Figure : hot-data-20160721

Ocean Carbonate Chemistry

Figure 13.4

National Oceanic and Atmospheric Administration, Goddard Institute for Space Studies
Elizabeth B. Jewett, Anastasia Romanou

This figure appears in chapter 13 of the Climate Science Special Report: The Fourth National Climate Assessment: Volume I report.

Trends in surface (< 50 m) ocean carbonate chemistry calculated from observations obtained at the Hawai‘i Ocean Time-series (HOT) Program in the North Pacific over 1988–2015. The upper panel shows the linked increase in atmospheric (red points) and seawater (blue points) CO2 concentrations. The bottom panel shows a decline in seawater pH (black points, primary y-axis) and carbonate ion concentration (green points, secondary y-axis). Ocean chemistry data were obtained from the Hawai‘i Ocean Time-series Data Organization & Graphical System (HOT-DOGS, (Figure source: NOAA).

Free to use with credit to the original figure source.

This figure was created on September 02, 2016.

This figure was submitted on October 31, 2017.

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