Search found 306 matches
- Mon Feb 22, 2021 12:43 pm America/New_York
- Forum: Questions/Comments
- 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 ...
- Fri Feb 19, 2021 12:48 pm America/New_York
- Forum: Questions/Comments
- 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...
- Fri Feb 19, 2021 12:35 pm America/New_York
- Forum: Questions/Comments
- 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...
- Tue Feb 16, 2021 1:45 pm America/New_York
- Forum: Questions/Comments
- 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?
Are you trying to find terrestrial NPP, oceanic, or total?
- Wed Jan 27, 2021 12:23 pm America/New_York
- Forum: Questions/Comments
- 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 ...
- Wed Jan 27, 2021 10:52 am America/New_York
- Forum: Questions/Comments
- 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...
- Tue Jan 26, 2021 1:23 pm America/New_York
- Forum: Questions/Comments
- 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...
- Tue Jan 26, 2021 12:45 pm America/New_York
- Forum: Questions/Comments
- 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...
- Mon Jan 25, 2021 10:47 pm America/New_York
- Forum: Questions/Comments
- 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...
- Wed Jan 20, 2021 3:06 pm America/New_York
- Forum: Questions/Comments
- Question: FOG STUDY IN THE NORTHERN PLAINS INDIA
- Replies: 1
Re: FOG STUDY IN THE NORTHERN PLAINS INDIA
Kancha, I would suggest starting with the MERRA-2 and AIRS data sets from the GES DISC. MERRA-2 has numerous meteorological variables, and the Atmospheric Infrared Sounder (AIRS) provides temperature and humidity data which can also be examined as vertical profiles. Below is a search URL for Dew Poi...