noaa-lake-12202
Perch and Dimple Lakes, Alaska 5000 Year Charcoal Data
Hu, F.S.; Higuera, P.E.; Walsh, J.E.; Chapman, W.L.; Duffy, P.A.; Brubaker, L.B.; Chipman, M.L.
Perch and Dimple Lakes, Alaska 5000 Year Charcoal Data
2011-10-06
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12202
Investigator
F.S.
Hu
Investigator
P.E.
Higuera
Investigator
J.E.
Walsh
Investigator
W.L.
Chapman
Investigator
P.A.
Duffy
Investigator
L.B.
Brubaker
Investigator
M.L.
Chipman
earth science
paleoclimate
paleolimnology
age at sample end,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
instrumental
temperature,null,null,degree Celsius,Jun-Sep,instrumental,null,null,N,from NCEP reanalysis
earth science
paleoclimate
paleoclimatic modeling
age,null,null,year Common Era,null,paleoclimatic modeling,null,null,N,null
earth science
paleoclimate
paleolimnology
depth at sample start,null,null,centimeter,null,paleolimnology,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
precipitation minus evaporation,null,null,millimeter,Jun-Sep,instrumental,null,null,N,from NCEP reanalysis
earth science
paleoclimate
instrumental
burned area,null,null,count,null,instrumental,null,null,N,count of MODIS hotspot points for the AR Fire from 15 July through 1 October 2007
earth science
paleoclimate
paleolimnology
volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,null
earth science
paleoclimate
instrumental
evaporation,null,null,millimeter,Jun-Sep,instrumental,null,null,N,from NCEP reanalysis
earth science
paleoclimate
instrumental
collection date,null,null,day of year,null,instrumental,null,null,N,null
earth science
paleoclimate
fire history|paleolimnology
charcoal,sediment,null,count,null,fire history|paleolimnology,null,null,N,# of charcoal pieces >180 um
earth science
paleoclimate
paleolimnology
depth at sample end,null,null,centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
instrumental
sea ice cover,null,null,square kilometer,null,instrumental,null,null,N,null
earth science
paleoclimate
paleolimnology
age at sample start,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
instrumental
burned area,null,null,square kilometer,null,instrumental,null,null,N,null
earth science
paleoclimate
paleolimnology
density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
fire history|paleolimnology
volume,wet sediment,null,milliliter,null,fire history|paleolimnology,null,null,N,null
earth science
paleoclimate
paleoclimatic modeling
burned area,null,null,square kilometer,null,paleoclimatic modeling,null,null,N,based on GBM model
earth science
paleoclimate
instrumental
precipitation,null,null,millimeter,Jun-Sep,instrumental,null,null,N,from NCEP reanalysis
earth science
paleoclimate
paleolimnology
mineralogy
geoscientificInformation
Arctic
4912 cal yr BP
-58 cal yr BP
Complete
68.9414
68.95
-150.4994
-150.2
400
400
Continent
North America
United States Of America
Alaska
Dimple Lake>LATITUDE 68.95>LONGITUDE -150.2
Continent
North America
United States Of America
Alaska
Perch Lake Alaska>LATITUDE 68.9414>LONGITUDE -150.4994
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
Hu, F.S., P.E. Higuera, J.E. Walsh, W.L. Chapman, P.A. Duffy,
L.B. Brubaker, and M.L. Chipman. 2010.
Tundra burning in Alaska: Linkages to climatic change
and sea ice retreat.
J. Geophys. Res., 115, G04002, doi:10.1029/2009JG001270.
Recent climatic warming has resulted in pronounced environmental
changes in the Arctic, including shrub cover expansion and sea ice
shrinkage. These changes foreshadow more dramatic impacts that will
occur if the warming trend continues. Among the major challenges
in anticipating these impacts are "surprises" stemming from changes
in system components that have remained relatively stable in the
historic record. Tundra burning is potentially one such component.
Here we report paleoecological evidence showing that recent tundra
burning is unprecedented in the central Alaskan Arctic within the
last 5000 years. Analysis of lake sediment cores reveals peak values
of charcoal accumulation corresponding to the Anaktuvuk River Fire
in 2007, with no evidence of other fire events throughout the past
five millennia in that area. Atmospheric reanalysis suggests that
the fire was favored by exceptionally warm and dry weather conditions
in summer and early autumn. Boosted regression tree modeling shows
that such conditions also explain 95% of the interannual variability
in tundra area burned throughout Alaska over the past 60 years
and that the response of tundra burning to climatic warming is
nonlinear. These results contribute to an emerging body of evidence
suggesting that tundra ecosystems can burn more frequently under
suitable climatic and fuel conditions. The Anaktuvuk River Fire
coincides with extreme sea ice retreat, and tundra area burned
in Alaska is moderately correlated with sea ice extent from 1979
to 2009 (r = -0.43, p = 0.02). Recurrences of large tundra fires
as a result of sea ice disappearance may represent a novel
manifestation of coupled marine-terrestrial responses to
climatic warming.
STUDY NOTES: Chronology, magnetic susceptibility, and macrosopic charcoal
(number of pieces >180 microns) from sediments of Dimple
and Perch Lakes, North Slope, Alaska.
Also included are modern and reanalysis data used to generate
Figures 2a, 2b, 3, and 4a of Hu et al. 2010.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/perch-dimple2010.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/perch-dimple2010.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11