Found 7 datasets

Datasets Project Group Resources

Climate-Driven Ecosystem Succession in the Sahara: The Past 6000 Years doi Spatial Temporal

Desiccation of the Sahara since the middle Holocene has eradicated all but a few natural archives recording its transition from a “green Sahara” to the present hyperarid desert. Our continuous 6000-year paleoenvironmental reconstruction from northern Chad shows progressive drying of the regional terrestrial ecosystem in response to weakening insolation forcing of the African monsoon and abrupt hydrological change in the local aquatic ecosystem controlled by site-specific thresholds. Strong reductions...
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Lake Prespa Pollen Data 320cm doi Spatial Temporal

Pollen assemblages of a sediment sequence (Co1215) from Lake Prespa reveal substantial vegetational and environmental changes on a regional scale for the Lateglacial and Holocene. The age-depth model, based on radiocarbon dating and tephrochronology, indicates continuous sedimentation for the last c. 17 000 cal BP. An open landscape with prominent cold-resistant steppe vegetation and isolated tree patches (mainly Pinus) is inferred for the Lateglacial...

PalaeoClimate Classifications (PMIP2 Köppen-Geiger) Spatial Temporal

This dataset represents palaeo climate classification according to the updatede Köppen-Geiger [1] classification scheme. The classifiaction is derived from the PMIP2 [2] palaeoenvironmental simulations data for the time virables of LGM (21k), Mid-holocene (6k) and Pre-Industrial (0k). For the LGM, a LandMask consisting of the -120m coastline [3] was used, for the Mid-Holocene and Pre-Industrial classifications the coastlines of today [4] wehere used. [1] MARKUS KOTTEK, JÜRGEN GRIESER, CHRISTOPH BECK,...

PMIP2 LGM Precipitation Spatial Temporal

Last Glacial Maximum (LGM) Precipitation simulation Shapefiles of the PMIP2 "21k OAV ECHAM53-MPIOM127-LPJ" Experiment. The data is provided as Point data, representing the center of each Gridcell and as Thissenpolygons derived from the Gridcell center point data. Variable: pr Experiment: 21k OAV ECHAM53-MPIOM127-LPJ Desc: precipitation_flux     kg m-2 s-1     Total precipitation     XYT     O     O     O           A1a2 A2a2A3_2 Info:...
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PMIP2 LGM Air Temperature Spatial Temporal

Last Glacial Maximum (LGM) Air Temperature simulation Shapefiles of the PMIP2 21k OAV ECHAM53-MPIOM127-LPJ Experiment. The date is provided as Point data, representig the center of each Gridcell and as Thessenpolygons derived from the Gridcell center point data. Variable: ta Experiment: 21k OAV ECHAM53-MPIOM127-LPJ Desc: air temperature     K     Air temperature     XYPT     Pbm     P3     P17           A1c2 A2b1 Info: Citation:  Braconnot,...
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Stage3 Climate and Plantcover Simulations Spatial Temporal

Landmask clipped Thissenpolygon Shapefiles of the Stage3 Climate &amp=& Plantcover Simulations (PSU).For each Stage3 scenario (21k, adhoc, cold, mod and warm), you can find the Thissenpolygons clipped to the combinded (land ice) masks as Shapefiles. Contents: Stage3_21k_Thiessen.shp Stage3_adhoc_Thiessen.shp Stage3_cold_Thiessen.shp Stage3_mod_Thiessen.shp Stage3_warm_Thiessen.shp Disclaimer: This dataset consists of Shapefiles processed out of the Stage3 Climate...

BIOME 4-2 Shapefiles Spatial Temporal PaleoMaps

BIOME v4.2 Dataset processed as geodata in Shapefile format for the use with geospatial applications (GIS) Attribution/References: Harrison, S. P., and Prentice, I. C. (2003). Climate and CO2 controls on global vegetation distribution at the last glacial maximum: analysis based on palaeovegetation data, biome modelling and palaeoclimate simulations. Global Change Biology 9, 983-1004.
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