Search found 317 matches

by GES DISC - jimacker
Fri Feb 26, 2021 1:48 pm America/New_York
Forum: Home
Question: Regridding and plotting OMI_MINDS_NO2_1 data
Replies: 4

Re: Regridding and plotting OMI_MINDS_NO2_1 data

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...
by GES DISC - jimacker
Mon Feb 22, 2021 12:43 pm America/New_York
Forum: Home
Question: Downloading MODIS-Aqua Mapped product programmatically
Replies: 3

Re: Downloading MODIS-Aqua Mapped product programmatically

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 ...
by GES DISC - jimacker
Fri Feb 19, 2021 12:48 pm America/New_York
Forum: Home
Question: How long does it take NASA to ping a satellite or spacecraft that's orbiting the earth’s moon?
Replies: 1

Re: How long does it take NASA to ping a satellite or spacecraft that orbiting the earth’s moon?

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...
by GES DISC - jimacker
Fri Feb 19, 2021 12:35 pm America/New_York
Forum: Home
Question: Help on accessing numerical data sheets on Net Primary Production
Replies: 4

Re: Help on accessing numerical data sheets on Net Primary Production

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...
by GES DISC - jimacker
Tue Feb 16, 2021 1:45 pm America/New_York
Forum: Home
Question: Help on accessing numerical data sheets on Net Primary Production
Replies: 4

Re: Help on accessing numerical data sheets on Net Primary Production

Hello,

Are you trying to find terrestrial NPP, oceanic, or total?
by GES DISC - jimacker
Wed Jan 27, 2021 12:23 pm America/New_York
Forum: Home
Question: Satellite Image Neede
Replies: 4

Re: Satellite Image Neede

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 ...
by GES DISC - jimacker
Wed Jan 27, 2021 10:52 am America/New_York
Forum: Home
Question: Satellite Image Neede
Replies: 4

Re: Satellite Image Neede

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...
by GES DISC - jimacker
Tue Jan 26, 2021 1:23 pm America/New_York
Forum: Home
Question: Soil Carbon Measurement
Replies: 1

Re: Soil Carbon Measurement

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...
by GES DISC - jimacker
Tue Jan 26, 2021 12:45 pm America/New_York
Forum: Home
Question: Wildfires, Climate Change, Green house emissions
Replies: 3

Re: Wildfires, Climate Change, Green house emissions

Hello, Here are a couple of articles that may help your data search and analysis. https://climate.nasa.gov/news/2891/a-drier-future-sets-the-stage-for-more-wildfires/ https://www.nationalgeographic.com/science/2020/09/climate-change-increases-risk-fires-western-us/ https://www.carbonbrief.org/explai...
by GES DISC - jimacker
Mon Jan 25, 2021 10:47 pm America/New_York
Forum: Home
Question: Land Surface Temperature
Replies: 5

Re: Land Surface Temperature

I suggest using the Giovanni system, https://giovanni.gsfc.nasa.gov/ . Search for "surface temperature". There are several data products available, both from satellite instrument observations and reanalysis models. Then you can create an area-averaged time series for your time period of in...