noaa-lake-12259
Lago Plomo Varve 470 Year Winter Precipitation Reconstruction
Elbert, J.; Grosjean, M.; von Gunten, L.; Urrutia, R.; Fischer, D.; Wartenburger, R.; Ariztegui, D.; Fujak, M.
Lago Plomo Varve 470 Year Winter Precipitation Reconstruction
2011-11-16
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12259
Investigator
J.
Elbert
Investigator
M.
Grosjean
Investigator
L.
von Gunten
Investigator
R.
Urrutia
Investigator
D.
Fischer
Investigator
R.
Wartenburger
Investigator
D.
Ariztegui
Investigator
M.
Fujak
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
precipitation,null,null,millimeter per month,Jun-Aug,climate reconstructions|paleolimnology,null,null,N,based on mass accumulation rate
earth science
paleoclimate
paleolimnology
varve thickness,sediment,null,millimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
accumulation rate,sediment,null,milligram per square centimeter per year,null,paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
precipitation,null,97.5% confidence interval lower bound,millimeter per month,Jun-Aug,climate reconstructions|paleolimnology,null,null,N,based on mass accumulation rate
earth science
paleoclimate
climate reconstructions|paleolimnology
precipitation,null,97.5% confidence interval upper bound,millimeter per month,Jun-Aug,climate reconstructions|paleolimnology,null,null,N,based on mass accumulation rate
earth science
paleoclimate
paleolimnology
reconstruction
earth science
paleoclimate
paleolimnology
physical properties
geoscientificInformation
PAGES 2k Network
PAGES LOTRED SA2k
Precipitation Reconstruction
1530 AD
2000 AD
420 cal yr BP
-50 cal yr BP
Complete
-46.9833
-46.9833
-72.8667
-72.8667
203
203
Continent
South America
Chile
Lago Plomo>LATITUDE -46.9833>LONGITUDE -72.8667
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
Elbert, J., M. Grosjean, L. von Gunten, R. Urrutia, D. Fischer,
R. Wartenburger, D. Ariztegui, and M. Fujak. 2012.
Quantitative high-resolution winter (JJA) precipitation reconstruction
from varved sediments of Lago Plomo 47°S, Patagonian Andes, AD 1530-2001.
The Holocene, 22(4), 465-474. doi:10.1177/0959683611425547
High-resolution climate reconstructions from a range of natural
archives across the world are fundamental to place current climate
change into perspective. Paleoclimate records for the Southern
Hemisphere are scarce and only a few quantitative high-resolution
reconstructions exist for the past millennium. We present a record
of annually laminated sediments of Lago Plomo (46°59'S, 72°52'W,
203 m a.s.l.) located east of the Northern Patagonian Ice Field
(NPI). Radiometric dating (210Pb, 137Cs, 14C AMS) is consistent
with counts of millimetre-scale laminae, confirming the annual
nature of the laminae couplets with a light summer and a dark
winter layer. The varves were analyzed for thickness, mass
accumulation rate (MAR), scanning x-ray fluorescence (XRF)
and scanning reflectance spectroscopy in the visible range
(VIS-RS). MAR data were calibrated against austral winter (JJA)
precipitation data (CRU TS 3.0) for the period AD 1930–2002
(r = 0.67, p (aut) < 0.05). Using a linear inverse regression
model we reconstructed winter precipitation for Lago Plomo
back to AD 1530. The root mean squared error of prediction (RMSEP)
is small (13.3 mm/month; 12% of the average precipitation)
compared with the pronounced decadal and multidecadal variability,
suggesting that most of the reconstructed variability is significant.
Wetter phases (reference AD 1930-2002) were observed around AD 1600,
AD 1630-1690 and AD 1780-1850, and a prolonged drier period AD 1690-
1780 with a multidecadal minimum centered on AD 1770. The spatial
correlation for South America suggests that the JJA precipitation
record from Lago Plomo is representative for large areas in the
southwest between c. 41°S and 51°S.
STUDY NOTES: Austral Winter (JJA) precipitation reconstruction from
varved sediments collected in Lago Plomo, Patagonian Andes.
Mass accumulation rate (MAR) data correlate with austral
winter (JJA) precipitation data (CRU TS 3.0), and are used
to develop the 470 year austral winter precipitation
reconstruction. For the reconstruction, the raw MAR data
was detrended with LOESS and a 5 year filter was applied.
The record indicates lower winter precipitation (with regard
to the twentieth century) for the second half of the sixteenth
century followed by two decades with higher precipitation
AD 1590-1610. Precipitation falls below the twentieth-century
mean AD 1610-1630 while the second half of the seventeenth
century was very humid. The eighteenth century experiences
greater variability and generally very dry conditions.
The end of the eighteenth century is characterized by a sharp
rise in precipitation above average AD 1780-1850, followed by
drying until the end of the nineteenth century. Decadal and
multidecadal variability is pronounced during the entire record.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/chile/plomo2012.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/chile/plomo2012.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11