为什么使用vector画出的放大1000倍后的图不一样

樱花阿喵

我从wrfout文件里面读取变量名为DTAUX3D和DTAUY3D的拖曳力，并插值到500hPa ,使用gsn_csm_vector画出图后数值太小，想要扩大1000倍，结果两个图完全不一样，但是填色底图是一样的，有没有大神可以指点一下（上面是扩大1000倍后的结果）



附上我的部分脚本，被注释掉的是放大1000倍的代码
dragu = f1[:]->DTAUX3D
dragv = f1[:]->DTAUY3D


p1 = wrf_user_getvar(f1, "pressure", -1)

;;;interp to 500hPa
dragu_plane = wrf_user_intrp3d(dragu,p1,"h",500,0.0,False);;;time ,lat,lon
dragv_plane = wrf_user_intrp3d(dragv,p1,"h",500,0.0,False)


delete(dragu)
delete(dragv)
delete(p1)

;;;插值到ERA5网格点上
lat2d = f1[0]->XLAT(0,:,:)
lon2d = f1[0]->XLONG(0,:,:)
hgt = f1[0]->HGT(0,:,:)

lat = fspan(25, 46, 85)
lon = fspan(62, 107, 181)
dugrid = rcm2rgrid(lat2d, lon2d, dragu_plane, lat, lon, 0)
dvgrid = rcm2rgrid(lat2d, lon2d, dragv_plane, lat, lon, 0)
hgtgrid = rcm2rgrid(lat2d, lon2d, hgt, lat, lon, 0)

;;;求时间平均
du_avgt = dim_avg_n(dugrid, 0)
dv_avgt = dim_avg_n(dvgrid, 0)
dw_avgt = sqrt(du_avgt^2+dv_avgt^2)
;du_avgt = du_avgt*1000
;dv_avgt = dv_avgt*1000
;dw_avgt = dw_avgt*1000

;;;赋值坐标变量
du_avgt!0 = "lat"
lat@units = "degrees_north"
du_avgt&lat = lat
du_avgt!1 = "lon"
lon@units = "degrees_east"
du_avgt&lon = lon


copy_VarCoords(du_avgt, dv_avgt)
copy_VarCoords(du_avgt, dw_avgt)
copy_VarCoords(du_avgt, hgtgrid)