Determining Deglacial Climate from δ18O - The GISS-E2-rosetta
Abstract
A series of coupled atmosphere-ocean time slice experiments through the deglaciation (twelve experiments 24,000 ka to pre-industrial) were performed using the NASA Goddard Institute for Space Studies ModelE-2 (GISS-E2). These experiments were run to approximate equilibrium and equipped with water isotopologue tracers throughout the hydrologic cycle. For each of the time slices, the surface map was broken down into small regions (e.g., American Southwest, Mediterranean, West Antarctica), then these regions clustered into larger areas (continents), and then hemispheres. Within each area, the spatial relationship between δ18O-precipitation and surface climate (temperature, precipitation, relative humidity, moist static energy) is determined as well as the surface ocean (where applicable) spatial relationship between δ18O-ocean (For the atmosphere, movement of water is diagnosed within each time slice to provide the framework for explaining these spatially and temporally variable relationships between water isotopologues and climate.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFMPP31C2286L
- Keywords:
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- 3344 Paleoclimatology;
- ATMOSPHERIC PROCESSESDE: 4912 Biogeochemical cycles;
- processes;
- and modeling;
- PALEOCEANOGRAPHYDE: 4928 Global climate models;
- PALEOCEANOGRAPHYDE: 4944 Micropaleontology;
- PALEOCEANOGRAPHY