Technical note: Interpreting pH changes
<p>The 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 becau...
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Copernicus Publications
2021-02-01
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| Series: | Biogeosciences |
| Online Access: | https://bg.copernicus.org/articles/18/1407/2021/bg-18-1407-2021.pdf |
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doaj-bbae80f5e0c741c8ac5e53b47e322bf02021-02-24T07:05:19ZengCopernicus PublicationsBiogeosciences1726-41701726-41892021-02-01181407141510.5194/bg-18-1407-2021Technical note: Interpreting pH changesA. J. Fassbender0J. C. Orr1A. G. Dickson2Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, CA 95039, USALSCE/IPSL, Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceScripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA<p>The 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<span class="inline-formula"><sup>+</sup></span>], expressed in mol kg<span class="inline-formula"><sup>−1</sup></span>) rather than an absolute change in [H<span class="inline-formula"><sup>+</sup></span>]. We recommend that [H<span class="inline-formula"><sup>+</sup></span>] be used in addition to pH when describing such changes and provide three examples illustrating why.</p>https://bg.copernicus.org/articles/18/1407/2021/bg-18-1407-2021.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
A. J. Fassbender J. C. Orr A. G. Dickson |
| spellingShingle |
A. J. Fassbender J. C. Orr A. G. Dickson Technical note: Interpreting pH changes Biogeosciences |
| author_facet |
A. J. Fassbender J. C. Orr A. G. Dickson |
| author_sort |
A. J. Fassbender |
| title |
Technical note: Interpreting pH changes |
| title_short |
Technical note: Interpreting pH changes |
| title_full |
Technical note: Interpreting pH changes |
| title_fullStr |
Technical note: Interpreting pH changes |
| title_full_unstemmed |
Technical note: Interpreting pH changes |
| title_sort |
technical note: interpreting ph changes |
| publisher |
Copernicus Publications |
| series |
Biogeosciences |
| issn |
1726-4170 1726-4189 |
| publishDate |
2021-02-01 |
| description |
<p>The 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<span class="inline-formula"><sup>+</sup></span>], expressed in mol kg<span class="inline-formula"><sup>−1</sup></span>) rather than an
absolute change in [H<span class="inline-formula"><sup>+</sup></span>]. We recommend that [H<span class="inline-formula"><sup>+</sup></span>] be used in
addition to pH when describing such changes and provide three examples
illustrating why.</p> |
| url |
https://bg.copernicus.org/articles/18/1407/2021/bg-18-1407-2021.pdf |
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AT ajfassbender technicalnoteinterpretingphchanges AT jcorr technicalnoteinterpretingphchanges AT agdickson technicalnoteinterpretingphchanges |
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