FN Archimer Export Format PT J TI Technical note: Interpreting pH changes BT AF Fassbender, Andrea J. Orr, James C. Dickson, Andrew G. AS 1:1;2:2;3:3; FF 1:;2:;3:; C1 Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, CA 95039, USA LSCE/IPSL, Laboratoire des Sciences du Climat et de l’Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, France Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA C2 MONTEREY BAY AQUARIUM RES INST, USA LSCE, FRANCE UNIV CALIF SAN DIEGO, USA IN DOAJ IF 5.092 TC 30 UR https://archimer.ifremer.fr/doc/00683/79539/82217.pdf https://archimer.ifremer.fr/doc/00683/79539/82219.pdf https://archimer.ifremer.fr/doc/00683/79539/82220.pdf https://archimer.ifremer.fr/doc/00683/79539/82221.pdf LA English DT Article CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION AB he number and quality of ocean pH measurements have increased substantially over the past few decades such that trends, variability, and spatial patterns of change are now being evaluated. However, comparing pH changes across domains with different initial pH values can be misleading because a pH change reflects a relative change in the hydrogen ion concentration ([H+], expressed in mol kg−1) rather than an absolute change in [H+]. We recommend that [H+] be used in addition to pH when describing such changes and provide three examples illustrating why. PY 2021 PD FEB SO Biogeosciences SN 1726-4170 PU Copernicus GmbH VL 18 IS 4 UT 000624347100001 BP 1407 EP 1415 DI 10.5194/bg-18-1407-2021 ID 79539 ER EF