Status of Mean Sea Level Rise around the USA (2020)

The potential threats to the USA from current and projected sea level rise are significant, with profound environmental, social economic consequences. This study continues refinement improvement in analysis techniques for research beyond Fourth US National Climate Assessment (NCA4) report by incorporating further advancements time series of long tide gauge records integrated an improved vertical land motion (VLM) assessment. has also been synthesised updated regional assessment satellite altimetry trends margins fringing USA. Coastal more vulnerable posed rising levels those which subsidence is prevalent, higher evident ‘geocentric’ velocities mean being observed. evidence this highlights key spatial features emerging 2020, highlight northern foreshore Gulf Coast along east coast south Chesapeake Bay region exposed range factors exacerbating than other coastlines at present. findings complement extend NCA4 2020.