ORCID Profile
0000-0003-0501-0155
Current Organisation
Nanyang Technological University
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Publisher: American Geophysical Union (AGU)
Date: 11-02-2022
DOI: 10.1029/2021GL095710
Abstract: The small number of reliable long‐term (i.e., yrs) tide gauges in tropical locations is a major source of uncertainty in modern sea‐level change. Coral microatolls record relative sea‐level (RSL) change over their lifetimes and have the potential to extend the instrumental record. Here, we examined a 20th and 21st century RSL record from two living coral microatolls from Mapur Island, Indonesia, which produced 16 sea‐level index points. We validated and combined the living coral microatoll data with tide gauge data to show RSL at Mapur Island was 0.0 ± 1.6 mm/yr (2σ) from 1915 to 1990 and 1.0 ± 2.1 mm/yr (2σ) from 1990 to 2019. Through the addition of microatoll RSL data we extended the record of modern sea‐level change by over 50 years and reduced its uncertainty by ∼50%.
Publisher: Springer Science and Business Media LLC
Date: 08-06-2023
DOI: 10.1038/S43247-023-00868-5
Abstract: Low elevation equatorial and tropical coastal regions are highly vulnerable to sea level rise. Here we provide probability perspectives of future sea level for Singapore using regional geological reconstructions and instrumental records since the last glacial maximum ~21.5 thousand years ago. We quantify magnitudes and rates of sea-level change showing deglacial sea level rose from ~121 m below present level and increased at averaged rates up to ~15 mm/yr, which reduced the paleogeographic landscape by ~2.3 million km 2 . Projections under a moderate emissions scenario show sea level rising 0.95 m at a rate of 7.3 mm/yr by 2150 which has only been exceeded (at least 99% probability) during rapid ice mass loss events ~14.5 and ~9 thousand years ago. Projections under a high emissions scenario incorporating low confidence ice-sheet processes, however, have no precedent during the last deglaciation.
Publisher: Research Square Platform LLC
Date: 18-11-2022
DOI: 10.21203/RS.3.RS-2157980/V1
Abstract: Low-lying equatorial islands are susceptible to relative sea level (RSL) rise. Here, we quantify magnitudes and rates of RSL change since the last glacial maximum (LGM) to provide probability perspectives of future sea level. Geological reconstructions and instrumental records from the Sunda Shelf and Singapore show RSL rose ~ 121 m at rates up to ~ 15 mm/yr since the LGM, which reduced the paleogeographic landscape by ~ 2.3 million km 2 . In the 20th century, RSL began to rise, increasing at a rate of ~ 1.7 mm/yr to ~ 2.2 mm/yr between 1915 and 2020 CE. Future projections under a moderate emissions scenario show RSL rising 0.95 m at a rate of 7.3 mm/yr by 2150 which has only been exceeded (at least 99% probability) during rapid ice melting events ~ 14.5 and ~ 9 thousand years ago. Future projections under a high emissions scenario incorporating low confidence ice-sheet processes, however, have no precedent since the LGM.
Publisher: Elsevier BV
Date: 11-2022
No related grants have been discovered for Tanghua Li.