Mean and standard error of intensity (I), duration (D), and severity (S) of pH, temperature and combined events.

The pH threshold used was 8.1 based on the 2010 mean global open ocean pH, while the Mean Monthly Maxima (MMM) temperature thresholds used for June, July, August, September, October, and December were 23.81°C, 23.12°C, 23.93°C, 25.32°C, 25.98°C, and 29.0°C, respectively. I, D, and S metrics are presented for temperature and pH individually, as well as in a composite metric that incorporates both stressors. pH and temperature metrics for intensity, duration, and severity are shown as raw, unscaled averages for each month, based on the IpH; however, the combined metrics are shown as scaled averages (refer to Methods section for more details).
Mean and standard error of intensity (I), duration (D), and severity (S) of pH, temperature and combined events.