FY3A卫星有HDF格式的AOD产品数据，全球范围，分辨率为0.05度。读取数据文件变量后要重新设定X/Y维，数据是Y轴反向的，且需要除以10000得到AOD值。
脚本程序：
#Add data file fn = 'D:/Temp/hdf/FY3A_MERSI_GBAL_L3_ASL_MLT_GLL_20140331_AOAM_5000M_MS.HDF' f = addfile(fn) #Get data variable v = f['Aerosol_Optical_Thickness_of_MERSI_550nm'] #Set x/y x = arange1(-30.0,7200, 0.05) y = arange1(-90.0,3600, 0.05) #Set x/y dimensions v.setdim('Y', y, 0) v.setdim('X', x, 1) #Get data array aod = v[:,:] #aod = v[[15, 55],[70, 140]] aod = aod[::-1,:] / 10000. aod = aod[[15, 55],[70, 140]] #Plot axesm() world = shaperead('D:/Temp/map/country1.shp') china = shaperead('D:/Temp/map/bou2_4p.shp') geoshow(china, edgecolor='gray') geoshow(world) levs = arange1(0, 20, 0.05) cols = makecolors(21, cmap='matlab_jet') cols[0] = 'w' layer = imshowm(aod, levs, colors=cols) colorbar(layer) title('FY-3A AOD (2014-03-31)')
