|
Middle Pliocene Paleoenvironmental Reconstruction: PRISM2 Entry ID: USGS_OF99-535 |
||||||||
|
[
Update this Record
]
|
Summary
|
Abstract:
As part of the USGS Global Change Research effort, the PRISM (Pliocene Research, Interpretation and Synoptic Mapping) Project has documented the characteristics of middle Pliocene climate on a global scale. The middle Pliocene was selected for detailed study because it spans the transition from relatively warm global climates when glaciers were absent or greatly reduced in the Northern Hemisphere to the generally cooler climates of the Pleistocene with expanded Northern Hemisphere ice sheets and prominent glacial-interglacial cycles. The purpose of this report is to document and explain the PRISM2 mid Pliocene reconstruction. The PRISM2 reconstruction consists of a series of 28 global scale data sets (Table 1) on a 2° latitude by 2° longitude grid. As such, it is the most complete and detailed global reconstruction of climate and environmental conditions older than the last glacial. PRISM2 evolved from a series of studies that summarized conditions at a large number of marine and terrestrial sites and areas (eg. Cronin and Dowsett, 1991; Poore and Sloan, 1996). The first global reconstruction of mid Pliocene climate (PRISM1) was based upon 64 marine sites and 74 terrestrial sites and included data sets representing annual vegetation and land ice, monthly sea surface temperature (SST) and sea-ice, sea level and topography on a 2°x2° grid (Dowsett et al. (1996) and Thompson and Fleming (1996)). The current reconstruction (PRISM2) is a revision of PRISM1 that incorporates several important differences: 1) Additional sites were added to the marine portion of the reconstruction to improve previous coverage. Sites from the Mediterranean Sea and Indian Ocean are incorporated for the first time in PRISM2. 2) All Pliocene sea surface temperature (SST) estimates were recalculated based upon a new core top calibration to the Reynolds and Smith (1995) adjusted optimum interpolation (AOI) SST data set. This reduced some of the problems previously encountered when different fossil groups were calibrated to different modern climatologies (Climate / Long Range Investigation Mapping and Predictions [CLIMAP], Goddard Institute for Space Sciences [GISS], Advanced Very High Resolution Radiometer [AVHRR], etc.). 3) PRISM2 uses a +25m rise in sea level for the Pliocene (PRISM1 used +35m), in keeping with much new data that has become available. 4) Although the change in global ice volume between PRISM1 and PRISM2 is minor, PRISM2 uses model results from Prentice (personal communication) to guide the areal and topographic distribution of Antarctic ice. This results in a more realistic Antarctic ice configuration in tune with the +25m sea level rise. |
Related URL
|
Link:
VIEW RELATED INFORMATION
Description: Access to documentation |
Geographic Coverage
| N: 90.0 | S: -90.0 | E: 180.0 | W: -180.0 |
|
Data Set Citation
|
Dataset Originator/Creator:
Dowsett, H.J., J.A. Barron, R.A. Poore, R.S.Thompson, T,M. Cronin, S.E.Ishman, and D.A.Willard
Dataset Title: Middle Pliocene Paleoenvironmental Reconstruction: PRISM2 Dataset Series Name: U.S. GEOLOGICAL SURVEY OPEN FILE REPORT 99-535 Dataset Release Date: 1999 Dataset Release Place: Reston, VA Dataset Publisher: U.S. Geological Survey Version: 1.0 Issue Identification: 99-535 Online Resource: http://pubs.usgs.gov/of/1999/of99-535/ |
Paleo_Temporal_Coverage
|
Paleo Start Date:
3.29 Ma
Paleo Stop Date: 2.97 Ma Chrono Unit: |
Location Keywords
|
GEOGRAPHIC REGION
> GLOBAL
|
Data Resolution
|
Latitude Resolution:
2 degree
Longitude Resolution: 2 degree Temporal Resolution: monthly, annual |
Science Keywords
| CRYOSPHERE >SNOW/ICE >ICE EXTENT [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >ICE EXTENT [Definition] |
| LAND SURFACE >TOPOGRAPHY >TERRAIN ELEVATION [Definition] |
| OCEANS >OCEAN TEMPERATURE >SEA SURFACE TEMPERATURE [Definition] |
| PALEOCLIMATE >LAND RECORDS >GLACIATION [Definition] |
| PALEOCLIMATE >LAND RECORDS >MICROFOSSILS [Definition] |
| PALEOCLIMATE >LAND RECORDS >PALEOVEGETATION [Definition] |
| PALEOCLIMATE >LAND RECORDS >POLLEN [Definition] |
| PALEOCLIMATE >LAND RECORDS >RADIOCARBON [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >ISOTOPES [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >MICROFOSSILS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >OXYGEN ISOTOPES [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >RADIOCARBON [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA SURFACE TEMPERATURE RECONSTRUCTION [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA LEVEL RECONSTRUCTION [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >VEGETATION RECONSTRUCTION [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >POLLEN |
| BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >OSTRACODS |
| BIOLOGICAL CLASSIFICATION >PROTISTS >AMOEBOIDS >FORAMINIFERS [Definition] |
| BIOLOGICAL CLASSIFICATION >PROTISTS >DIATOMS [Definition] |
| BIOLOGICAL CLASSIFICATION >PLANTS >MICROALGAE >DIATOMS |
ISO Topic Category
|
GEOSCIENTIFIC INFORMATION
|
Project
| PRISM >Pleistocene, Research, Interpretation, and Synoptic Mapping Project [Information] |
Keywords
| 99-535 |
| OFR |
| Open File Report |
| reconstructions |
| Pliocene |
| SST |
| ice volume |
| sea level |
Data Set Progress
| COMPLETE |
Originating Center
| USGS |
Data Center
|
Eastern Earth Surface Processes Team, Eastern Region, Geology Division, U.S. Geological Survey, U.S. Department of the Interior
[Information]
Data Center URL: http://geology.er.usgs.gov/eespteam/
| |||
Distribution
|
Distribution_Media:
online
Distribution_Format: PDF Fees: none |
Personnel
|
HARRY
J.
DOWSETT Role: INVESTIGATOR Contact Address: U.S. Geological Survey 955 National Center City: Reston Province or State: VA Postal Code: 20192 Country: USA |
|
JOHN
A.
BARRON Role: INVESTIGATOR Contact Address: U.S. Geological Survey 345 Middlefield Rd. City: Menlo Park Province or State: CA Postal Code: 94025 Country: USA |
|
RICHARD
Z.
POORE Role: INVESTIGATOR Phone: 727-803-8747 x3131 Fax: 727-803-2032 Email: rpoore at usgs.gov Contact Address: St. Petersburg Coastal and Marine Science Center 600 Fourth Street South City: St. Petersburg Province or State: FL Postal Code: 33701 Country: USA |
|
ROBERT
S.
THOMPSON Role: INVESTIGATOR Contact Address: U.S. Geological Survey Box 25046, MS 919 Denver Federal Center City: Denver Province or State: CO Postal Code: 80225 Country: USA |
|
THOMAS
MARK
CRONIN Role: INVESTIGATOR Phone: 703-648-6363 Fax: 703-648-6032 Email: tcronin at usgs.gov Contact Address: U.S. Geological Survey 12201 Sunrise Valley Drive City: Reston Province or State: VA Postal Code: 20192 Country: USA |
|
SCOTT
E
ISHMAN Role: INVESTIGATOR Phone: 618-453-7377 Fax: 618-453-7393 Email: sishman at geo.siu.edu, sishman at siu.edu Contact Address: Department of Geology, MC 4324 Southern Illinois University 1259 Lincoln Drive City: Carbondale Province or State: IL Postal Code: 62901 Country: USA |
|
DEBRA
A.
WILLARD Role: INVESTIGATOR Phone: (703) 648-5320 Fax: (703) 648-6953 Email: dwillard at geochange.er.usgs.gov Email: dwillard at mailrvag2.er.usgs.gov Contact Address: MS 926A National Center U.S. Geological Survey City: Reston Province or State: VA Postal Code: 20192 Country: USA |
Publications/References
Scatterometer Climate Record Pathfinder. 2007. http://www.scp.byu.edu/ 6 March 2008. Falcon, Peter and Cecelia Lawshe. 'Jet Propulsion Laboratory, California Institute of Technology.' Winds: Measuring Ocean Winds from Space. http://winds.jpl.nasa.gov/index.cfm 6 March 2008. SMEX03: Soil Moisture Experiments in 2003. 23 October 2006. http://hydrolab.arsusda.gov/smex03/ 29 October 2007.
Creation and Review Dates
DIF Creation Date:
2008-03-05
Last DIF Revision Date:
2010-03-09
| [ Update this Record ] |
