Description Usage Arguments Details Value Author(s) References See Also Examples
Function estimates Bristow-Campbell model coefficient 'B' based on reference data
1 |
lat |
Latitude in decimal degrees. |
days |
Vector of class 'Date' of length n. |
rad_mea |
Vector of length n containing reference (e.g. measured) solar radiation [MJm-2]. |
extraT |
Optional. Vector of length n of extraterrestrial solar radiation [MJm-2]. If 'NULL' then it is calculated by the function. Providing extraterrestrial solar radiation speeds up the computation |
BCc |
Bristow-Campbell model coefficient 'C' usually equaled to 2. |
Tmax |
Vector of length n containing daily maximum temperature [C]. |
Tmin |
Vector of length n containing daily minumum temperature [C]. |
tal |
Clear sky transmissivity. |
Function estimates Bristow-Campbell model coefficient 'B' based on reference (e.g. measured) solar radiation data. It performs a non-linear least squeres regression.
BCb |
Bristow-Campbell 'B' coefficient |
Jedrzej S. Bojanowski
Bristow, K.L., and G.S. Campbell. 1984. On the relationship between incoming solar radiation and daily maximum and minimum temperature. Agriculture and Forest Meteorology, 31:159-166.
'bc', and 'bcauto' to perform auto-calibration
1 2 3 4 5 6 7 |
BCb_nls
0.1052263
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