The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/partial-pressure-or-fugacity-of-carbon-dioxide-salinity-and-other-variables-collected-from-surf611/resource/490761ed-5deb-42b5-8682-eea1ddf8ebc3.
Reason: DNS lookup failure for: os-data-catalog.ngdc.noaa.gov
Additionally, a 502 Bad Gateway error was encountered while trying to use an ErrorDocument to handle the request.