[Keyword='POLLEN']
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European 6K Climate Reconstructions Entry ID: NOAA_NCDC_PALEO_97-006 |
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Summary
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Abstract:
Palaeoclimates across Europe for 6000 yr BP were estimated from pollen data using the modern pollen analogue technique constrained with lake-level data. The constraint consists of restricting the set of modern pollen samples considered as analogues of the fossil samples to those locations where the implied change in annual precipitation minus evapotranspiration (PE) is consistent with the regional change in moisture balance as indicated by lakes. An artificial neural network was used for the spatial interpolation of lake-level changes to the pollen sites, and for mapping palaeoclimate anomalies. The climate variables reconstructed were mean temperature of the coldest month (Tc), growing degree days above 5C (GDD), moisture availability expressed as the ratio of actual to equilibrium evapotranspiration, and PE. The constraint improved the spatial coherency of the reconstructed palaeoclimate anomalies, especially for PE. The reconstructions indicate clear spatial and seasonal patterns of Holocene climate change, which can provide a quantitative benchmark for the evaluation of palaeoclimate model simulations. Winter temperatures (Tc) were 1-3 K greater than present in the far N and NE of Europe, but 2-4 K less than present in the Mediterranean region. Summer warmth (GDD) was greater than present in NW Europe (by 400-800 K day at the highest elevations) and in the Alps, but > 400 K day less than present at lower elevations in S Europe. PE was 50-250 mm less than present in NW Europe and the Alps, but was 10-15% greater than present in S Europe and PE was 50-200 mm greater than present in S and E Europe. |
Related URL
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Link:
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Description: Access to data and other Biome 6K data sets Link: VIEW RELATED INFORMATION Description: European 6K data documentation |
Geographic Coverage
| N: 70.0 | S: 30.0 | E: 45.0 | W: -15.0 |
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Data Set Citation
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Dataset Originator/Creator:
Rachid Cheddadi, Ge Yu, Joel Guiot, Sandy Harrison & Colin Prentice
Dataset Title: European Climate 6K Reconstruction Dataset Series Name: IGBP PAGES/WDC Data Contribution Series #: 97-006 Dataset Release Date: March 1997 Dataset Release Place: Boulder, CO Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology Issue Identification: 97-006 Other Citation Details: NOAA/NCDC Paleoclimatology Program Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/pollen/europe6k/readme_europ... |
Paleo_Temporal_Coverage
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Paleo Start Date:
6000 ybp
Paleo Stop Date: 0 ybp Chrono Unit: |
Location Keywords
Science Keywords
| PALEOCLIMATE >LAND RECORDS >MACROFOSSILS [Definition] |
| PALEOCLIMATE >LAND RECORDS >POLLEN [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >LAKE LEVELS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >MACROFOSSILS [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >AIR TEMPERATURE RECONSTRUCTION [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >DROUGHT/PRECIPITATION RECONSTRUCTION [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >POLLEN |
ISO Topic Category
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FARMING
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE GEOSCIENTIFIC INFORMATION OCEANS |
Project
| PAGES >Past Global Changes, IGBP [Information] |
| BIOME 6000 >Global Paleovegetation Mapping Project [Information] |
Keywords
| climate reconstruction |
| pollen |
| climate change |
| climate anomalies |
Data Set Progress
| COMPLETE |
Originating Center
| NOAA/NCDC |
Data Center
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World Data Center for Paleoclimatology, Boulder
[Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/
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Distribution
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Distribution_Media:
online ftp, www
Distribution_Format: ascii, excel Fees: none |
Personnel
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RACHID
CHEDDADI Role: INVESTIGATOR Phone: 33-4-90.96.18.18 Fax: 33-4-90.93.98.03 Email: rachid.cheddadi at ibhb.u-3mrs.fr Contact Address: European Pollen Database Centre Universitaire d'Arles City: Arles P Postal Code: 13200 Country: France |
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JOEL
GUIOT Role: INVESTIGATOR Phone: 04-91288011 Fax: 04-91288668 Email: joel.guiot at lbhp.u-3mrs.fr Contact Address: LBHP CNRS UA 1152 Faculte de St. Jerome Boite 451 Marseilles Cedex 20 Postal Code: 13397 Country: FRANCE |
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GE
YU Role: INVESTIGATOR |
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SANDY
P.
HARRISON Role: INVESTIGATOR Phone: +44 (0)117 33 17223 Fax: +44 (0)117 928 7878 Email: sandy.harrison at bristol.ac.uk Contact Address: BRIDGE School of Geographical Sciences University of Bristol University Road City: Bristol Postal Code: BS8 1SS Country: United Kingdom |
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I.
COLIN
PRENTICE Role: INVESTIGATOR Phone: +49 3641 576200 Email: Colin.Prentice at bristol.ac.uk Contact Address: Max-Planck Institute for Biogeochemistry P.O. Box 100164 Hans-Knoll-Str. 10 City: Jena Postal Code: 07745 Country: GERMANY |
Publications/References
Guiot J, Harrison SP, Prentice IC (1993) Reconstruction of Holocene
precipitation patterns in Europe using pollen and lake-level data. Quaternary Research 40: 139-149.
Cheddadi, R. Yu, G. Guiot, J., Harrison, S.P. and Prentice, I.C. (1997): The climate of Europe 6000 years ago. Climate Dynamics, 13: 1-9.
precipitation patterns in Europe using pollen and lake-level data. Quaternary Research 40: 139-149.
Cheddadi, R. Yu, G. Guiot, J., Harrison, S.P. and Prentice, I.C. (1997): The climate of Europe 6000 years ago. Climate Dynamics, 13: 1-9.
Creation and Review Dates
DIF Creation Date:
2004-03-23
Last DIF Revision Date:
2006-12-13
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