The science
TODO: This entire page needs a lot of work
Exceedance is the average number of flood events that can be expected in a year.
- Exceedance depends on height above sea level and year
- Exceedance of 1 means one flood every year
- Exceedance of 0.1 means one flood every 10 years
- Exceedance of 0.01 means one flood every 100 years
- Exceedance of 0.002 means one flood every 500 years
Note: Intermediate and High Sea-Level Rise (SLR) scenarios are identical for 2025. Compare the plot above with the Portland subplot in Figure 2a from Baranes, et al 2020, https://doi.org/10.1029/2020JC016291, reproduced here...
