Table 1 Historical 95% exceedance level changes of MSL vs. TSL at Hong Kong, Honolulu, and San Francisco. For all determinations, the 95% level is reported for the first part of the historical tide gauge record (1965–1985 for Hong Kong; 1905–1925 for Honolulu and 1897–1917 for San Francisco), the last part of the record (1995–2015 for all three stations), and the difference between the two times to show the change in each exceedance level. All values are in units of millimeters.

From: Coupling of sea level and tidal range changes, with implications for future water levels

 

First 20-year exceedance levels (mm)

Recent 20-year exceedance level (mm)

Change in exceedance (mm)

Hong Kong (1965–2015)

MSL 95% exceedance

1584

1662

+78

TSL 95% exceedance

3330

3480

+150

Honolulu (1905–2015)

MSL 95% exceedance

1408

1520

+112

TSL 95% exceedance

1988

2098

+124

San Francisco (1897–2015)

MSL 95% exceedance level

2708

2894

+188

TSL 95% exceedance level

4396

4590

+194