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 filefn = 'D:/Temp/hdf/FY3A_MERSI_GBAL_L3_ASL_MLT_GLL_20140331_AOAM_5000M_MS.HDF'f = addfile(fn)#Get data variablev = f['Aerosol_Optical_Thickness_of_MERSI_550nm']#Set x/yx = arange1(-30.0,7200, 0.05)y = arange1(-90.0,3600, 0.05)#Set x/y dimensionsv.setdim('Y', y, 0)v.setdim('X', x, 1)#Get data arrayaod = v[:,:]#aod = v[[15, 55],[70, 140]]aod = aod[::-1,:] / 10000.aod = aod[[15, 55],[70, 140]]#Plotaxesm()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)')