res@mpLimitMode = "LatLon"
res@mpMinLatF = 0.
res@mpMaxLatF = 30.
res@mpMinLonF = 110.
res@mpMaxLonF = 230.
res@cnFillMode ="RasterFill"
res@cnRasterSmoothingOn = True
res@sfXArray=lat_aux_grid
res@sfYArray=moc_z/100
res@gsnYAxisIrregular2Linear=True ;Most vertical axis are irregular. We can display them as a linear axis by setting gsnYAxisIrregular2Linear = True
res@trYReverse=True ;倒转Y轴
res@tmYLMode = "Explicit"
res@tmYLValues = (/0,1000,2000,3000,4000,5000/)
res@tmYLLabels = "" + res@tmYLValues