Search found 247 matches

by LP DAAC-EDL - lien
Thu Oct 24, 2024 9:58 am America/New_York
Forum: Home
Question: Missing data in MODIS/Terra+Aqua AOD and Water Vapor from MAIAC, Daily L3 Global 0.05Deg CMG V061
Replies: 2

Re: Missing data in MODIS/Terra+Aqua AOD and Water Vapor from MAIAC, Daily L3 Global 0.05Deg CMG V061

Hello, Could you give us more specifics on the area that is missing data. If it is over deep ocean, that is expected. Please see page 6 of the User Guide for more information on this: https://lpdaac.usgs.gov/documents/1500/MCD19_User_Guide_V61.pdf If it is over land can you give us a coordinate rang...
by LP DAAC-EDL - lien
Tue Oct 22, 2024 12:11 pm America/New_York
Forum: Home
Question: Help Looking for and Downloading Climate Change Variables for Research on Agricultural Productivity in Peru
Replies: 7

Re: Help Looking for and Downloading Climate Change Variables for Research on Agricultural Productivity in Peru

Hi Brayan, I see there are about 8,712 files to download, I wonder if the browser is limiting the download size? Can you try a different option, wget seems to work well: https://github.com/nasa/LPDAAC-Data-Resources/blob/main/guides/bulk_download_using_wget.md Possibly a different browser might work...
by LP DAAC-EDL - lien
Fri Oct 18, 2024 4:48 pm America/New_York
Forum: Home
Question: Help Looking for and Downloading Climate Change Variables for Research on Agricultural Productivity in Peru
Replies: 7

Re: Help Looking for and Downloading Climate Change Variables for Research on Agricultural Productivity in Peru

Hi Brayan, Another option that may help is the LPDAAC AppEEARS tool: https://appeears.earthdatacloud.nasa.gov/ It has many of our products available through it including the MOD/MYD21 products: https://lpdaac.usgs.gov/product_search/?query=mod21&status=Operational&view=cards&sort=title A...
by LP DAAC-EDL - lien
Tue Oct 08, 2024 12:33 pm America/New_York
Forum: Home
Question: APPEEARS API - Available images endpoint?
Replies: 1

Re: APPEEARS API - Available images endpoint?

Hi Juliano,
AppEEARS is probably not the best option for this. It is designed to process the data so it will not have a very quick turnaround time. We do suggest NASA Earth Access however: https://earthaccess.readthedocs.io/en/latest/
Please let us know if you have any questions.
Thanks,
Brett
by LP DAAC-EDL - lien
Mon Oct 07, 2024 10:25 am America/New_York
Forum: Home
Question: MOD13Q1 NDVI data preprocessing
Replies: 6

Re: MOD13Q1 NDVI data preprocessing

Please note the .csv file AppEEARS outputs does incorporate the scaling factor. However, the pixel values in the output raster images are not scaled. So yes, the csv values are scaled.
Thanks,
LPDAAC
by LP DAAC-EDL - lien
Thu Oct 03, 2024 10:39 am America/New_York
Forum: Home
Question: VIIRS Version 2 (VNP13A1 v002) data
Replies: 3

Re: VIIRS Version 2 (VNP13A1 v002) data

Hi Duanyang,
Sorry for the delay in getting back to you. The data is all now in. Thanks for your patience.
Brett
by LP DAAC-EDL - lien
Fri Sep 27, 2024 9:45 am America/New_York
Forum: Home
Question: MOD11A2 Terra vs Aqua shift
Replies: 5

Re: MOD11A2 Terra vs Aqua shift

Hello,
Can you give me more specifics about the offset. How many meters do you figure it is, I am not seeing it in the archived tiles, but I may not be looking in the right place.
Thanks,
Brett
by LP DAAC-EDL - lien
Tue Sep 24, 2024 3:49 pm America/New_York
Forum: Home
Question: MCD19A2 V61 Daily Data: Clarifying the Presence of Two Files per Day
Replies: 1

Re: MCD19A2 V61 Daily Data: Clarifying the Presence of Two Files per Day

Hello, Sorry for issues with this. There were some production problems with the MCD19A2 products for the first few months of 2022. The Science team decided to reprocess the data from January 1 through May of 2022. The duplicate removal script was having some issues also. So, there are some duplicate...
by LP DAAC-EDL - lien
Thu Sep 19, 2024 10:18 am America/New_York
Forum: Home
Question: Inquiry about overlapping same area processing when merging images
Replies: 1

Re: Inquiry about overlapping same area processing when merging images

Hi Seong-jun Lee, It may work, but I can't give you a definitive answer on that. I would like to suggest to you our AppEEARS tool: https://appeears.earthdatacloud.nasa.gov HLS is available in AppEEARS and it does all this automatically. You can make an area sample request and it mosaics and does all...
by LP DAAC-EDL - lien
Thu Sep 19, 2024 10:09 am America/New_York
Forum: Home
Question: MCDLCHKM.
Replies: 2

Re: MCDLCHKM.

Hi Jonas, I don't believe that this product has ever been archived and distributed, it is used only as an upstream product used to produce other MODIS products. You may want to check with MODAPS to confirm this as they are the data providers: https://modaps.modaps.eosdis.nasa.gov/services/user/ Than...