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Paleoclimatologists use clues from natural "proxy" sources to estimate past climate conditions.
This collection of images represent some of the most used proxies. Please see the individual
data pages for information on each proxy type.
Clockwise from upper left:
Climate Reconstructions: Estimates of past climatic conditions based on paleoclimatic proxy data.
Ice Cores: Ice core being extruded from drill. Photo by Lonnie Thompson, The Ohio State University.
Paleoceanography: Icebergs in the North Atlantic. Photo by Ann Jennings, University of Colorado.
Coral: Coral core being extruded from drill. Photo by Maris Kazmers, SharkSong Photography.
Tree-Ring: Annual Rings in a Ponderosa Pine. Photo by Peter Brown, Rocky Mountain Tree-Ring Research.
Historical: Grape harvest date temperature reconstruction from R.S. Bradley (1991) on photo of grapes.
Pollen: Tithonia rotundiflora. Photo by Jerome Ward.
Insect: Bumblebee on Tithonia rotundiflora. Photo by Jerome Ward.
Plant Macrofossils: Ponderosa Pine cone and needles. US National Park Service photo.
Paleoclimatic Modeling: Global Temperature, 21,000 yrs BP, UK Met. Office HADAM2 model. NOAA graphic.
Lake Sediments: Laguna Pallcacocha, Ecuador. Photo by Chris Moy, Stanford University.
Speleothems: Stalactites and Stalagmites in Villars Cave, France. Photo by Dominique Genty, CNRS/LSCE.
Borehole: Drilling Rig, San Andreas Fault Observatory at Depth (SAFOD). US Geological Survey photo.
Paleofire: Fire scars in Ponderosa Pine. Photo by Peter Brown, Rocky Mountain Tree-Ring Research.
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http://lwf.ncdc.noaa.gov/paleo/about-collage.html Downloaded Friday, 04-Jul-2008 17:09:40 EDT Last Updated Tuesday, 17-Oct-2006 14:24:51 EDT by paleo@noaa.gov Please see the Paleoclimatology Contact Page or the NCDC Contact Page if you have questions or comments. |