[Wrf-users] ref_x and ref_y in geogrid

[David Smith]

Hi,

   In geogrid, when I leave ref_x and ref_y as default, the geogrid.log shows astronomically large numbers,

REF_X             = 100000002004087734272.000000
REF_Y             = 100000002004087734272.000000

so I have set them to the correct values (20 and 23 respectively).  It seems to make no difference in the successful execution of geogrid, but why are the default values (E_WE/2 and E_SN/2) ridiculously wrong numbers?  Does this indicate I have something disturbingly wrong somewhere or is this just an artifact?  I've posted the namelist.wps below.  Thanks!

&share
 wrf_core = 'ARW',
 max_dom = 3,
 start_date = '2013-08-12_00:00:00','2013-08-12_00:00:00','2013-08-12_00:00:00'
 end_date   = '2013-08-12_18:24:00','2013-08-12_18:24:00','2013-08-12_18:24:00'
 interval_seconds = 10800
 io_form_geogrid = 2,
/

&geogrid
 parent_id         =   1,   1,   2,   2
 parent_grid_ratio =   1,   3,   3,   3
 i_parent_start    =   1,  10,  10,   3
 j_parent_start    =   1,  10,  10,  21
 e_we              =  40,  61, 118,  88
 e_sn              =  46,  76, 163,  56
 geog_data_res     =  'modis_30s+10m','modis_30s+2m','modis_30s+30s','30s'
 dx = 9000,
 dy = 9000,
 map_proj = 'lambert',
 ref_lat   =  18.08,
 ref_lon   = -64.635,
 truelat1  =  16.0,
 truelat2  =  20.0,
 stand_lon = -65.0
 geog_data_path = 'geog'
/

&ungrib
 out_format = 'WPS',
 prefix = 'FILE',
/

&metgrid
 fg_name = 'FILE'
 io_form_metgrid = 2,
/



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