Denali, Alaska Snowpit and Firn Core Chemistry Data Kelsey, E.P.; Wake, C.; Kreutz, K.J.; Osterberg, E. Kelsey, E.P. Wake, C. Kreutz, K.J. Osterberg, E. 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 (Kahiltna Pass>LATITUDE 63.07>LONGITUDE -151.17) 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/ NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Kelsey, E.P. Investigator : Wake, C. Investigator : Kreutz, K.J. Investigator : Osterberg, E. 2011-01-13 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10070 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.xls https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.xls English https://www.ncdc.noaa.gov/paleo/study/10070 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/trop/denali/denali2008.xls 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 START YEAR: 2003 AD * END YEAR: 2008 AD -151.17 63.07 -151.17 63.07