Method for inverting ground surface temperature through VIIRS data
A technology of surface temperature and data, applied in radiation pyrometry, ICT adaptation, electromagnetic wave re-radiation, etc., can solve problems such as affecting inversion accuracy, and achieve the effect of simplified calculation and efficient operation of business operation.
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[0033] The VIIRS data of the Chinese region imaged at 05:16 (UTC) on September 26, 2013, and the Aqua MODIS data of the Chinese region at 05:35 (UTC) on September 26, 2013 were used for specific measurements.
[0034] The first step is to calculate the regional water vapor corresponding to VIIRS from the MODIS water vapor data.
[0035] 1-1) Perform projection conversion on MODIS and VIIRS data, and use the equal longitude and latitude search method to obtain VIIRS water vapor data. This invention is implemented by programming under ENVI, mainly using the envi_convert_file_coordinates function.
[0036] 1-2) Look up the transmittance of VIIRS M15 and M16 channels through the MODTRAN water vapor transmittance lookup table. Table 2 lists the transmittance under some atmospheric water vapor contents.
[0037] Water vapor / g.cm -2 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 3.60 4.00 4.40 4.80 M15 transmittance 0.94 0.91 0.88 0.84 0.80 0.75 0.70 0.65...
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