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Nieuwe Landsat Collection 2 beeldservices

EmilyWindahl

In het voorjaar van 2021 zal Esri nieuwe Landsat beeldservices introduceren, bestaande uit Landsat 8, Collection 2 Level-2 beelden die door de USGS in december 2020 zijn uitgebracht. Deze nieuwe services zullen niet alleen alle kwaliteitsverbeteringen van Collection 2 bevatten, maar ook gebruikers voorzien van atmosferisch gecorrigeerde en analyse-klaar beelden met de extra upgrade van Level-1 naar Level-2 producten.<\/P>

Het oorspronkelijke plan was om de bestaande services af te schaffen, maar het blijkt dat we <\/SPAN>niet<\/STRONG> <\/SPAN>de bestaande services zullen afschaffen, uiteindelijk. We zullen alle bestaande Landsat Level-1 beeldservices blijven ondersteunen en bijwerken naast het publiceren van de nieuwe Level-2 service.<\/SPAN><\/P>Voor meer details, bekijk Introducing Landsat Collection 2.<\/P>

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MattWilkie1

Thank you for the clarification @RWaterman. So is my revised understanding correct: it is not possible to narrow to a specific pre-Landsat 8 year, say 1987, using existing ArcGIS Online services?

Background: we have staff who are using Google Earth Engine to extract specific historical years from Landsat going back to 1984 for analysis in ArcGIS Desktop. It's created an administrative storage and management problem in the filesystem as people cache their own idiosyncratic copies. I'm looking at options alleviate this overhead.

RWaterman

@MattWilkie1 , we will have the new Collection 2 service available very soon to provide as much overlap and transition time as we possibly can.

We will post details in the blog post Emily noted as soon as the new service is available: Introducing Landsat Collection 2 and retiring Collection 1.

The new service is just Landsat 8 Collection 2 (as replacement for the existing Landsat 8 Collection 1).

MattWilkie1

It doesn't like there is to be any service availability overlap between Collection 1 retiring and Collection 2 being brought online. Is that right? We're only a few weeks away from C1 going away and I haven't found any C2 availability. How are we to prep for the change? What do we do with new projects being created now that seek to use these services? Is historical landsat 4&5 going to be in the C2 service or is just LS8? (At only every 5 years the GLS service is temporally coarser grained than what we're looking for.)

Thanks!

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