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Satellite-derived sea surface temperature data

Web search:

  @misc{https://doi.org/10.5067/ghgmr-4fj04,
  doi = {10.5067/GHGMR-4FJ04},
  url = {http://podaac.jpl.nasa.gov/dataset/MUR-JPL-L4-GLOB-v4.1},
  author = {{NASA/JPL}},
  title = {GHRSST Level 4 MUR Global Foundation Sea Surface Temperature Analysis (v4.1)},
  publisher = {NASA Physical Oceanography Distributed Active Archive Center},
  year = {2015}
}
  • Read the documentation
  • Data Access

Data Access

HTTPS endpoint

2020

  • Internal server error
{"message": "Internal server error"}

September

See hurricane tracker to find 'best' date, highest winds with lowest pressure: 9 16 09. Clicking on 16 shows the file is called 2020 09 17 at 9, so click on 15. 15 says 2020 09 16 09.

Clicking on that requires Earthdata login.

It will prompt you to download 20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc

Before looking at it, check the metadata.

The file is 728 MB

(base) lllowe@LisasMacStudio ~ % ls -lrth
-rw-r--r--@    1 lllowe  staff   728M Jul 21 14:44 20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc

(/Users/lllowe/TOPS/nam/env_nam) lllowe@LisasMacStudio ~ % ncdump -h 20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc
netcdf \20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1 {
dimensions:
	time = 1 ;
	lat = 17999 ;
	lon = 36000 ;

Panoply requires installation of Java. Opening the whole file chokes VisIt. And Paraview.

raw
https://opendap.earthdata.nasa.gov/providers/POCLOUD/collections/GHRSST%20Level%204%20MUR%20Global%20Foundation%20Sea%20Surface%20Temperature%20Analysis%20(v4.1)/granules/20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.dap.nc4?dap4.ce=/analysed_sst[0:1:0][0:1:17998][0:1:35999];/lat[0:1:17998];/lon[0:1:35999];/time[0:1:0]

encoded
https://opendap.earthdata.nasa.gov/providers/POCLOUD/collections/GHRSST%2520Level%25204%2520MUR%2520Global%2520Foundation%2520Sea%2520Surface%2520Temperature%2520Analysis%2520(v4.1)/granules/20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.dap.nc4?dap4.ce=/analysed_sst%5B0:1:0%5D%5B0:1:17998%5D%5B0:1:35999%5D;/lat%5B0:1:17998%5D;/lon%5B0:1:35999%5D;/time%5B0:1:0%5D

wget https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-protected/MUR-JPL-L4-GLOB-v4.1/20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc

NASA (.gov) https://podaac.jpl.nasa.gov › MEaSUREs-MURkk https://podaac.jpl.nasa.gov/dataset/MUR-JPL-L4-GLOB-v4.1

Accessing with curl and wget https://urs.earthdata.nasa.gov/documentation/for_users/data_access/curl_and_wget

> cd ~
  > touch .netrc
  > echo "machine urs.earthdata.nasa.gov login uid_goes_here password password_goes_here" > .netrc
  > chmod 0600 .netrc
> > cd ~
  > touch .urs_cookies

> wget --load-cookies ~/.urs_cookies --save-cookies ~/.urs_cookies --keep-session-cookies https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-protected/MUR-JPL-L4-GLOB-v4.1/20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc

https://podaac.jpl.nasa.gov/MEaSUREs-MUR

Sea surface temperature data were obtained from the Jet Propulsion Laboratory (JPL) Multiscale Ultrahigh Resolution (MUR) sea surface temperature product (https://podaac.jpl.nasa.gov/dataset/MUR-JPL-L4-GLOB-v4.1). This is a daily 1-km-resolution product that blends 1-km infrared sensor data and 25-km microwave sensor data.

Why not use v4.2?

https://opendap.earthdata.nasa.gov/

Open a small sample in VisIt

ncks -v analysed_sst -d lon,-93.,-78. -d lat,24.,34. 20200912090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc 20200912-SST.nc
ncks -v analysed_sst -d lon,-93.,-78. -d lat,24.,34. 20200913090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc 20200913-SST.nc
ncks -v analysed_sst -d lon,-93.,-78. -d lat,24.,34. 20200914090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc 20200914-SST.nc
ncks -v analysed_sst -d lon,-93.,-78. -d lat,24.,34. 20200915090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc 20200915-SST.nc
ncks -v analysed_sst -d lon,-93.,-78. -d lat,24.,34. 20200916090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc 20200916-SST.nc
ncks -v analysed_sst -d lon,-93.,-78. -d lat,24.,34. 20200917090000-JPL-L4_GHRSST-SSTfnd-MUR-GLOB-v02.0-fv04.1.nc 20200917-SST.nc

Search Granules https://search.earthdata.nasa.gov/search/granules?p=C1996881146-POCLOUD