معرفی
Daniel Sigman is the Dusenbury Professor of Geological and Geophysical Sciences at Princeton University's Department of Geosciences. His research focuses on biogeochemistry of modern and ancient environments, particularly oceanic interactions with the global carbon cycle and climate change over ice-age cycles, alongside method development in isotope geochemistry. He is affiliated with Princeton's High Meadows Environmental Institute (HMEI) Grand Challenges Program.
- Biogeochemistry of marine nitrogen cycles
- Paleoclimatology through isotopic analysis
- Isotope geochemistry methodology
- Ice-age cycle dynamics
- Global carbon cycle interactions
- Water and biogeochemistry research
Recent publications highlight isotopic studies of nitrate assimilation, denitrification patterns along the GEOTRACES GP15 Pacific transect, and nitrogen cycling impacts in oxygen-deficient zones. His work explores Southern Ocean dynamics, coral reef nitrogen sources, and Late Cretaceous marine ecosystems through fish otolith isotopes.
Notable contributions include the Dusenbury Professorship and advancements in isotopic analysis techniques. Research spans oceanography, paleoceanographic proxies, and climate-biogeochemistry interactions, notably examining biogeochemical changes in polar oceans driving atmospheric CO2 shifts during glacial cycles.
