Search found 17 matches
- Wed May 28, 2025 9:08 am America/New_York
- Forum: Home
- Question: Harmonized Landsat Sentinel-2 (HLS) Version 2.0
- Replies: 2
Re: Release of Harmonized Landsat Sentinel-2 (HLS) Version 2.0
I am a bit confused, hasn't HLS 2.0 been available for some time now and is already fully back-processed?
- Thu Feb 20, 2025 9:35 am America/New_York
- Forum: Home
- Question: HLSS30_VI v002- Non availability of data prior to 2025
- Replies: 2
Re: HLSS30_VI v002- Non availability of data prior to 2025
From the announcement (https://lpdaac.usgs.gov/news/lp-daac-release-of-harmonized-landsat-and-sentinel-2-vegetation-indices-hls-vi-data-products/): "Data are currently available for February 2025 through the present with forward processing continuing as new observations are collected. Historica...
- Mon Oct 21, 2024 9:23 am America/New_York
- Forum: Home
- Question: Certain HLS (S30) granule(s) lack imagery
- Replies: 7
Re: Certain HLS (S30) granule(s) lack imagery
Thanks Danielle for the answer!
- Thu Sep 26, 2024 10:31 am America/New_York
- Forum: Home
- Question: Certain HLS (S30) granule(s) lack imagery
- Replies: 7
Certain HLS (S30) granule(s) lack imagery
Hello, I am working with the HLS product and have noticed cases where certain granules, more so S30 than L30, lack imagery compared to surrounding granules. Take this example from Hudson Bay Lowlands in Canada (around 54.50479,-83.08301): S30_granule_issue.jpg This shows a 180 x 180 km squared area,...
- Wed Jun 05, 2024 9:14 am America/New_York
- Forum: Home
- Question: HLS 2.0 granules for almost any December day are missing
- Replies: 8
Re: HLS 2.0 granules for almost any December day are missing
Is this a higher latitude area? Landsat and Sentinel-2 image collection decreases significantly during the winter (esp. December/January) in higher latitude areas. For example, above ~50N you will find very few (if any) images during those months (at least in Canada). I assume this is due to lower s...
- Thu May 30, 2024 8:21 am America/New_York
- Forum: Home
- Question: Unexpected behaviour with HLS in LPCLOUD
- Replies: 10
Re: Unexpected behaviour with HLS in LPCLOUD
The errors I get in search may be related to my network (I work on a restricted government network, which has made working with STAC data a bit cumbersome in some cases - requiring SSL workarounds etc.). For that tutorial, I manually searched through the STAC links for the HLS catalogs. At the time,...
- Tue May 28, 2024 1:12 pm America/New_York
- Forum: Home
- Question: Unexpected behaviour with HLS in LPCLOUD
- Replies: 10
Re: Unexpected behaviour with HLS in LPCLOUD
I have generally kept my searches to smaller areas (I generally use a fishnet of tiles and do my processing one tile at a time - currently using 60 km tiles), but longer/more dense in time (e.g., all available time-steps). I have similarly run into issues when there are thousands of items. The main ...
- Tue May 28, 2024 8:33 am America/New_York
- Forum: Home
- Question: Unexpected behaviour with HLS in LPCLOUD
- Replies: 10
Re: Unexpected behaviour with HLS in LPCLOUD
I have not seen this issue before, but I access the HLS collections using this method: itemsS30 = catalog.search(bbox = bboxLL, datetime = f'{start}/{end}', collections = ['HLSS30.v2.0'], limit = 100).item_collection() Where bboxLL is a set of lat/lon coordinates, start and end are date strings (e.g...
- Wed May 22, 2024 4:43 pm America/New_York
- Forum: Home
- Question: LPCLOUD STAC Down
- Replies: 2
Re: LPCLOUD STAC Down
Correction to earlier posts, STAC link in question should be: https://cmr.earthdata.nasa.gov/stac/LPCLOUD
In any case, it is working again.
In any case, it is working again.
- Wed May 22, 2024 11:42 am America/New_York
- Forum: Home
- Question: LPCLOUD STAC Down
- Replies: 2
Re: LPCLOUD STAC Down
Dug a little deeper and I think it is related to maintenance. If you go to https://cmr.earthdata.nasa.gov/search you will see this alert: Outage: We have a scheduled deployment for CMR 1.248.0 to PROD Wednesday, May 22nd 2024. As part of this deployment, we will transition the load balancers in CMR ...