noaa-icecore-10070 Denali, Alaska Snowpit and Firn Core Chemistry Data Kelsey, E.P.; Wake, C.; Kreutz, K.J.; Osterberg, E. Denali, Alaska Snowpit and Firn Core Chemistry Data 2011-01-13 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/10070 Investigator E.P. Kelsey Investigator C. Wake Investigator K.J. Kreutz Investigator E. Osterberg earth science paleoclimate ice cores notes,null,null,null,null,ice cores,null,null,C,null earth science paleoclimate ice cores sodium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores copper,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores depth,null,null,centimeter,null,ice cores,null,null,N,null earth science paleoclimate ice cores ice age,null,null,year Common Era,null,ice cores,null,null,N,null earth science paleoclimate ice cores sulfur,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate instrumental wind speed,null,null,meter per second,null,instrumental,null,null,N,vector earth science paleoclimate ice cores magnesium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores zinc,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores depth at sample start,null,null,centimeter,null,ice cores,null,null,N,water equivalent earth science paleoclimate ice cores depth,null,null,centimeter,null,ice cores,null,null,N,water equivalent earth science paleoclimate ice cores delta 2H,bulk ice,null,per mil SMOW,null,ice cores,null,isotope ratio mass spectrometry,N,null earth science paleoclimate ice cores cadmium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores bismuth,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate instrumental collection date,null,null,year Common Era,null,instrumental,null,null,N,null earth science paleoclimate instrumental air temperature,null,null,degree Celsius,null,instrumental,null,null,N,null earth science paleoclimate instrumental relative humidity,null,null,percent,null,instrumental,null,null,N,null earth science paleoclimate instrumental surface downwelling shortwave radiation,null,null,watt per square meter,null,instrumental,null,null,N,null earth science paleoclimate instrumental wind speed,null,null,knot,null,instrumental,null,null,N,scalar earth science paleoclimate ice cores depth at sample end,null,null,centimeter,null,ice cores,null,null,N,water equivalent earth science paleoclimate ice cores cesium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores lanthanum,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores praseodymium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores uranium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores calcium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores chromium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores depth at sample end,null,null,centimeter,null,ice cores,null,null,N,null earth science paleoclimate ice cores potassium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate instrumental collection date,null,null,day of year,null,instrumental,null,null,N,null earth science paleoclimate instrumental wind direction,null,null,degree,null,instrumental,null,null,N,null earth science paleoclimate ice cores sample identification,null,null,null,null,ice cores,null,null,C,null earth science paleoclimate ice cores delta 2H,bulk ice,null,per mil SMOW,null,ice cores,smoothed,isotope ratio mass spectrometry,N,5 point smooth earth science paleoclimate ice cores density,bulk ice,null,gram per cubic centimeter,null,ice cores,null,null,N,null earth science paleoclimate instrumental collection date,null,null,day of month,null,instrumental,null,null,N,null earth science paleoclimate ice cores depth at sample start,null,null,centimeter,null,ice cores,null,null,N,null earth science paleoclimate ice cores lithium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores aluminum,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores manganese,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores iron,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate instrumental collection date,null,null,hour of day,null,instrumental,null,null,N,null earth science paleoclimate ice cores cobalt,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores cerium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores lead,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores arsenic,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate instrumental collection date,null,null,month of year,null,instrumental,null,null,N,null earth science paleoclimate instrumental wind speed,null,null,meter per second,null,instrumental,null,null,N,scalar earth science paleoclimate instrumental wind direction,null,one standard deviation,degree,null,instrumental,null,null,N,null earth science paleoclimate ice cores strontium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores barium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores titanium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate ice cores vanadium,bulk ice,null,nanogram per gram,null,ice cores,null,null,N,null earth science paleoclimate instrumental wind speed,null,null,knot,null,instrumental,null,null,N,vector earth science paleoclimate ice core chemistry geoscientificInformation 2003 AD 2008 AD -53 cal yr BP -58 cal yr BP Complete 63.07 63.07 -151.17 -151.17 2970 2970 Continent North America United States Of America Alaska Kahiltna Pass>LATITUDE 63.07>LONGITUDE -151.17 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 Kelsey, E., C. Wake, K. Kreutz, and C. Osterberg. 2010. Ice layers as an indicator of summer warmth and atmospheric blocking in Alaska. Journal of Glaciology, Vol. 56, No. 198, pp. 715-718. DOI: 10.3189/002214310793146214

Samples were collected from a snow pit and shallow firn core near Kahiltna Pass (2970ma.s.l.), Denali National Park, Alaska, USA, in May 2008. The record spans autumn 2003 to spring 2008 and reveals clusters of ice layers interpreted as summertime intervals of above-freezing temperatures. High correlation coefficients (0.75-1.00) between annual ice-layer thickness and regional summertime station temperatures for 4 years (n = 4) indicate ice-layer thickness is a good proxy for mean and extreme summertime temperatures across Alaska, at least over the short period of record. A Rex-block (aka high-over-low) pattern, a downstream trough over Hudson Bay, Canada, and an upstream trough over eastern Siberia occurred during the three melting events that lasted at least 2 weeks. About half of all shorter melting events were associated with a cut-off low traversing the Gulf of Alaska. We hypothesize that a surface-to-bedrock core extracted from this location would provide a high-quality record of summer temperature and atmospheric blocking variability for the last several hundred years. STUDY NOTES: Data from 2008 firn core project on Denali. Included are snowpit and firn core chemistry data, automated weather station (AWS) data, and ground penetrating radar (GPR) data. In May 2008, samples were collected from a 4.35m deep snow pit and an 18.77m long, 8.2 cm diameter firn core drilled in the bottom of the pit, approximately 1 km south of Kahiltna Pass (KPass) at 2970m a.s.l, Denali National Park, Alaska. An additional snowpit at the Kahiltna base camp (2195ma.s.l.; 11km south-southeast of KPass) was sampled for chemistry. Hourly AWS data were recorded at the base camp from May 2008 to May 2009, and are included in this data set. Ground penetrating radar (GPR) raw data are presented in 6 .DZT files. GPR images are contained in a Microsoft PowerPoint file. These data plus the snow pit and firn chemistry data are archived at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.xls USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11