Search found 196 matches

by LP DAAC - lien
Thu Jul 25, 2024 9:02 am America/New_York
Forum: Home
Question: Using the Data
Replies: 1

Re: Using the Data

Hello,
There is no need for further manipulation, I am assuming you are referring to the MCD43A3 Albedo product: https://lpdaac.usgs.gov/products/mcd43a3v061/
They are good to just as they are. If you notice any value anomalies, you can always check the QA bits for the data.
Thanks,
LPDAAC
by LP DAAC - lien
Wed Jul 24, 2024 9:11 am America/New_York
Forum: Home
Question: GPP MYD17A2HGF units 8day
Replies: 3

Re: GPP MYD17A2HGF units 8day

Hello,
I don't believe it would be advisable or accurate to divide by 8. It is probably unlikely that each day of the 8-day period had the same GPP value. So, it would be best to leave it as 8-day cumulative.
Thanks,
LPDAAC
by LP DAAC - lien
Wed Jul 24, 2024 8:58 am America/New_York
Forum: Home
Question: FPAR product MCD15A2H stopped on 1st June?
Replies: 5

Re: FPAR product MCD15A2H stopped on 1st June?

Hi, Yes, could you email us through our LPDAAC email: lpdaac@usgs.gov It is a better way to set this up, we can then email a form for you to fill out. Basically, all we need is the product, your area of interest (preferably tile range), and the temporal period, which we can just leave open ended. Th...
by LP DAAC - lien
Tue Jul 23, 2024 10:33 am America/New_York
Forum: Home
Question: FPAR product MCD15A2H stopped on 1st June?
Replies: 5

Re: FPAR product MCD15A2H stopped on 1st June?

Hi Mattia, Would like to be set up on a subscription so that when data is ingested into the archive it can automatically stage an order and send you a notification? Or it can also be set up to ftp push data directly to a server on your end. This will be available for the next 1-2 years as after that...
by LP DAAC - lien
Tue Jul 23, 2024 9:20 am America/New_York
Forum: Home
Question: Negative values from HLS products
Replies: 1

Re: Negative values from HLS products

Hello, Negative values are common anomalies in Surface Reflectance data. These are generally caused by water. The atmospheric correction and surface reflectance retrieval algorithms are not ideal for water bodies due to the inherently low level of water leaving radiances and consequently very low SN...
by LP DAAC - lien
Mon Jul 22, 2024 2:25 pm America/New_York
Forum: Home
Question: MCD43 16 day data looks like 1 day?
Replies: 3

Re: MCD43 16 day data looks like 1 day?

Hello Joe
I will check into this particular granule. They are still considered 16 days, but it does not necessarily mean all 16 days of collections were able to be considered in each granule.
Thanks,
Brett
by LP DAAC - lien
Fri Jul 19, 2024 8:54 am America/New_York
Forum: Home
Question: GPP MYD17A2HGF units 8day
Replies: 3

Re: GPP MYD17A2HGF units 8day

Hello,
The mean would be for the 8-day data sets, not the individual days within the 8-day products. Please let us know if you have any questions.
Thanks,
Brett
by LP DAAC - lien
Tue Jul 16, 2024 10:05 am America/New_York
Forum: Home
Question: Emit Aggregated Spectral Abundance
Replies: 1

Re: Emit Aggregated Spectral Abundance

Hello, These do not need to be scaled, those are the actual percentages. Please note that those 10 minerals make up just a fraction of what the dust is composed of. This will be the case all the time. So those 10 minerals will probably never make up 100%, or even come close. Also, Version 2 of this ...
by LP DAAC - lien
Fri Jul 12, 2024 9:30 am America/New_York
Forum: Home
Question: FPAR product MCD15A2H stopped on 1st June?
Replies: 5

Re: FPAR product MCD15A2H stopped on 1st June?

Hi, I am not familiar with "rest API". However the data is current. You may want to access it it a different way if that is not working. I just ran an Earthdata Search you can use this link to get the data: https://search.earthdata.nasa.gov/search/granules?p=C2222147000-LPCLOUD&pg[0][v...
by LP DAAC - lien
Mon Jul 08, 2024 11:39 am America/New_York
Forum: Home
Question: MOD13Q1 NDVI data preprocessing
Replies: 1

Re: MOD13Q1 NDVI data preprocessing

Hello @q1w2e3r4
Please take a look at the AppEEARS tool: https://lpdaac.usgs.gov/tools/appeears/
I am not sure which interface you had initially tried, but I believe AppEEARS will perform the processing that you desire. Please let me know if you have any questions.
Thanks,
Brett