Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-021-22079-2
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Funding
- David and Arleen McGlade Foundation
- Cushman Foundation
- U.S. National Science Foundation (NSF) [OCE-1804999]
- NSF [OCE-1702587, OCE-2002437]
- Singapore Ministry of Education Academic Research Fund [MOE2019-T3-1-004]
- National Research Foundation Singapore
- Singapore Ministry of Education, under the Research Centers of Excellence initiative
- Marine Institute under the Marine Research Programme - Irish Government
- H.F. Alderfer Fund for Environmental Studies at Bryn Mawr College
- Swiss Academy of Sciences
- Chinese Academy of Sciences
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The study estimated sea-level budgets along the U.S. Atlantic coast, finding a faster rate of rise during the 20th century than any time in the past 2000 years.
Sea-level budgets account for the contributions of processes driving sea-level change, but are predominantly focused on global-mean sea level and limited to the 20th and 21st centuries. Here we estimate site-specific sea-level budgets along the U.S. Atlantic coast during the Common Era (0-2000 CE) by separating relative sea-level (RSL) records into process-related signals on different spatial scales. Regional-scale, temporally linear processes driven by glacial isostatic adjustment dominate RSL change and exhibit a spatial gradient, with fastest rates of rise in southern New Jersey (1.6 0.02 mm yr(-1)). Regional and local, temporally non-linear processes, such as ocean/atmosphere dynamics and groundwater withdrawal, contributed between -0.3 and 0.4 mm yr(-1) over centennial timescales. The most significant change in the budgets is the increasing influence of the common global signal due to ice melt and thermal expansion since 1800 CE, which became a dominant contributor to RSL with a 20th century rate of 1.3 +/- 0.1 mm yr(-1).Sea-level rise is an important part of climate change, but most sea-level budgets are global and cannot capture important regional changes. Here the authors estimate sea-level budgets along the U.S. Atlantic coast, finding a faster rate of rise during the 20th century than any time in the past 2000 years.
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