The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/surface-underway-measurements-of-partial-pressure-of-carbon-dioxide-pco2-in-water-and-atmospher/resource/9b87a163-2d20-4e7a-82af-2320665e5296.
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.