felfelan@egr_msu_edu
New Member
Dear all, I have a problem with understanding the order of simulation of grid cells which I would greatly appreciate your help.I am running the CESM 1.2 for an offline CLM simulation with compset of “ICRUCLM45BGCCROP” and new grid of 3x3 arc minute (0.05 deg) over the central USA (LAT: 30~50 and LON: -90W~-116W which 244 thru 270 in CLM convention). For some data assimilation coding I need to specify adjacent cells of each cell (in latitude and longitude direction). So I printed the grid cells and their latitude and longitude in the first processor (Proc0: simulating the grid cells in LAT: 30 ~ 50 and LON 244 ~ 246) which I figured out that the longitude increment is fine and equal to 0.05 degree but the latitude increments are 1 degree! I doubted maybe other processors simulating the cells in between, but when I printed the begg and endg of each processor, I saw that each processor simulates the cells placing in the following longitudes of processor 0(i.e., proc 1: LAT: 30 ~ 50 and LON 246 ~ 248; proc 2: LAT: 30 ~ 50 and LON 248 ~ 250; etc.). Do you have any idea why the latitude increment is 1 degree? I attached the file where I put the writing command (line 793) and also the cesm log. A part of the log is attached below: Processor Num: g, lat(g), lon(g) 0 1 30.024999999999999 244.02500000000001 Processor Num: g, lat(g), lon(g) 0 2 30.024999999999999 244.07500000000002 Processor Num: g, lat(g), lon(g) 0 3 30.024999999999999 244.12500000000000 Processor Num: g, lat(g), lon(g) 0 4 30.024999999999999 244.17500000000001 …… Processor Num: g, lat(g), lon(g) 0 38 30.024999999999999 245.87500000000000 Processor Num: g, lat(g), lon(g) 0 39 30.024999999999999 245.92500000000001 Processor Num: g, lat(g), lon(g) 0 40 30.024999999999999 245.97499999999999 Processor Num: g, lat(g), lon(g) 0 41 30.024999999999999 246.02500000000001 Processor Num: g, lat(g), lon(g) 0 42 31.024999999999999 244.02500000000001 Processor Num: g, lat(g), lon(g) 0 43 31.024999999999999 244.07500000000002 Processor Num: g, lat(g), lon(g) 0 44 31.024999999999999 244.12500000000000 Processor Num: g, lat(g), lon(g) 0 45 31.024999999999999 244.17500000000001 Processor Num: g, lat(g), lon(g) 0 46 31.024999999999999 244.22499999999999 RegardsFarshid