Search found 30 matches

by piyush
Thu Jun 25, 2026 9:39 am America/New_York
Forum: Home
Question: AVIRIS-5 Reflectance Raster Georeferencing
Replies: 4

Re: AVIRIS-5 Reflectance Raster Georeferencing

This appears to be a limitation of the tools you are using. As shown above, the geotransform is available in the data and easily accessible via most open source tooling. The data is on a regular UTM grid and maybe your specific toolset is too limited to be able to work with it or it is being used in...
by piyush
Wed Jun 24, 2026 2:36 pm America/New_York
Forum: Home
Question: AVIRIS-5 Reflectance Raster Georeferencing
Replies: 4

Re: AVIRIS-5 Reflectance Raster Georeferencing

This data is already orthorectified in netCDF files and uses CF conventions. So try using an appropriate netcdf reader ⇒ gdalinfo NETCDF:"AV520250627t181139_006_L2A_OE_25ef84e2_RFL_ORT.nc":/reflectance/reflectance | more Warning 1: dimension #0 (wavelength) is not a Time or Vertical dimens...
by piyush
Tue Apr 21, 2026 11:53 am America/New_York
Forum: Home
Question: Inconsistent variables in GLANCE30 product
Replies: 4

Re: Inconsistent variables in GLANCE30 product

Hello,

Thank you for the clarification. This is consistent with what we are seeing, that the change variables are missing for the first year - 2001. This would be good to have in the documentation upfront.

This can be closed as resolved.

Thanks
Piyush
by piyush
Mon Apr 13, 2026 1:43 pm America/New_York
Forum: Home
Question: Inconsistent variables in GLANCE30 product
Replies: 4

Inconsistent variables in GLANCE30 product

The documentation for the GLANCE30 product indicates that it containts seven variables. However, many of the earlier images in the collection only appear to have 4 variables. The variables associated with change are missing. Are there plans to make the images in the collection consistent? If so, is ...
by piyush
Wed Aug 28, 2024 4:48 pm America/New_York
Forum: Home
Question: 403: Forbidden errors when requesting temporary credentials
Replies: 7

Re: 403: Forbidden errors when requesting temporary credentials

Bumping this issue up as we are seeing this mode of failure with multiple products managed by LP DAAC on earthdata cloud.

Piyush
by piyush
Fri Jul 26, 2024 4:45 pm America/New_York
Forum: Home
Question: Mirroring artifacts in AVIRIS Classic L2 Reflectance
Replies: 5

Re: Mirroring artifacts in AVIRIS Classic L2 Reflectance

Hi John, The lines we would interested for now are: - f180529t01p00r06 - f180608t01p00r10 - f180608t01p00r11 - f180604t01p00r09 We would definitely ingest more lines directly from earthdata cloud if we were confident that the imagery would not have artifacts. We also noticed that there is no reflect...
by piyush
Wed Jul 17, 2024 9:28 am America/New_York
Forum: Home
Question: Mirroring artifacts in AVIRIS Classic L2 Reflectance
Replies: 5

Re: Mirroring artifacts in AVIRIS Classic L2 Reflectance

Hi Michele,

Correct. That is the product we are looking at.

Thanks
Piyush
by piyush
Tue Jul 16, 2024 4:10 pm America/New_York
Forum: Home
Question: Mirroring artifacts in AVIRIS Classic L2 Reflectance
Replies: 5

Mirroring artifacts in AVIRIS Classic L2 Reflectance

We are noticing significant image artifacts at the start / end of the various flight lines for the AVIRIS Classic L2 Reflectance products. We have downloaded the imagery and confirmed the issue using different independent software / analysis approaches. We observe these in all of the following fligh...
by piyush
Fri Jul 05, 2024 7:50 pm America/New_York
Forum: Home
Question: Delay/ lag in Sentinel-1 SLC
Replies: 5

Re: Delay/ lag in Sentinel-1 SLC

Hi Bill,

Thanks for looking into this during the break. Yeah, we are noticing that ASF latency has gone up from 6 -12 hours to almost 2 days now. The latest images are now about a day behind but since the 3rd week of June - the latency has been approaching 2 days.

Thanks
Piyush
by piyush
Fri Jul 05, 2024 4:42 pm America/New_York
Forum: Home
Question: Delay/ lag in Sentinel-1 SLC
Replies: 5

Re: Delay/ lag in Sentinel-1 SLC

Hi Bill, We have been seeing low counts and increased latency again over last couple of days again. Is there a resource on ESA side that you could point us to that might indicate issues at source? We have been following https://dataspace.copernicus.eu/news closely but that does not appear to explain...