Search found 172 matches

by LP DAAC - lien
Tue Feb 27, 2024 12:25 pm America/New_York
Forum: Questions/Comments
Question: MCD19A2 incorrect tile size
Replies: 2

Re: MCD19A2 incorrect tile size

Hi, Sorry for the misinformation with this. The more precise size of the what is referred to as 500 meter MODIS pixel is actually 463.3127 meters. Each MODIS 500 meter product will have 2400 x 2400 pixels. The native format for the gridded MODIS products are Sinusoidal and this makes the MODIS image...
by LP DAAC - lien
Tue Feb 27, 2024 11:57 am America/New_York
Forum: Questions/Comments
Question: MCD19A2 AOD data preprocessing
Replies: 4

Re: MCD19A2 AOD data preprocessing

Hello, I am really not sure on how you get get a csv file for AOD. Because of the multiple dimensions of the file, this product is not available in our AppEEARS tool. I am not sure if ArcMap can do that or not. You may have to check with the software documentation for many of these questions: https:...
by LP DAAC - lien
Tue Feb 27, 2024 9:10 am America/New_York
Forum: Questions/Comments
Question: Slow Download of HDF files using urllib
Replies: 1

Re: Slow Download of HDF files using urllib

Good Morning,
Could you send us you script and we can take a look to see what may be going on. I can't think of any changes on e4ftl01.cr.usgs.gov that may have caused this.
Thanks,
Brett
by LP DAAC - lien
Wed Feb 21, 2024 9:27 am America/New_York
Forum: Questions/Comments
Question: MODIS 8 Day or 16 Day Composite
Replies: 2

Re: MODIS 8 Day or 16 Day Composite

Hello, Yes, the day mentioned is the first day of the composite period, so in your example the period would be from January 1 through the 8th of January. This is true with all MODIS/VIIRS products, with one exception. That exception is the MCD43 BRDF/Albedo products. Those are 16 day products, but t...
by LP DAAC - lien
Tue Feb 20, 2024 9:29 am America/New_York
Forum: Questions/Comments
Question: Downloading MOD13A1 and MYD13A1 files - methods?
Replies: 4

Re: Downloading MOD13A1 and MYD13A1 files - methods?

Hello,
Could you attach your python code and we can take a look, Also, could you attach the text file then we can see where you compile it from. If you would like you could send it to the LPDAAC email: lpdaac@usgs.gov
Thanks,
Brett
by LP DAAC - lien
Fri Feb 16, 2024 10:37 am America/New_York
Forum: Questions/Comments
Question: MODIS MOD09A1 Product negative reflectances
Replies: 1

Re: MODIS MOD09A1 Product negative reflectances

Hi Niklas, Sorry, but I don't think there is much that can be done about that, the MOD09 products are not recommended for water pixels. The "anomalies" that you've identified, e.g. negative reflectance values, are known issues in MODIS along with many other Surface Reflectance products suc...
by LP DAAC - lien
Wed Feb 14, 2024 11:15 am America/New_York
Forum: Questions/Comments
Question: Albedo data by city
Replies: 4

Re: Albedo data by city

Hi Hina, The MCD43A3 is available through AppEEARS: https://lpdaac.usgs.gov/products/mcd43a3v061/ The MCD43A3 contains the 7 MODIS Land Bands and 3 broadbands in both Black-Sky and White_Sky Albedo. AppEEARS will allow you to perform a lat long Point search or an area. The point search would bring b...
by LP DAAC - lien
Mon Jan 22, 2024 11:54 am America/New_York
Forum: Questions/Comments
Question: Missing MOD11A2.061 tiles from 2001
Replies: 15

Re: Missing MOD11A2.061 tiles from 2001

Hi Mauricio,
Thanks for your patience. The CMR cloud library has been updated so it should be reconciled with our on-prem Data Pool.
Thanks again for your patience and informing us about this.
Brett
by LP DAAC - lien
Mon Jan 22, 2024 10:22 am America/New_York
Forum: Questions/Comments
Question: Error loading into memory HLS data
Replies: 5

Re: Error loading into memory HLS data

Hi Charlie, We've updated the HLS_Tutorial.ipynb to include a try loop around reading of the HLS files via https. There seems to be some sort of network issue that can cause that error, and it appears to be independent of the code being executed in the notebook. We would recommend adding a retry loo...
by LP DAAC - lien
Mon Jan 22, 2024 9:37 am America/New_York
Forum: Questions/Comments
Question: Trouble accessing files via S3
Replies: 2

Re: Trouble accessing files via S3

Hello, We are sending this to our developers to get there take, as soon as I hear anything I will let you know. This product is also in our on-premises Data Pool: https://e4ftl01.cr.usgs.gov/MOLT/MOD14.061/ Also we do have a python script that access the data that way: https://git.earthdata.nasa.gov...