noaa-lake-13664
West Greenland Holocene Lake Sediment Data
Axford, Y.; Losee, S.; Briner, J.P.; Francis, D.R.; Langdon, P.G.; Walker, I.R.
West Greenland Holocene Lake Sediment Data
2012-12-13
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13664
Investigator
Y.
Axford
Investigator
S.
Losee
Investigator
J.P.
Briner
Investigator
D.R.
Francis
Investigator
P.G.
Langdon
Investigator
I.R.
Walker
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,regression analysis,N,calibration data set: Eastern Canada Francis et al. 2006 and Eastern Canada Walker et al. 1997;reconstruction technique: Weighted averaging regression with tolerance downweighting
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsus sp. no spur
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Micropsectra sp.
earth science
paleoclimate
paleolimnology
organic matter,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,loss on ignition 550 degrees C for 2 hours
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Psectrocladius sordidellus
earth science
paleoclimate
insect|paleolimnology
age,null,null,calendar year before present,null,insect|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,regression analysis,N,weighted-averaging regression
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Paracladopelma sp.
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Procladius sp.
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,anomalized,regression analysis,N,anomalized from modern; calibration data set: Eastern Canada Francis et al. 2006 and Eastern Canada Walker et al. 1997; weighted averaging regression with tolerance downweighting
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,regression analysis,N,calibration data set: Eastern Canada Francis et al. 2006 and Walker et al. 1997; weighted-averaging regression
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,regression analysis,N,calibration data set: Eastern Canada Francis et al. 2006 and Walker et al. 1997; Weighted averaging regression with tolerance downweighting
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsini
earth science
paleoclimate
paleolimnology
biogenic silica,dry sediment,null,weight percent,null,paleolimnology,null,spectrophotometry,N,method of Mortlock and Froelich 1989 with 10% Na2CO3
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Chironomus larvula
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,regression analysis,N,calibration data set: Iceland Langdon et al. 2008; weighted-averaging partial least-squares regression
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,anomalized|averaged,null,N,"anomalized from modern, average of multiple reconstructions"
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Chironomus sp.
earth science
paleoclimate
paleolimnology
volume magnetic susceptibility,sediment,null,dimensionless (CGS system),null,paleolimnology,null,magnetic susceptibility measurement with point or surface sensor,N,null
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
age,null,null,calendar year before present,null,climate reconstructions|insect|paleolimnology,null,null,N,null
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Ablabesmyia sp.
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,anomalized,regression analysis,N,anomalized from modern; calibration data set: Eastern Canada Francis et al. 2006 and Eastern Canada Walker et al. 1997; weighted averaging regression
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,anomalized,regression analysis,N,anomalized from modern; calibration data set: Iceland Langdon et al. 2008; weighted averaging partial least-squares regression
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Orthocladiinae
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Dicrotendipes sp.
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanytarsus lugens type
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Corynoneura arctica
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,dimensionless,null,insect|paleolimnology,null,null,N,Oliveridia/Hydrobaenus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Cricotopus sp. type P
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Arctopelopia sp.
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,dimensionless,null,insect|paleolimnology,null,null,N,Cricotopus/Orthocladius
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Heterotrissocladius grimshawi
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Tanypodinae
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,percent,null,insect|paleolimnology,null,null,N,Metriocnemus hygropetricus
earth science
paleoclimate
paleolimnology
magnetic susceptibility
earth science
paleoclimate
paleolimnology
population abundance
earth science
paleoclimate
paleolimnology
physical properties
geoscientificInformation
10334 cal yr BP
-59 cal yr BP
Complete
69.05815
69.2416
-51.0305
-49.91605
170
285
Continent
North America
Greenland
North Lake>LATITUDE 69.2416>LONGITUDE -50.0272
Continent
North America
Greenland
Pluto Lake>LATITUDE 69.1087>LONGITUDE -51.0305
Continent
North America
Greenland
Iceboom Lake>LATITUDE 69.23535>LONGITUDE -50.0159
Continent
North America
Greenland
Loon Lake GND>LATITUDE 69.05815>LONGITUDE -49.91605
Continent
North America
Greenland
Fishtote Lake>LATITUDE 69.2281>LONGITUDE -50.9267
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
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Yarrow Axford, Shanna Losee, Jason P. Briner, Donna R. Francis, Peter G. Langdon, and Ian R. Walker. 2013.
Holocene temperature history at the western Greenland Ice Sheet margin reconstructed from lake sediments.
Quaternary Science Reviews, Vol. 59, pp. 87-100, 3 January 2013. DOI: 10.1016/j.quascirev.2012.10.024
Predicting the response of the Greenland Ice Sheet to future climate change presents a major challenge to climate science. Paleoclimate data from Greenland can provide empirical constraints on past cryospheric responses to climate change, complementing insights from contemporary observations and from modeling. Here we examine sedimentary records from five lakes near Jakobshavn Isbrae in central West Greenland to investigate the timing and magnitude of major Holocene climate changes, for comparison with glacial geologic reconstructions from the region. A primary objective of this study is to constrain the timing and magnitude of maximum warmth during the early to middle Holocene positive anomaly in summer insolation. Temperature reconstructions from subfossil insect (chironomid) assemblages suggest that summer temperatures were warmer than present by at least 7.1 ka (the beginning of the North Lake record; ka = thousands of years before present), and that the warmest millennia of the Holocene occurred in the study area between 6 and 4 ka. Previous studies in the Jakobshavn region have found that the local Greenland Ice Sheet margin was most retracted behind its present position between 6 and 5 ka, and here we use chironomids to estimate that local summer temperatures were 2-3°C warmer than present during that time of minimum ice sheet extent. As summer insolation declined through the late Holocene, summer temperatures cooled and the local ice sheet margin expanded. Gradual, insolation-driven millennial-scale temperature trends in the study area were punctuated by several abrupt climate changes, including a major transient event recorded in all five lakes between 4.3 and 3.2 ka, which overlaps in timing with abrupt climate changes previously documented around the North Atlantic region and farther afield at ~4.2 ka.
STUDY NOTES: Lake sediment proxy data from 5 Holocene lakes in West Greenland, located between Disko Bugt and the Greenland Ice Sheet near the coastal town of Ilulissat.
Proxy data include Magnetic Susceptibility (MS), Loss-on-Ignition (LOI), Biogenic Silica, and chironomid assembledges.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/loon2013.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/north2013chiro.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/fishtote2013chiro.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/iceboom2013.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/fishtote2013loims.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/north2013biosi.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/north2013loi.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/pluto2013.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11