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Table 1 Metrics to characterize marine heatwaves (MHWs) for each year at three sites. Number of MHWs, total duration of all MHWs in a year, maximum observed anomaly above the threshold during a MHW, and the sum of daily intensity anomalies (°C days) follow Hobday et al. (2016). Also provided are the number of anomalous days exceeding the 90th percentile threshold value but not meeting the criteria for inclusion as part of a MHW (i.e. non-MHW days) and the range of MHW duration

From: Shifts in the distribution and abundance of coastal marine species along the eastern Pacific Ocean during marine heatwaves from 2013 to 2018

Site   No. of Total duration Non-MHW MHW Max. deviation  
Year MHWs MHWs (d) anomalies (d) range (d) MHW (°C) °C days
ESNERR 2013 2 11 17 5–6 1.1 5.4
2014 6 121 37 10–41 3.0 122.1
2015 10 206 26 8–55 3.1 219.8
2016 9 105 15 5–21 1.5 60.7
2017 3 45 17 9–25 1.7 25.8
2018 6 113 26 6–39 2.9 107.5
HMS 2013 0 0 1 0 0.2 0.0
2014 5 114 32 16–30 2.4 121.7
2015 6 151 22 5–58 2.5 143.2
2016 3 18 70 5–8 0.9 7.4
2017 2 30 18 8–22 2.8 33.4
2018 5 61 25 6–19 2.2 42.7
TRNERR 2013 3 25 32 5–14 1.6 17.9
2014 11 233 26 5–78 4.1 280.9
2015 8 259 11 5–109 5.2 463.8
2016 9 145 30 5–37 5.1 209.1
2017 6 54 48 5–16 5.2 58.3
2018 12 177 20 5–32 3.8 250.0