MOD11A2 Terra vs Aqua shift

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earthengine_urs
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MOD11A2 Terra vs Aqua shift

by earthengine_urs » Mon Apr 25, 2022 11:08 pm America/New_York

An Earth Engine user has reported that for MOD11A2 they see a shift between Terra and Aqua mosaics (see also https://storage.googleapis.com/earthengine-public/test/mod11a2.gif)

https://code.earthengine.google.com/5a96b4310d556f586cd45fa429edaef8

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LP DAACx - lien
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Re: MOD11A2 Terra vs Aqua shift

by LP DAACx - lien » Mon May 09, 2022 12:56 pm America/New_York

We will need to have an example set of Granule IDs to compare.

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Re: MOD11A2 Terra vs Aqua shift

by earthengine_urs » Thu Sep 26, 2024 5:43 am America/New_York

Hi There,

We have tried with random files and we see the same issue in these two datasets.

MYD11A2.A2022249.h12v10.061.2022258145454.hdf
MOD11A2.A2022249.h12v10.061.2022258143859.hdf

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Re: MOD11A2 Terra vs Aqua shift

by LP DAACx - lien » Fri Sep 27, 2024 9:45 am America/New_York

Hello,
Can you give me more specifics about the offset. How many meters do you figure it is, I am not seeing it in the archived tiles, but I may not be looking in the right place.
Thanks,
Brett

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Re: MOD11A2 Terra vs Aqua shift

by earthengine_urs » Mon Sep 30, 2024 8:50 am America/New_York

Hi There,

We're seeing 1-2 pixel shifts. As each pixel represents 1000 meters so that is the displacement.

You can refer to the script

https://code.earthengine.google.com/67dac3a2dbc456730fd15363ef870a1f

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Re: MOD11A2 Terra vs Aqua shift

by LP DAACx - dgolon » Mon Sep 30, 2024 10:40 am America/New_York

Hi @earthengine_urs We do not have access to see that code. Could you please send us a screen shot of the data that shows the shift? If the file is too large to send of the forum, please feel free to send it via email to lpdaac@usgs.gov. We have downloaded those scenes from our archive, but we are not seeing any shift in the pixels. Thanks -- Danielle
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