periods, LEIRGA and LEKH20...
متن کاملInfluence of Subgrid Variability on Soil Moisture and Latent Heat Flux
Soil hydrology is highly nonlinear. As surface soil becomes To characterize the subgrid variability in surface hydrology at saturated with water, excess water runs off in streams. If the the SGP site, we drive a land surface model (the parameters that influence surface soil water vary widely within Biosphere-Atmosphere Transfer Scheme [BATS]; Dickinson a general circulation model (GCM) grid cel...
متن کاملVariation of Latent Heat Flux and Canopy Temperature over Potato Crop Governed by Soil Moisture
The microclimate of plant communities varied with energy balance, turbulent exchange and thermal status of the soil surface. Available net radiation is the balance between incoming and outgoing radiation which is the main source of energy in the earth system. The balance of energy at the earth’s surface is closely associated with the overlying atmospheric boundary layer (Roxy et al., 2014). The...
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ژورنال
عنوان ژورنال: Agricultural and Forest Meteorology
سال: 2010
ISSN: 0168-1923
DOI: 10.1016/j.agrformet.2010.04.017