Feb 12, 2018

Climate-change–driven accelerated sea-level rise detected in the altimeter era

R. S. Nerem, B. D. Beckley, J. T. Fasullo, B. D. Hamlington, D. Masters, G. T. Mitchum
Proceedings of the National Academy of Sciences
  • States that satellite altimetry has shown that global mean sea level has been rising at a rate of ∼3 ± 0.4 millimeters per year since 1993
  • Uses the altimeter record coupled with careful consideration of interannual and decadal variability as well as potential instrument errors
  • Shows that global mean sea level rise is accelerating at a rate of 0.084 ± 0.025 millimeters per year, which agrees well with climate model projections
  • Concludes that if sea level continues to change at this rate and acceleration, sea-level rise by 2100 (∼65 centimeters) will be more than double the amount if the rate was constant at 3 millimeters per year