HOLSEA meetings have attracted over 70 scientists from 20 countries on the North American, European, African and Asian continents, including Australia and New Zealand.

HOLSEA activities are coordinated by four scientists:

To inform projections of sea-level rise in response to future climate change, this project aims to address two fundamental questions: a) how did global mean sea level (GMSL) change since the Last Glacial Maximum (LGM) and what were the contributions of the Greenland and Antarctic ice sheets and temperature-driven variations, and b) what were the trends, magnitudes, and driving mechanisms of spatial variability in relative sea level (RSL) during this period?


To answer these questions, we will 1) produce the first spatially-comprehensive, standardized global compilation of geological relative sea-level reconstructions from the LGM to present; 2) incorporate the geological data into hierarchical statistical models to address our research questions and make projections of spatial variability of RSL for regional scenarios of future sea-level rise; and 3) distribute the global dataset to the glacial isostatic adjustment modeling community to provide a high-quality standard for model tuning and optimization. The database and model outputs will be made freely available on a web-based platform and will provide a much-needed resource to the paleoclimate community.

Nicole Khan
University of Hong Kong
Erica Ashe
Rutgers University
Robert Kopp
Rutgers University
Benjamin Horton
Nanyang Technological University

Advisory committee:

Andrea Dutton, Simon Engelhart, Marc Hijma, Alessio Rovere, Ian Shennan, Torbjorn Törnqvist, and Matteo Vacchi

Sponsors and associated groups


IGCP Project 639

"Sea level change from minutes to millennia"