MODIS atmospheric correction.

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dingky
Posts: 37
Joined: Tue Jun 30, 2020 3:56 am
company / institution: China University of Geosciences
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MODIS atmospheric correction.

Post by dingky »

Hello everyone,


I have many problems when using polymer to process modis. :? :?
I would like to know how to do atmospheric correction for modis by polymer-v4.13.
How to deal with modis L0 data MODIS00.A2020317.0420_1.PDS? I don't know how to convert MODIS00.A2020317.0420_1.PDS into polymer input format. Can anyone help me :cry: :cry: :cry:


Thank you very much
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fsteinmetz
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Re: MODIS atmospheric correction.

Post by fsteinmetz »

Hello,
You can not use MODIS L0 files ; you need to use MODIS Level1A files, as can be found here : https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/L1 , and convert them to Level1C. Guidance is provided in Polymer's readme file, sections, 2.3.3 and 2.4.
Kind regards,
François
dingky
Posts: 37
Joined: Tue Jun 30, 2020 3:56 am
company / institution: China University of Geosciences
Location: China

Re: MODIS atmospheric correction.

Post by dingky »

Thank you for your suggestion,
I refer to the readme and enter the code:

Code: Select all

ding@ding-virtual-nachine:~/polyner-v4.13$ l2gen ifile=/home/ding/data/nodis/0323/A2020030091000.L1A_LAC ofile=/home/ding/data/nodis/0323/A2020030091000.L1C gain="1 1 1 1 1 1 1 1" oformat="netcdf4" l2prod="rhot_nnn polcor_nnn sena senz sola solz latitude longitude
But I don’t know why I haven’t received a response


kind regards,
ding
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fsteinmetz
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Re: MODIS atmospheric correction.

Post by fsteinmetz »

This is because your last quotation mark is not closed.
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