Proxy Error

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-surf609/resource/ad6a387f-3b1a-42ac-8adf-f4cbc08a4ca9.

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.