Forum

The negative SO2 values are artifacts of the retrieval process. They are usually associated with retrievals over highly reflective surfaces. The OMSO2.003 ReadMe has more detail than is contained in the OMSO2e ReadMe. https://aura.gesdisc.eosdis.nasa.gov/data/Aura_OMI_Level2/OMSO2.003/doc/README.OMS...

The variables 'PixelCornerLatitudes' and 'PixelCornerLongitudes' contain the coordinates of the corners of each pixel. The corner locations fall on either side of the pixel centers which are defined in the geolocation variables 'Longitude' and 'Latitude' which have dimensions nTimes and nXtrack . Ex...

The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), provides MERRA-2 data. You may download time series at your specific point locations through the GDS ( GrADS Data Server) service. Here is the How-to document that provides an example: https://disc.gsfc.nasa.gov/informa...

The NASA Applied Remote Sensing Training Program is providing an introductory webinar on how NASA measures air pollution from space, on May 26 and 28, 2020. This webinar will include the use of data and tools from Earthdata Forum participating DAACs. There will be sessions conducted in English and S...

From our GES DISC staff member lead on GLDAS/NLDAS data: "Regarding to your question on the coordinate conventions, could you please take a look on the NLDAS FAQ https://ldas.gsfc.nasa.gov/faq/nldas (search for Q. What geographic coordinate system was used to generate the NLDAS grid?). As descr...

From the GES DISC / GSFC Subject Matter Expert on MERRA-2 data: "The Variable called SPEED (and its companion SPEEDMAX) are computed from the lowest model level data in the 3D data, and saved as a 2D variable. This is the windspeed needed to compute surface fluxes in the surface layer parameter...

mhylind wrote: ↑Wed May 20, 2020 6:10 pm America/New_York
I am using GLDAS L4 data from Noah and the netCDF .nc4 files.

Hello. My fellow staff members would like to know what you meant by "connecting datasets" in your original question; what is your goal? They may be able to offer more specific advice.

We would be glad to see your method here on the Forum. Regarding general advice, we saw that you can use Cygwin. Cdo has a lot of functionality: https://code.mpimet.mpg.de/projects/cdo/ . Some of our staff members find it is more useful than nco. Gdal has some good tools as well. https://gdal.org/pr...

Dear TRMM user, The units for precipitation in both 3B42 and 3B43 are, mm/hr. For the 3B42 daily, mm. I would suggest reading their documents in their dataset landing pages (listed below) to become more familiar with the datasets, https://disc.gsfc.nasa.gov/datasets/TRMM_3B42_7/summary https://disc....

The GES DISC has published the Data-in-Action article entitled "Comparison of IMERG Early and Late Run Precipitation Data Products for Derecho Event of May 3, 2020". In this article, rainfall data products from the Integrated Multi-satellitE Retrievals for Global Precipitation Measurement ...