The main difference to the shortwave.aml and its derivatives are: (1) the use of a different base value (solar constant) for calculating the extraterrestrial direct normal radiation, and (2) the use of a different equation to cope with the attenuation of the beam radiation due to lower sun altitude. However, the shape of the function is very similar to the eqn. used in shortwave.aml.
The solarflux.aml consists of numerous subordinate AMLs that have to
be copied as well. Thus, this package is best downloaded as a compressed
version.
| Command: | &r solarflux [parameters] (at GRID prompt) |
| Required input: | DEM |
| Output units: | J/m2/time period |
| Solar constant used: | 1.353 kW/m2 |
| Transmittance used: | Selected upon start |
| Elevat. lapse rate for trans. | - |
| Minimum calculation step: | Any portion of a day |
| Speed of calculations: | Rather slow due to complex programming |
| Flexibility of the routine: | High; user has many options |
| User interface: | Very good |
| Known errors: | - |
| Corrections | - |
| Programmer | P. Rich & W.A. Hetrick |
| Available @: | zeke.kbs.ukans.edu |
| Download: | DOS-compressed
or UNIX-compressed file
READ.ME and an Installation guide (use: "save link as") |
| Contact: | niklaus.zimmermann @ wsl.ch |
References:
Dubayah, R. and Rich, P.M., 1995. Topographic solar radiation models for GIS. International Journal for Geographical Information Systems, 9(4): 405-419.Last Updated: 9/14/00Rich, P.M., Hetrick, W.A. and Savings, S.C., 1995. Modelling topographical influences on solar radiation: manual for the SOLARFLUX model. LA-12989-M, Los Alamos National Laboratories, Los Alamos.