Meteo BCs

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Hydrus-1D Projects - Meteo

Project Group: Meteo
Description: Examples demonstrating new options in Hydrus-1D for evaluating atmospheric boundary conditions, including those based on meteorological variables.
Availability: Download Test2 examples now (0.8 MB), Download EnBal examples now (1.16 MB), Download Periodic example now (1.07 MB)

Project	Description
Test2LAIa	This example closely corresponds with the Test2 example from the Direct work group, described in the manual. However, potential values of evaporation and transpiration are calculated internally by HYDRUS using the Bear’s law from entered potential values of evapotranspiration and LAI.
Test2LAIb	The same as Test2LAIa, except that daily variations of transpiration and precipitation are generated by HYDRUS.
Test2LAIc	The same as Test2LAIa, except that rooting depths are specified.
Test2Met1	Similar as Test2LAIa, except that Potential evaporation and potential transpiration are calculated using the Penman-Monteith combination equation (from solar radiation and other meteorological variables), the rooting depth is specified.
Test2Met2	Similar as Test2LAIa, except that Potential evaporation and potential transpiration are calculated using the Penman-Monteith combination equation (from potential radiation and other meteorological variables), the rooting depth is specified.
EnBal1a	Surface energy balance for the experimental site in Riverside, CA, is evaluated based on the input of daily values of solar radiation. Daily variations of meteorological variables are generated using meteorological models.
EnBal1b	Surface energy balance for the experimental site in Riverside, CA, is evaluated based on the input of the transmission coefficient and calculated daily potential radiation. Daily variations of meteorological variables are generated using meteorological models.
EnBal1c	Surface energy balance for the experimental site in Riverside, CA, is evaluated based on the input of daily values of solar radiation and the transmission coefficient. Daily variations of meteorological variables are generated using meteorological models.
EnBal2a	Surface energy balance for the experimental site in Riverside, CA, is evaluated based on the input of hourly values of solar radiation.
EnBal2b	Surface energy balance for the experimental site in Riverside, CA, is evaluated based on the input of hourly values of solar radiation and the transmission coefficient.
PMDay	Evaporation for the experimental site in Riverside, CA, is evaluated using the Penman-Monteith equation based on the input of daily values of solar radiation. Daily variations of meteorological variables are generated using meteorological models.
Periodic	Example demonstrating the use of a set of boundary conditions multiple times. In this particular example, a one year long set (365 d) of BCs is used 5 times.

EnBal examples are based on the experimental data reported by Saito et al. (2006).

Saito, H., J., J. Šimůnek, and B. Mohanty, Numerical analyses of coupled water, vapor and heat transport in the vadose zone, Vadose Zone Journal, 5, 784–800, 2006.