noaa-lake-13015
Lake Silvaplana, Switzerland 765 Year Summer Temperature Reconstruction
Trachsel, M.; Grosjean, M.; Larocque-Tobler, I.; Schwikowski, M.; Blass, A.; Sturm, M.
Lake Silvaplana, Switzerland 765 Year Summer Temperature Reconstruction
2012-06-13
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13015
Investigator
M.
Trachsel
Investigator
M.
Grosjean
Investigator
I.
Larocque-Tobler
Investigator
M.
Schwikowski
Investigator
A.
Blass
Investigator
M.
Sturm
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface temperature,midge assemblage,null,degree Celsius,Jun-Aug,climate reconstructions|insect|paleolimnology,filtered,null,N,9-100 year band pass filtered; based on chironomids and biogenic silica
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
surface temperature,midge assemblage,null,degree Celsius,Jun-Aug,climate reconstructions|insect|paleolimnology,anomalized|filtered,null,N,9-100 year band pass filtered; anomalized with respect to 1961-1990 AD; based on chironomids and biogenic silica
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|insect|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
reconstruction
earth science
paleoclimate
paleolimnology
population abundance
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
Air Temperature Reconstruction
Medieval Climate Anomaly (MCA)
1181 AD
1945 AD
769 cal yr BP
5 cal yr BP
Complete
46.45
46.45
9.8
9.8
1800
1800
Continent
Europe
Western Europe
Switzerland
Lake Silvaplana>LATITUDE 46.45>LONGITUDE 9.8
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
Trachsel, M., M. Grosjean, I. Larocque-Tobler, M. Schwikowski,
A. Blass, and M. Sturm. 2010.
Quantitative summer temperature reconstruction derived from
a combined biogenic Si and chironomid record from varved sediments
of Lake Silvaplana(south-eastern Swiss Alps) back to AD 1177.
Quaternary Science Reviews, Vol. 29, pp. 2719-2730.
doi:10.1016/j.quascirev.2010.06.026
High-resolution quantitative temperature records are needed for
placing the recent warming into the context of long-term natural
climate variability. In this study we present a quantitative
high-resolution (9-year) summer (June-August) temperature
reconstruction back to AD 1177 for the south-eastern Swiss Alps.
This region is a good predictor for summer temperatures in large
parts of western and central Europe. Our reconstruction is based
on a combination of the high-frequency component of annually
resolved biogenic silica (bSi flux) data and the low-frequency
component of decadal chironomid-inferred temperatures from annually
laminated well dated sediments (varves) from proglacial Lake Silvaplana,
eastern Swiss Alps. For the calibration (period AD 1760-1949) we
assess systematically the effects of six different regression methods
(Type I regressions: Inverse Regression IR, Inverse Prediction IP,
Generalised Least Squares GLS; Type II regressions: Major Axis MA,
Ranged Major Axis RMA and Standard Major Axis SMA) with regard to
the predicted amplitude and the calibration statistics such as
root-mean-square error of prediction (RMSEP), reduction of error (RE)
and coefficient of efficiency (CE). We found a trade-off in the
regression model choice between a good representation of the amplitude
and good calibration statistics. The band-pass filtered bSi flux record
is in close agreement both in the structure and the amplitude with two
fully independent reconstructions spanning back to AD 1500 and AD 1177,
respectively. All known pulses of negative volcanic forcing are
represented as cold anomalies in the bSi flux record. Volcanic pulses
combined with low solar activity (Spörer and Maunder Minimum) are seen
as particularly cold episodes around AD 1460 and AD 1690. The combined
chironomid and bSi flux temperature record (RMSEP = 0.57°C) is in good
agreement with the glacier history of the Alps. The warmest (AD 1190)
and coldest decades (17th century; 1680-1700) of our reconstruction
coincide with the largest anomalies in the Alpine tree-ring based
reconstruction; both records show in the decadal variability an
amplitude of 2.8°C between AD 1180 and 1950, which is substantially
higher than the amplitude of hemispheric reconstructions. Our record
suggests that the current decade is slightly warmer than the
warmest decade in the pre-industrial time of the past 800 years.
STUDY NOTES: 765 year summer (JJA) temperature reconstruction for the Swiss Alps
based on biogenic silica and chironomids from Lake Silvaplana, Switzerland.
Lake Silvaplana, Switzerland: 46°27'N, 9°48'E, 1800m
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/switzerland/silvaplana2010b.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/switzerland/silvaplana2010b.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11