Carbon, climate, and ecosystem change in
GFDL's earth system models
Wednesday — June 25, 2014
Pacific Forum — 3:00 p.m.
For the Fifth Coupled Model Inter-comparison project, NOAA/GFDL contributed two Earth System Models to simulate coupled carbon-climate under anthropogenic forcing. To reduce uncertainty arising from representation in ocean physics, these two models compare ocean physics with vertical pressure layers (ESM2M) versus a bulk mixed layer and interior isopycnal layers (ESM2G). On land, both ESMs simulate competitive vegetation distributions and functioning with dynamic land use including secondary forest. In the ocean, both models include phytoplankton functional group dynamics with flexible stoichiometry to represent the coupled cycles of carbon, nitrogen, phosphorus, silicon, iron and lithogenic material. This presentation provides an overview the construction and simulation characteristics of GFDL's ESMs, how they are being applied to a suite of climate change, carbon system and marine ecosystem impacts studies, and conclude with description of GFDL's ongoing explorations into enhanced biogeochemical and ecological comprehensiveness as well as enhanced resolution for it's next generation ESMs.