Daily greenery changes monitoring through MOD09GQ

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Daily greenery changes monitoring through MOD09GQ

by 5479584.asdf » Thu Jul 28, 2022 11:32 pm America/New_York

Hi,

I want to monitor the daily changes in greenery with a 250m resolution. Can I do that with MOD09GQ?
I also want to calculate the NDVI. Could you please provide me a data set with output files so that I can practise an example?

Thank you.

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LP DAAC - lien
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Re: Daily greenery changes monitoring through MOD09GQ

by LP DAAC - lien » Wed Aug 03, 2022 12:16 pm America/New_York

Hi,
The MOD/MYD09GQ product is used to create the MOD/MYD09Q1 8 day product and that is used as input data to process the MOD13Q1 Vegetation indices. So yes you could use it to process NDVI data. You can download the MOD09GQ product from our Data Pool server: e4ftl01.cr.usgs.gov.
Thanks,
Brett

5479584.asdf
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Re: Daily greenery changes monitoring through MOD09GQ

by 5479584.asdf » Fri Aug 05, 2022 1:38 am America/New_York

Thank you for the answer.

I'm a research student who's just getting started in the field of remote sensing and GIS. Therefore I kindly request your valuable support to solve my question.

I downloaded the MODIS band 1 and band 2 files using https://ladsweb.modaps.eosdis.nasa.gov/search/ in tif format.

Then I calculated the NDVI using band 2 and band 1. But my NDVI value range is -119 to 141.

Please help me to solve this matter.
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