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Nuevos servicios de imágenes Landsat Collection 2

EmilyWindahl

En la primavera de 2021, Esri introducirá nuevos servicios de imágenes Landsat compuestos por imágenes Landsat 8, Collection 2 Level-2 lanzadas por el USGS en diciembre de 2020. Estos nuevos servicios no solo incluirán todas las mejoras de calidad de Collection 2, sino que también proporcionarán a los usuarios imágenes corregidas atmosféricamente y listas para análisis con la actualización adicional de productos Level-1 a Level-2.<\/P>

El plan original era retirar los servicios existentes, pero resulta que <\/SPAN>no<\/STRONG> <\/SPAN>retiraremos los servicios existentes, después de todo. Continuaremos apoyando y actualizando todos los servicios de imágenes Landsat Level-1 existentes además de publicar el nuevo servicio Level-2<\/SPAN>.<\/P>Para más detalles, consulta Introducción a Landsat Collection 2<\/A>.<\/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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