noaa-insect-9953
Moose Lake, Alaska 6000 Year Midge Inferred July Temperature
Clegg, B.F.; Clarke, G.H.; Chipman, M.L.; Chou, M.; Walker, I.R.; Tinner, W.; Hu, F.S.
Moose Lake, Alaska 6000 Year Midge Inferred July Temperature
2010-08-09
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/9953
Investigator
B.F.
Clegg
Investigator
G.H.
Clarke
Investigator
M.L.
Chipman
Investigator
M.
Chou
Investigator
I.R.
Walker
Investigator
W.
Tinner
Investigator
F.S.
Hu
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Dicrotendipes
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Microtendipes
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Phaenopsectra flavipes type
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,other Tanytarsina
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Endochironomus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Paratendipes
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Limnophyes
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Nanocladius
earth science
paleoclimate
insect|paleolimnology
total head capsules,null,null,count,null,insect|paleolimnology,raw,null,N,sum of identified headcapsules
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Corynocera ambigua
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Pseudochironomus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Pagastiella
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Stictochironomus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Psectrocladius (Mono-)
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Cladopelma
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Parachironomus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Parakiefferiella triquetra
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,null,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,null,N,null
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Polypedilum
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Corynoneura/Thienemanniella
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Psectrocladius (Allo-/Meso-)
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,other Pentaneurini
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Ceratopogonidae
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,unidentified headcapsules
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Einfeldia
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
depth at sample end,null,null,centimeter,null,climate reconstructions|insect|paleolimnology,null,null,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,count,null,insect|paleolimnology,raw,null,N,Stempellinella/Zavrelia
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Chironomus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Cryptochironomus
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Orthocladinae sp. 2
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Pseudosmittia/Smittia
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
age,null,two standard deviations,calendar year before present,null,climate reconstructions|insect|paleolimnology,null,null,N,2 sigma error estimate of calibrated 14C age
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Micropsectra
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Cryptotendipes
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Glyptotendipes
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Parakiefferiella sp.B/bathophila
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Psectrocladius (Psectrocladius)
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Psectrocladius (Mono-) septentrionalis
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,1st instar headcapsules
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface air temperature,midge assemblage,one standard error,degree Celsius,Jul,climate reconstructions|insect|paleolimnology,null,null,N,sample-specific standard error of prediction
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
depth at sample start,null,null,centimeter,null,climate reconstructions|insect|paleolimnology,null,null,N,null
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Cladotanytarsus mancus type
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Sergentia
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Cricotopus/Orthocladius
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Heterotrissocladius
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Zalutschia sp.1
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Labrundinia
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Procladius
earth science
paleoclimate
insect|paleolimnology
identified midge,null,null,count,null,insect|paleolimnology,raw,null,N,Chaoborus mandibles
earth science
paleoclimate
insecta
population abundance
geoscientificInformation
Air Temperature Reconstruction
Arctic
thermal maximum
6007 cal yr BP
-20 cal yr BP
Complete
61.3742
61.3742
-143.5988
-143.5988
437
437
Continent
North America
United States Of America
Alaska
Moose Lake Alaska>LATITUDE 61.3742>LONGITUDE -143.5988
None
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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
Clegg, B.F., G.H. Clarke, M.L. Chipman, M. Chou, I.R. Walker,
W. Tinner, and F.S. Hu. 2010.
Six Millennia of Summer Temperature Variation Based on Midge
Analysis of Lake Sediments from Alaska.
Quaternary Science Reviews., Vol. 29, Issues 23-24, November 2010, pp. 3308-3316. DOI: 10.1016/j.quascirev.2010.08.001
Despite their importance for evaluating anthropogenic climatic
change, quantitative temperature reconstructions of the Holocene
remain scarce from northern high latitude regions. We conducted
high-resolution midge analysis on the sediments of the past 6000
years from a lake in south-central Alaska. Results were used to
estimate summer temperature (TJuly) variations on the basis of a
midge temperature transfer function. The TJuly estimates from the
near-surface samples are broadly consistent with instrumental and
treering-based temperature data. Together with previous studies,
these results suggest that midge assemblages are more sensitive
to small shifts in summer temperature (~0.5°C) than indicated by
the typical error range of midge temperature transfer functions
(~1.5°C). A piecewise linear regression analysis identifies a
significant change point at ca. 4000 years before present
(cal. BP) in our TJuly record, with a decreasing trend after
this point. Episodic TJuly peaks (~14.5°C) between 5500 and 4200
cal. BP and the subsequent climatic cooling may have resulted
from decreasing summer insolation associated with the
precessional cycle. Centennial-scale climatic cooling of up to
1°C occurred around 4000, 3300, 1800-1300, 600, and 250 cal. BP.
These cooling events were more pronounced and lasted longer
during the last two millennia than between 2000-4000 cal. BP.
Some of these events have counterparts in climatic records from
elsewhere in Alaska and other regions of the Northern Hemisphere,
including several roughly synchronous with known grand minima
in solar irradiance. Over the past 2000 years, our TJuly record
displays patterns similar to those inferred from a wide variety
of temperature proxy indicators at other sites in Alaska,
including climatic fluctuations coeval with the Little Ice Age
(~245 cal. BP), the Medieval Climate Anomaly (~1000 cal. BP),
and the First Millennial Cooling (~1400 cal. BP). To our knowledge,
this study offers the first high-resolution, quantitative record
of summer-temperature variation that spans longer than the past
2000 years from the high-latitude regions around the North Pacific.
STUDY NOTES: Multi-decadal midge assemblage and midge-inferred July temperature
data for Moose Lake, Alaska, for the past 6000 years.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/usa/alaska/moose2010.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/insecta/chironomidae/northamerica/usa/alaska/moose2010.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11