[Landsat-pds] Landsat-pds Digest, Vol 24, Issue 1

[Ju, Junchang (GSFC-618.0)[UNIVERSITY OF MARYLAND]]

What you observed is true.   Unfortunately AWS is disappointing its users.

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Today's Topics:

   1. Syncing AWS and USGS Collection 1 archives (Scott Henderson)


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Message: 1
Date: Thu, 23 Aug 2018 22:14:16 -0700
From: Scott Henderson <scottyh at uw.edu>
To: landsat-pds at lists.osgeo.org
Subject: [Landsat-pds] Syncing AWS and USGS Collection 1 archives
Message-ID: <DC157B55-E840-4A14-875C-A93196A6633B at uw.edu>
Content-Type: text/plain; charset="utf-8"

I’ve noticed that Landsat on AWS is mostly “Pre-collection”. But coming from the USGS archive (e.g. Earth Explorer), I was expecting to find the same Collection-1 archive on AWS. Will the AWS archive be brought into sync with the USGS archive? Over what timeframe?
https://landsat.usgs.gov/may-10-2017-landsat-4-8-collection-1-processing-complete <https://landsat.usgs.gov/may-10-2017-landsat-4-8-collection-1-processing-complete>

As an example, for path 047 row 027 there is Collection-1 data that goes back to 2013, but the Collection-1 data on AWS is just to 03/2017 (https://landsatonaws.com/L8/047/027/ <https://landsatonaws.com/L8/047/027/>)

Scenes after 03/2017 match the Collection-1 scheme:
LC08_L1TP_047027_20170502_20170515_01_T1
https://landsat-pds.s3.amazonaws.com/c1/L8/047/027/LC08_L1TP_047027_20170502_20170515_01_T1/index.html <https://landsat-pds.s3.amazonaws.com/c1/L8/047/027/LC08_L1TP_047027_20170502_20170515_01_T1/index.html>

But all earlier scenes are pre-collection
LC08_L1TP_047027_20170331_20170414_01_T1
http://landsat-pds.s3.amazonaws.com/L8/047/027/LC80470272017090LGN00/index.html <http://landsat-pds.s3.amazonaws.com/L8/047/027/LC80470272017090LGN00/index.html>

A more detailed comparison is here:
https://gist.github.com/scottyhq/13aff1a37589baaf951b84ddea17f760 <https://gist.github.com/scottyhq/13aff1a37589baaf951b84ddea17f760>

Thanks for any insight!
Scott


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Scott Henderson
eScience Postdoctoral Fellow
Earth & Space Sciences
University of Washington
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