Udara Amarathunga

Udara Amarathunga holds the position of Harry H. Hess Postdoctoral Research Fellow at Princeton University under the Sigman Laboratory. His research focuses on geochemistry, particularly investigating past oceanic and climatic changes through isotopic measurements and modeling. His work addresses critical questions about natural climate variability, including Arabian Sea denitrification over 200,000 years, North African climate evolution during the Pliocene, and Mediterranean-Atlantic gateway dynamics during the Late Miocene. Udara has actively participated in key projects such as IODP Expedition 401 and the CANYONS Voyage to Antarctica, contributing to understanding Antarctic bottom water production and Mediterranean hydrology.

His methodologies include nitrogen and oxygen isotope analysis, combined with theoretical models to reconstruct ocean properties. Recent studies explore the Messinian Salinity Crisis, Mid-Pliocene glaciation, and North African humid periods. Udara’s research integrates fieldwork, sediment core analysis, and interdisciplinary collaborations to bridge geological, climatological, and oceanographic perspectives.

Notable contributions include preliminary reports from IODP Expedition 401, which advanced understanding of Mediterranean-Atlantic gateway exchanges, and analyses linking monsoon dynamics to Mediterranean hydrology. His work has implications for predicting modern climate system behaviors through paleoenvironmental analogs. Udara maintains no recorded awards but actively engages with international oceanographic initiatives, contributing to both field expeditions and laboratory-based research.