noaa-lake-23089 Big Lake, Western Canada Past Six Millennia Sediment Data Cumming, B.F.; Laird, K.R.; Bennet, J.R.; Smol, J.P.; Salomon, A.K. Big Lake, Western Canada Past Six Millennia Sediment Data 2017-11-15 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23089 Investigator B.F. Cumming Investigator K.R. Laird Investigator J.R. Bennet Investigator J.P. Smol Investigator A.K. Salomon earth science paleoclimate climate reconstructions|lake levels|paleolimnology age,null,null,calendar year before present,null,climate reconstructions|lake levels|paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|lake levels|paleolimnology lake level,diatom assemblage,null,meter,null,climate reconstructions|lake levels|paleolimnology,null,null,N,this is lake depth earth science paleoclimate climate reconstructions|lake levels|paleolimnology lake level,diatom assemblage,null,meter,null,climate reconstructions|lake levels|paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|lake levels|paleolimnology age,null,null,year Common Era,null,climate reconstructions|lake levels|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology lake level geoscientificInformation 5534 cal yr BP -42 cal yr BP Complete 51.668 51.668 -121.45 -121.45 1030 1030 Continent North America Canada British Columbia Big Lake>LATITUDE 51.668>LONGITUDE -121.45 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Cumming, B. F.; Laird, K. R.; Bennett, J. R.; Smol, J. P.; Salomon, A. K. 2002 Proceedings of the National Academy of Sciences 99 25 10.1073/pnas.252603099

Understanding the role of fire in the Earth system, and particularly regional controls on its frequency and severity, is critical to risk assessment. Charcoal records from lake sediment and fire-scar networks from long-lived tree species have improved our understanding of long-term relationships between fire events and climate. This work has primarily focused on historically fire-prone ecosystems and regions. In the northeastern USA, where wildfire has been relatively infrequent in historical times, fire-risk assessments have incorporated little-to-no pre-historical data and little is known about long-term fire-climate relationships. We developed coupled, high-resolution records of moisture variability and fire from three ombrotrophic peatlands in Maine using testate amoebae and analysis of microscopic charcoal. Water-table depth reconstructions among the three sites were generally coherent, with high-magnitude dry and wet events corresponding within the uncertainty of age-depth models. At all sites, there was a significantly higher probability of fire events during high-magnitude droughts. However, although prolonged droughts were widespread and associated with higher probability of fire, the fire events were rarely synchronous among sites, with the exception of ~550 years before present (yr BP) when all three sites experienced both drought and fire. While fire has been relatively uncommon in the northeastern USA during the past century, our records clearly highlight the potential vulnerability of the region to future drought and fire impacts. Results also demonstrate the utility of coupled records of fire and climate in understanding regional fire-climate dynamics.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Big.Cumming.2002.txt NOAA Template File; Big Lake, Lake Depth Reconstruction (NOAA Template Format) GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Big.Cumming.2002.lpd Linked Paleo Data (LiPD) File Format; Big Lake, Lake Depth Reconstruction (LiPD Format) USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11