julia> set!(ocean.model, T=Metadatum(:temperature, dataset=ECCO4Monthly()),
                         S=Metadatum(:salinity, dataset=ECCO4Monthly()))
[ Info: Downloading ECCO data: temperature in /cluster/home/aklocker/.julia/scratchspaces/0376089a-ecfe-4b0e-a64f-9c555d74d754/ECCO/v4...

[ Info:  ... downloaded 381.0 B (100% complete, 2.195 hours)
[ Info:  ... downloaded 381.0 B (100% complete, 2.195 hours)
[ Info:  ... downloaded 381.0 B (100% complete, 2.195 hours)
[ Info:  ... downloaded 381.0 B (100% complete, 2.195 hours)
ERROR: RequestError: HTTP/1.1 401 Unauthorized while requesting https://ecco.jpl.nasa.gov/drive/files/Version4/Release4/interp_monthly/THETA/1992/THETA_1992_01.nc

The login credentials are definitely correct:

julia> # Function to verify credentials manually
       function verify_ecco_url_access(url::String)
           try
               response = HTTP.get(url; username=ENV["ECCO_USERNAME"], password=ENV["ECCO_PASSWORD"])
               return response.status == 200
           catch e
               println("Error: ", e)
               return false
           end
       end

       # Test URL
verify_ecco_url_access (generic function with 1 method)

julia> test_url = "https://ecco.jpl.nasa.gov/drive/files/Version4/Release4/interp_monthly/THETA/1992/THETA_1992_01.nc"
"https://ecco.jpl.nasa.gov/drive/files/Version4/Release4/interp_monthly/THETA/1992/THETA_1992_01.nc"

julia> if verify_ecco_url_access(test_url)
           println("ECCO credentials verified successfully!")
       else
           error("Failed to verify ECCO credentials. Check the username and password.")
       end
ECCO credentials verified successfully!