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各位前辈好,有个问题想请教大家,我老师给了我一个wrfout数据,我用ncl查看了一下,相关信息如下(除去变量)里面的parent_id=3,parent_grid_ratio=3,这是什么意思,这是有几个嵌套?如果是一个的话不是应该是1么,如果是多个嵌套的话,为什么只有一列呢?
file global attributes:
TITLE : OUTPUT FROM WRF V2.2 MODEL
START_DATE : 2006-05-12_06:00:00
SIMULATION_START_DATE : 2006-05-10_00:00:00
WEST-EAST_GRID_DIMENSION : 244
SOUTH-NORTH_GRID_DIMENSION : 244
BOTTOM-TOP_GRID_DIMENSION : 40
DX : 2000
DY : 2000
GRIDTYPE : C
DYN_OPT : 2
DIFF_OPT : 1
KM_OPT : 4
DAMP_OPT : 0
KHDIF : 0
KVDIF : 0
MP_PHYSICS : 3
RA_LW_PHYSICS : 1
RA_SW_PHYSICS : 1
SF_SFCLAY_PHYSICS : 1
SF_SURFACE_PHYSICS : 1
BL_PBL_PHYSICS : 1
CU_PHYSICS : 0
SURFACE_INPUT_SOURCE : 1
SST_UPDATE : 0
GRID_FDDA : 0
GFDDA_INTERVAL_M : 0
GFDDA_END_H : 0
UCMCALL : 0
FEEDBACK : 1
SMOOTH_OPTION : 0
SWRAD_SCAT : 1
W_DAMPING : 0
PD_MOIST : 0
PD_SCALAR : 0
PD_TKE : 0
DIFF_6TH_OPT : 0
DIFF_6TH_FACTOR : 0.12
OBS_NUDGE_OPT : 0
WEST-EAST_PATCH_START_UNSTAG : 1
WEST-EAST_PATCH_END_UNSTAG : 243
WEST-EAST_PATCH_START_STAG : 1
WEST-EAST_PATCH_END_STAG : 244
SOUTH-NORTH_PATCH_START_UNSTAG : 1
SOUTH-NORTH_PATCH_END_UNSTAG : 243
SOUTH-NORTH_PATCH_START_STAG : 1
SOUTH-NORTH_PATCH_END_STAG : 244
BOTTOM-TOP_PATCH_START_UNSTAG : 1
BOTTOM-TOP_PATCH_END_UNSTAG : 39
BOTTOM-TOP_PATCH_START_STAG : 1
BOTTOM-TOP_PATCH_END_STAG : 40
GRID_ID : 4
PARENT_ID : 3
I_PARENT_START : 126
J_PARENT_START : 11
PARENT_GRID_RATIO : 3
DT : 10
CEN_LAT : 13.5817
CEN_LON : 121.0318
TRUELAT1 : 0
TRUELAT2 : 0
MOAD_CEN_LAT : 16.49999
STAND_LON : -85
GMT : 0
JULYR : 2006
JULDAY : 130
MAP_PROJ : 3
MMINLU : USGS
ISWATER : 16
ISICE : 0
ISURBAN : 0
ISOILWATER : 0
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