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I apologize for the weekend delay.

I will forward your question to our scientific staff. While waiting for their response, I recommend examining this How-To document to determine if will assist your efforts:

https://disc.gsfc.nasa.gov/

Yes, this can still be done. For area-averaged time-series data, the output is still available as CSV, consisting of time/date and the value of the area average for each time increment. If you are seeking the values from the grid of a time-averaged map, we have a How-To document describing how this ...

Hello and thanks for your question. We can consult our data specialists and reply shortly. Two questions to aid us in our response: 1. Are you seeking Level 2 swath data or Level 3 global gridded data? 2. If L3, do you want to subset for a region or acquire the full global file? Because you asked ab...

Hello, You can download data for a specified bounding box using Giovanni for the MODIS-Aqua mapped 4 km resolution data product. We are awaiting an update for the latter half of 2020, which is in progress. https://giovanni.gsfc.nasa.gov The OB.DAAC staff may also reply to your query here; I am just ...

The Earth-Moon distance varies slightly, so the exact signal timing will vary in length as well. You may find this of interest (it includes a statement of a particular Earth-Moon-Earth communications delay). https://aapt.scitation.org/doi/pdf/10.1119/1.2353576 Exact measurements of radar return time...

Hello, You can obtain terrestrial NPP from MODIS via the LP DAAC. https://earthdata.nasa.gov/search?q=npp+mod17a3 Ocean NPP based on SeaWiFS data is available here http://sites.science.oregonstate.edu/ocean.productivity/ This can probably be used for basic estimates even though the time period is 19...

Hello,

Are you trying to find terrestrial NPP, oceanic, or total?

Cloud cover is going to limit your options (as it does for many aspects of satellite remote sensing). There are satellites that acquire radar data (synthetic aperture radar, SAR) that can see through clouds, but I'm not sure they would show anything that you need to see, and you may have to pay for ...

Hello, What spatial resolution are you seeking? The highest resolution from NASA satellites is from Landsat, which is 15 meters, but Landsat does not provide full global coverage daily, it is commanded and scheduled for observations. You may be able to get a view with 250 meter resolution MODIS band...

Hello, We apologize for the slow response to your question. Our response was delayed because none of the NASA DAACs archives soil carbon data. However, the NASA Carbon Monitoring System (CMS) does have some soil carbon datasets. Go to the following page and search with the word "soil" in t...