noaa-lake-36776 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2025-05-07 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Yukon-Kuskokwim Delta, Alaska, Last millennium lake sediment macrocharcoal, biomarker, and geochemical data 2022-08-25 publication doi:10.25921/swff-7y78 noaa-lake-36776 NCEI DSI 1200_02 NCEI DSI 1200_01 Sae-Lim, J. originator Sae-Lim, J. author Russell, J.M. originator Russell, J.M. author Vachula, R.S. originator Vachula, R.S. author Holmes, R.M. originator Holmes, R.M. author Mann, P.J. originator Mann, P.J. author Schade, J.D. originator Schade, J.D. author Natali, S.M. originator Natali, S.M. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Lake. The data include parameters of paleolimnology with a geographic location of Alaska, United States Of America. The time period coverage is from 948 to -65 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and environment derived from lake sediment records. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-lake.png Paleoclimatology - Lake PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > fire history|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology > geochemistry earth science > paleoclimate > paleolimnology > carbon isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Air Temperature Reconstruction Arctic Other Reconstruction theme What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: air temperature; Material: glycerol dialkyl glycerol tetraether index What: depth; Material: null What: titanium; Material: null What: calcium; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: charcoal; Material: null What: fire frequency; Material: null What: nitrogen; Material: null What: manganese; Material: null What: zirconium; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: age at sample end; Material: null What: volume; Material: null What: depth; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: air temperature; Material: glycerol dialkyl glycerol tetraether index What: pH; Material: glycerol dialkyl glycerol tetraether index|soil What: pH; Material: glycerol dialkyl glycerol tetraether index|soil What: zinc; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: air temperature; Material: glycerol dialkyl glycerol tetraether index What: age; Material: null What: carbon; Material: null What: iron; Material: null What: age; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: charcoal; Material: null What: potassium; Material: null What: rubidium; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null What: charcoal; Material: null What: charcoal; Material: null What: strontium; Material: null What: notes; Material: null What: branched glycerol dialkyl glycerol tetraether; Material: null theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Continent > North America > United States Of America > Alaska > Lake Lin (unofficial name) > LATITUDE 61.28721 > LONGITUDE -163.26052 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Sae-Lim, J.; Russell, J.M.; Vachula, R.S.; Holmes, R.M.; Mann, P.J.; Schade, J.D.; Natali, S.M. (2022-08-25): NOAA/WDS Paleoclimatology - Yukon-Kuskokwim Delta, Alaska, Last millennium lake sediment macrocharcoal, biomarker, and geochemical data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/swff-7y78. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions 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. Temperature-controlled tundra fire severity and frequency during the last millennium in the Yukon-Kuskokwim Delta, Alaska 2019 publication Sae-Lim, J., Russell, J.M., Vachula, R.S., Holmes, R.M., Mann, P.J., Schade, J.D., and Natali, S.M. author The Holocene publisher https://doi.org/10.1177/0959683619838036 HTTPS Web Browser Associated Reference published 2019 Sae-Lim, J., Russell, J.M., Vachula, R.S., Holmes, R.M., Mann, P.J., Schade, J.D., and Natali, S.M., 2019: Temperature-controlled tundra fire severity and frequency during the last millennium in the Yukon-Kuskokwim Delta, Alaska. The Holocene, 29, 1223-1233, 10.1177/0959683619838036 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 948 cal yr BP to -65 cal yr BP; -163.26052 -163.26052 61.28721 61.28721 Study Coordinates 61.28721 -163.26052 1002 2015 STUDY NOTES: Provided Keywords: Arctic, Alaska, Paleofire, late Holocene, GDGTs, charcoal ABSTRACT SUPPLIED BY ORIGINATOR: Wildfire is an important disturbance to Arctic tundra ecosystems. In the coming decades, tundra fire frequency, intensity, and extent are projected to increase because of anthropogenic climate change. To more accurately predict the effects of climate change on tundra fire regimes, it is critical to have detailed knowledge of the natural frequency and extent of past wildfires and how they responded to past climate variability. We present analyses of fire frequency and temperature from a lake sediment core from the Yukon-Kuskokwim (YK) Delta. Our ca. 1000 macroscopic charcoal record shows more frequent but possibly less severe tundra fires during the first half of the last millennium, whereas less frequent, possibly more severe fires characterize the latter half. Our temperature reconstruction, based on distributional changes of branched glycerol dialkyl glycerol tetraethers (brGDGTs), shows slightly warmer conditions from ca. AD 1000 to 1500, and cooler conditions thereafter (ca. AD 1500 to 2000), suggesting that fire frequency increases when climate is relatively warmer in this region. When wildfires occur more frequently, fire severity may decrease because of limited biomass (fuel source) accumulating between fires. The data suggest that tundra ecosystems are highly sensitive to climate change, and that a warmer climate, which is predicted to develop in the near future, will result in more frequent tundra wildfires. 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Native Format(s) https://doi.org/10.25921/swff-7y78 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/36776 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/lake HTTPS Information NCEI Lake Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/alaska/sae-lim2022/sae-lim2019-ykdelta-environmental.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/alaska/sae-lim2022/sae-lim2019-ykdelta-char.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/alaska/sae-lim2022/sae-lim2019-ykdelta-brgdgt.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21