Description Usage Arguments Value Notes Warning References
View source: R/PriorCalculations.R
Soil texture influence based on re-analysis of data from Wythers et al. 1999.
Default of depth_max_bs_evap
= 15 cm from Torres et al. 2010.
1 | calc_BareSoilEvapCoefs(layers_depth, sand, clay, depth_max_bs_evap_cm = 15)
|
layers_depth |
A numeric vector, matrix, or data.frame. Values describe the lower soil layer depths in units of centimeters. |
sand |
A numeric vector, matrix, or data.frame. Values are sand contents in units of mass-percentage / 100. |
clay |
A numeric vector, matrix, or data.frame. Values are clay contents in units of mass-percentage / 100. |
depth_max_bs_evap_cm |
A numeric value. The maximal soil depth in centimeters from which bare-soil evaporation is potentially drawing moisture. |
A numeric matrix with potential bare-soil evaporation coefficients where rows correspond to sites and columns to soil layers.
Rows of soil input arguments layers_depth
,
sand
, and clay
correspond to sites and columns to soil
layers. If sand
and/or clay
are vectors, then they are
converted to 1-row matrices. If layers_depth
is a vector, then it is
converted to a matrix with as many sites/rows as sand
and
clay
have. That is the code assumes identical soil layer depths for
each site. All soil input arguments must have a the same number of sites
and of soil layers, i.e., identical matrix dimensions.
Influence of gravel is not accounted for.
Torres EA, Calera A (2010) Bare soil evaporation under high evaporation demand: a proposed modification to the FAO-56 model. Hydrological Sciences Journal- Journal des Sciences Hydrologiques, 55, 303-315.
Wythers K.R., Lauenroth W.K., Paruelo J.M. (1999) Bare-Soil Evaporation Under Semiarid Field Conditions. Soil Science Society of America Journal, 63, 1341-1349.
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