Forum

Dear Brett, Through reading the source code, I learned that the eight-day synthesis is performed on a per-pixel basis. The observation coverage corresponds to the values in the "obscov_500m" layer in MOD09GA. Initially, the observation data within the eight days are grouped by orbit number...

Dear Brett, Thank you very much for your response.Through your response and reading the source code, I learned that the eight-day synthesis is performed on a per-pixel basis. The observation coverage corresponds to the values in the "obscov_500m" layer in MOD09GA. Initially, the observatio...

In the user guide for MOD09A1, I learned that the products of the MOD_PR09A.exe program are used to generate eight-day composite reflectance data from daily reflectance data. I would like to ask what "Observations with the highest coverage" in the text corresponds to in terms of observatio...

ok,thanks

OK, thank you. I have one more question. If I want to perform vegetation physical and chemical parameter inversion, is it necessary to remove pixels with high aerosol levels?

Apologies for the previous oversight. The product being used is MOD09GA.Thanks for your helping
Zhou

While I was referencing the state layer for removing clouds and their shadows from MODIS images, I noticed there are two indicators related to cloud layers: "cloud state" and "Internal Cloud Algorithm Flag." I am not sure which indicator I should follow for cloud removal and woul...

Hi Brett,
That's great, thank you very much.
Zhou

LP DAAC - lien wrote: > Hi, > Yes, this is somewhat common especially in daily data, practically every > tile has some of these outliers. They should not be used, they are > erroneous data. > Please see the statement below which gives more specifics on why this is > the case: > > The "anomalies...

LP DAAC - dgolon wrote:
> Hello @zhooukee I apologize, we missed your question. I
> believe that might be an older copy of the script based on the readme.
> Please try using the script found here:
> https://github.com/nasa/HLS-Data-Resources

OK，thanks！