[GRASS-user] Convert Landsat temperature into Kelvin

[Niels Thevs]

Hi,

thanks, it worked fine after the Landsat handbook.

Niels


Jose Gomez-Dans schrieb:
> Hi
> 
> On 29 January 2010 15:42, Niels Thevs <thevs at uni-greifswald.de 
> <mailto:thevs at uni-greifswald.de>> wrote:
> 
>     is there an algorithm, which converts Landsat band 61 temperature
>     data into Kelvin ? I tried to approach this problem by establishing
>     a relationship between MODIS data and Landsat, but i did not work out.
> 
> 
> I'm not sure what you mean, but have you converted your DN into 
> randiance and then into temperature using the steps outlined in 
> <http://landsathandbook.gsfc.nasa.gov/handbook/handbook_htmls/chapter11/chapter11.html#section11.3.3>? 
> This gives you TOA radiance, which you then need to convert into ground 
> radiance. From there, and using Planck's function, you convert it to 
> surface temperature. The tricky bit is to conver the TOA into BOA 
> radiances, which requires you to do a bit of atmospheric 
> characterisation/correction.
> 
> Hope that helps,
> Jose
> 
> -- 
> 
> RSU ■ Dept. of Geography ■ University College ■ Gower St, London WC1E 6BT UK
> 
> EMM ■ Dept. of Geography ■ King's College ■ Strand, London WC2R 2LS UK
> 
> 


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Dr. Niels Thevs
Institute of Botany and Landscape Ecology
Greifswald University
Grimmer Strasse 88
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Germany

Tel.: +49-3834-86-4131
Fax:  +49-3834-86-4114

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