NOAA/WDS Paleoclimatology - Mt. Hunter, Alaska 1,200 Year Ice Core Accumulation Data
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 Ice Core. The data include parameters of ice cores with a geographic location of Alaska, United States Of America. The time period coverage is from 1140 to -62 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
Dataset Citation
- Cite as: Winski, D.A.; Osterberg, E.; Ferris, D.G.; Kreutz, K.J.; Wake, C.; Campbell, S.; Hawley, R.; Roy, S.; Birkel, S.; Introne, D.S.; Handley, M. (2017-12-19): NOAA/WDS Paleoclimatology - Mt. Hunter, Alaska 1,200 Year Ice Core Accumulation Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5B56H0D. Accessed [date].
- Please refer to Credit tab for full citation information.
Dataset Identifiers
- doi:10.7289/V5B56H0D
- noaa-icecore-21970
- NCEI DSI 1200_02
- NCEI DSI 1200_01
ISO 19115-2 Metadata
noaa-icecore-21970
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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: 810 CE to 2012 CE; Date Range: 1140 cal yr BP to -62 cal yr BP; |
Time Period | 810 to 2012 |
Spatial Bounding Box Coordinates |
West: -151.0833
East: -151.0833
South: 62.9333
North: 62.9333
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information | STUDY NOTES: Reconstructed annual and seasonal snow accumulation data from the Mt. Hunter ice core. ABSTRACT SUPPLIED BY ORIGINATOR: Future precipitation changes in a warming climate depend regionally upon the response of natural climate modes to anthropogenic forcing. North Pacific hydroclimate is dominated by the Aleutian Low, a semi-permanent wintertime feature characterized by frequent low-pressure conditions that is influenced by tropical Pacific Ocean temperatures through the Pacific-North American (PNA) teleconnection pattern. Instrumental records show a recent increase in coastal Alaskan precipitation and Aleutian Low intensification, but are of insufficient length to accurately assess low frequency trends and forcing mechanisms. Here we present a 1200-year seasonally- to annually-resolved ice core record of snow accumulation from Mt. Hunter in the Alaska Range developed using annual layer counting and four ice-flow thinning models. Under a wide range of glacier flow conditions and layer counting uncertainty, our record shows a doubling of precipitation since ~1840 CE, with recent values exceeding the variability observed over the past millennium. The precipitation increase is nearly synchronous with the warming of western tropical Pacific and Indian Ocean sea surface temperatures. While regional 20th Century warming may account for a portion of the observed precipitation increase on Mt. Hunter, the magnitude and seasonality of the precipitation change indicate a long-term strengthening of the Aleutian Low. |
Purpose | Records of past temperature, precipitation, atmospheric trace gases, and other aspects of climate and environment derived from ice cores drilled on glaciers and ice caps around the world. 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. |
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Global Change Master Directory (GCMD) Science Keywords
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Last Modified: 2023-09-01
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov