HR: 10:20h
AN: PP22A-01 INVITED    [Abstracts]
TI: PRISM Sea Surface Temperatures: Overview and new PRISM3 Low Latitude Pacific SSTs.
AU: * Dowsett, H J
EM: hdowsett@usgs.gov
AF: U.S. Geological Survey, 926A National Center, Reston, VA 20192,
AB: The Pliocene Research, Interpretation and Synoptic Mapping (PRISM) data set is a comprehensive paleoenvironmental reconstruction for the period ~3.3-3.0 Ma, now used in paleoclimate- model comparisons of periods of global warmth. PRISM data have been used by GISS and UKMO modeling groups interested in the mid-Pliocene as a possible analog for future climate change. Initially developed in the 1990's, the PRISM reconstruction has undergone major revision in the past two years. New data are available for almost every component of the climate system (sea-surface temperature [SST], sea-ice distribution, land-ice configuration, vegetation and land cover, sea-level and topography) which are being integrated into the PRISM3 reconstruction. Deep-sea bottom temperature data are still being developed. This presentation will summarize the development of the PRISM SST data set and focus on the new low latitude Pacific Ocean SST configuration based upon mutiproxy data and modeling efforts.
DE: 1600 GLOBAL CHANGE
DE: 1620 Climate dynamics (0429, 3309)
DE: 1622 Earth system modeling (1225)
DE: 4900 PALEOCEANOGRAPHY (0473, 3344)
DE: 4954 Sea surface temperature
SC: Paleoceanography and Paleoclimatology [PP]
MN: 2007 Fall Meeting