NOAA/WDS Paleoclimatology - KR02 Lake Surface Temperature Reconstructions during the Past 11000 Years
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 Climate Reconstruction. The data include parameters of climate reconstructions|insect|paleolimnology with a geographic location of Northwest Territories, Canada. The time period coverage is from 10086 to -45 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
- Cite as: Gajewski, K.J.; Fortin, M.-C. (2020-04-15): NOAA/WDS Paleoclimatology - KR02 Lake Surface Temperature Reconstructions during the Past 11000 Years. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/eg82-h795. Accessed [date].
- Please refer to Credit tab for full citation information.
- doi:10.25921/eg82-h795
- noaa-recon-30821
- NCEI DSI 1200_02
- NCEI DSI 1200_01
noaa-recon-30821
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | Data Center Contact
NOAA World Data Service for Paleoclimatology 828-271-4800 paleo@noaa.gov |
Coverage Description | Date Range: 10086 cal yr BP to -45 cal yr BP; |
Time Period | -8136 to 1995 |
Spatial Bounding Box Coordinates |
N: 71.34
S: 71.34
E: -113.78
W: -113.78
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information |
STUDY NOTES: This dataset was contributed as part of the Temperature-12k project (https://doi.org/10.25921/4RY2-G808). Data were contributed to the project from the original data generators, who are listed in the Investigator field of this template file. Additional notes regarding the use of these data in the Temperature-12k project can be found in the LiPD file listed as an Online_Resource of this template file.
ABSTRACT SUPPLIED BY ORIGINATOR: Changes in chironomid species assemblages and community dynamics at Lake KR02, western Victoria Island were analysed to produce a record of environmental change over the Holocene for the western Arctic. Past air temperatures were inferred from the chironomid record using transfer function and modern analogue techniques, and past lake water pH was reconstructed using sediment carbonate and biogenic silica content. The early-Holocene (10.2–6.5 ka) was a warm period of high aquatic and terrestrial production. A further change in environmental conditions occurred at 4 ka and lasted for the next two millennia. Conditions warmed abruptly at 1.6 ka, and rapidly cooled at ~1.0 ka. A warming then started at 0.14 ka and continued through to recent times, although temperatures still remained cooler than those experienced prior to 6.5 ka. The climatic changes over the Holocene as recorded at Lake KR02 are consistent with those inferred from independent records from other sites on Victoria Island and across the Arctic. |
Purpose | Records of past temperature, precipitation, and other climate variables derived from paleoclimate proxies. Parameter keywords describe what was measured in this data set. Additional summary information can be found in the abstracts of papers listed in the data set citations. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Last Modified: 2023-09-01
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