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We are looking into it and will get to you soon.

Yes, you need to convert the UTC time to the local time.

Yes, for most part it is fixed.

Yes. The CO2 amounts in the atmosphere have been adjusted on a monthly basis in the MOD06 algorithm. A sinusoidal CO2 increase has been incorporated since collect 6. Hope this answers your question.

Sorry, we don't have example query yet but you might find online help at the following location useful:
https://www.opendap.org/support/online-help-files

Dear Grace:
The data acquisition time is stored in VNP46A1 layer UTC_Time. More info can be found from Black Marble users guide
https://viirsland.gsfc.nasa.gov/PDF/BlackMarbleUserGuide_v1.2_20220916.pdf

Section 3.2 for filenames.
Table 3 for layers

Yes, that's what we are working for. Hopefully, after these updates are installed ladsweb should be stable.

We are aware of and understand the problem (504 Gateway Time-out error) users are facing these days in downloading data. Our team is working on a solution, and hope to have a release out in the next week or so. In the meantime, if you get 504 error try again after a short pause or at a different time.

Yes, our team is actively working on resolving the issue but may take a week or more to deploy the solution.

We are aware of and understand the problem (504 Gateway Time-out error) users are facing these days in downloading data. Our team is working on a solution, and hope to have a release out in the next week or so. In the meantime, if you get 504 error try again after a short pause or at a different time.