Ocean pH and acidification March 14, 2014 Ocean pH of the 1990’s For the pelagic zone (upper 200 m of ocean levels), over the decade of the 1990′s, I have extracted ~129,000 pH records from the NOAA WOD database 3767total visits,1visits todayTweetShareSharePin copyrights 1966 to 2014 MW&A all rights reserved. You May Also Like Ocean pH and acidification, Uncategorized Global Ocean pH as Measured from 1910 through 1920 Ocean pH and acidification Ocean pH of the 70’s