Search found 166 matches

by LP DAAC - lien
Fri Mar 15, 2024 2:44 pm America/New_York
Forum: Questions/Comments
Question: HLS Granules Out of Date
Replies: 2

Re: HLS Granules Out of Date

Hello,
Sorry for the delay. We believe this is primarily due to the switch from MODIS Surface Reflectance to VIIRS. that is going on this week. We expect it to kick back up soon.
Thanks,
Brett
by LP DAAC - lien
Fri Mar 15, 2024 10:40 am America/New_York
Forum: Questions/Comments
Question: MCD19A3D has only 2 layers with NBAR when downloaded
Replies: 4

Re: MCD19A3D has only 2 layers with NBAR when downloaded

Hi CB, Yes, I am getting the same results you are. First I thought OK, the algorithm detected snow so the NDVI_Gap Filled was not produced. However 16/7 is along the coast and in the tropics so that would not be right. We'll investigate further and let you know as soon as we here anything from the d...
by LP DAAC - lien
Fri Mar 15, 2024 10:15 am America/New_York
Forum: Questions/Comments
Question: How should pixel values greater than 10,000 or less than 0 in MOD09GA data be handled?
Replies: 6

Re: How should pixel values greater than 10,000 or less than 0 in MOD09GA data be handled?

Hi Zhou,
It is always recommended to use the State Quality flags for clouds. The State Quality incorporaes the MOD35 cloud info and is more detailed.
Thanks,
Brett
by LP DAAC - lien
Fri Mar 15, 2024 10:13 am America/New_York
Forum: Questions/Comments
Question: How should pixel values greater than 10,000 or less than 0 in MOD09GA data be handled?
Replies: 6

Re: How should pixel values greater than 10,000 or less than 0 in MOD09GA data be handled?

Happy to help Zhou, please let me know if I can be of further assistance.
Brett
by LP DAAC - lien
Thu Mar 14, 2024 11:11 am America/New_York
Forum: Questions/Comments
Question: MCD15A3H
Replies: 6

Re: MCD15A3H

Hi Li Xiyu,
Can you tell me what Lai product you are comparing the MCD15s to?
Thanks,
Brett
by LP DAAC - lien
Thu Mar 14, 2024 11:07 am America/New_York
Forum: Questions/Comments
Question: MODIS MOD09A1 v6.1 invalid QC codes?
Replies: 5

Re: MODIS MOD09A1 v6.1 invalid QC codes?

Hello Hawthorne, Sorry for the delay, we contacted the PI/developer of this product for his take and he confirmed that we were reading the bits in reverse. OK, then the issue was why did the Mandatory Modland QA bits show "00" Good Data. He always thought the individual band quality QAs we...
by LP DAAC - lien
Thu Mar 14, 2024 9:16 am America/New_York
Forum: Questions/Comments
Question: HEG resample error in linux
Replies: 1

Re: HEG resample error in linux

Hi @jianjun5212
I think the HEG folks will be able to help you with this: heg-support@earthdata.nasa.gov.
Also, we have a tool that will do the same functions and it has many other capabilities also. It is the AppEEARS tool: https://appeears.earthdatacloud.nasa.gov
Thanks,
Brett
by LP DAAC - lien
Wed Mar 13, 2024 10:27 am America/New_York
Forum: Questions/Comments
Question: MCD19A3D has only 2 layers with NBAR when downloaded
Replies: 4

Re: MCD19A3D has only 2 layers with NBAR when downloaded

Hello,
All 11 SDS layers should be in each HDF file, can you tell me what method you used to download the data and what GIS software you are using? In the meantime I will download a couple of those tiles and take a look
Thanks,
Brett
by LP DAAC - lien
Wed Mar 13, 2024 10:20 am America/New_York
Forum: Questions/Comments
Question: MCD19A1
Replies: 3

Re: MCD19A1

Absolutely, please go to the MODIS Overview site as that has lots of great information including the complete list of the 36 MODIS spectral bands and there pertinent information: https://lpdaac.usgs.gov/data/get-started-data/collection-overview/missions/modis-overview/
Thanks,
Brett
by LP DAAC - lien
Wed Mar 13, 2024 7:17 am America/New_York
Forum: Questions/Comments
Question: Unable to download certain GEDI L1B granules
Replies: 4

Re: Unable to download certain GEDI L1B granules

Hi Q,
Sorry about that. I could put those orders in before, but later that technique was not working for me eihter.
Could you contact the folks at Eartrhdata support as they said they could give you various options on how to
access the data: cmr-support@earthdata.nasa.gov
Thanks,
Brett