WRF用ncl画雷达反射因子图
时间: 2023-08-21 10:04:29 浏览: 313
绘制WRF的雷达反射因子图可以使用ncl中的"gsn_csm_contour_map"函数。以下是一个简单的示例代码,用于绘制雷达反射因子图:
```ncl
;打开WRF输出文件
f = addfile("wrfout_d01_2010-06-14_00:00:00","r")
;读取反射因子数据和经纬度数据
refl = f->REFL_10CM(0,:,:)
lat = f->XLAT(0,:,:)
lon = f->XLONG(0,:,:)
;定义绘图区域和投影方式
wks = gsn_open_wks("png","radar_refl")
res = True
res@gsnDraw = False
res@gsnFrame = False
res@mpGridAndLimbOn = False
res@mpProjection = "LambertConformal"
res@mpLambertParallel1F = 25
res@mpLambertParallel2F = 30
res@mpLambertMeridianF = -100
;定义绘图数据范围和颜色表
res@cnFillOn = True
res@cnFillPalette = "MPL_RdBu"
res@cnLevelSelectionMode = "ManualLevels"
res@cnMinLevelValF = -10
res@cnMaxLevelValF = 70
res@cnLevelSpacingF = 10
;绘制反射因子图
plot = gsn_csm_contour_map(wks, refl, lon, lat, res)
;添加标题和标签
res@tiMainString = "WRF雷达反射因子图"
res@lbTitleString = "反射因子(dBZ)"
res@lbLabelBarOn = True
res@lbTitleOffsetF = 0.1
res@tiMainFontHeightF = 0.02
res@lbLabelFontHeightF = 0.02
res@cnInfoLabelOn = False
;绘制图例
draw(plot)
frame(wks)
```
在上面的代码中,我们首先打开WRF输出文件,然后读取反射因子数据和经纬度数据。接下来,我们定义了绘图区域和投影方式,并设置了绘图数据范围和颜色表。最后,我们使用"gsn_csm_contour_map"函数绘制反射因子图,并添加了标题和标签。
需要注意的是,以上代码仅为示例,具体绘图参数需要根据您的数据和需求进行调整。
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