Changes between Version 1 and Version 2 of Processing/BrightnessTemperature


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Timestamp:
Nov 17, 2008 2:20:04 PM (11 years ago)
Author:
mggr
Comment:

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  • Processing/BrightnessTemperature

    v1 v2  
    1 == Calculation of (brightness) temperature from ATM band 11 ==
     1= Brightness temperature =
    22
    3 This guide assumes you have an ATM level 1b dataset, access to IDL and the IDL routines supplied by us.
     3The data stored in the level 1b HDFs as delivered is radiance data, scaled by a multiplier (almost always 1000, but check the radsc vector in the HDF to be sure).  Many people will wish to convert this to temperature.  This requires a computation, of which there is an example below.
     4
     5This guide assumes you have an ATM level 1b dataset, access to IDL and the IDL routines supplied by us (see attachments on this page).
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    57== Setting up ==
    6 
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    89Make sure the supplied routines (get_atm_temp.pro, l_band.pro, lbb.pro, t_bb.pro) are in a directory seen by your IDL path. If necessary you can add to this path. For instance, if you put them in /users/me then on the IDL command line you could type "print,!path" to see what's in the path already, then "!path='/users/me:'+!path" to add a directory to the path.