Hi, I generate 2 maps with r.sun (1 Jan), the first one setting albedo=0, and the second one setting albedo=2.0 but I received the same values (look at statistics calculated by r.univar). Why?
n: 2399778 minimum: 0 maximum: 5007.23 range: 5007.23 mean: 1847.94 mean of absolute values: 1847.94 standard deviation: 678.436 variance: 460275 variation coefficient: 36.7131 % sum: 4434638181.5777397156 1st quartile: 1567.93 median (even number of cells): 1825.47 3rd quartile: 2170.94 90th percentile: 2649.47 n: 2399778 minimum: 0 maximum: 5007.23 range: 5007.23 mean: 1847.94 mean of absolute values: 1847.94 standard deviation: 678.436 variance: 460275 variation coefficient: 36.7131 % sum: 4434638181.5777397156 1st quartile: 1567.93 median (even number of cells): 1825.47 3rd quartile: 2170.94 90th percentile: 2649.47 My goal is to generate a map for the exergy (available energy) of solar radiation, so I need a map without diffuse and reflected radiation. Is it correct to use r.sun and as output beam_rad or global_rad? and if I set the albedo to 2.0, is this effect added to the irradiation or is it subtracted? I hope I was clear… Thanks Salvatore _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
