OLCI Data Download

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avmehta
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OLCI Data Download

by avmehta » Wed Jun 09, 2021 3:05 pm America/New_York

Hello,
I have been downloading OLCI L1 data using the Ocean Color Web.
from 'select one or more region' I choose The Chesapeake Bay, select swaths and download data. I downloaded all available swaths for 2021 for this region. I find that occasionally some images are not in the Bay region but are centered around the Great Lakes! I am not entering any lat-lon boxes -- I just choose pre-defined region from the selection. Any explanation you can provide would be appreciated.
Thank you.
Amita

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OB.DAAC - SeanBailey
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Re: OLCI Data Download

by OB.DAAC - SeanBailey » Wed Jun 09, 2021 4:04 pm America/New_York

Without an example, I can't say. Do you have a specific file or at least a time period for a search that resulted in an erroneous spatial retrieval?

Sean

avmehta
Posts: 144
Joined: Mon Feb 03, 2020 10:27 am America/New_York

Re: OLCI Data Download

by avmehta » Mon Jun 14, 2021 3:14 pm America/New_York

Hi Sean,
Here is an example of OLCI image I got even though the area I picked was Chesapeake Bay.
Thanks.
Amita
Attachments
S3B-OLCI-0180_052_20210510T154017_reproj_rhos_620.png
S3B-OLCI-0180_052_20210510T154017_reproj_rhos_620.png (80.12 KiB) Not viewed yet

OB.DAAC - SeanBailey
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Re: OLCI Data Download

by OB.DAAC - SeanBailey » Wed Jun 16, 2021 10:47 am America/New_York

This is a case of a 'near miss'. The resolution of the bins used in the spatial matching is about 72km.
https://oceancolor.gsfc.nasa.gov/browse ... uadsphere/

The edge of this scene gets tantalizingly close to the Bay:
Screen Shot 2021-06-16 at 10.36.40 AM.png
Screen Shot 2021-06-16 at 10.36.40 AM.png (412.09 KiB) Not viewed yet
Sean

avmehta
Posts: 144
Joined: Mon Feb 03, 2020 10:27 am America/New_York

Re: OLCI Data Download

by avmehta » Wed Jun 16, 2021 11:40 pm America/New_York

Thank you Sean.
Amita

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