noaa-recon-13644
Jämtland 900 Year Tree Ring MXD Temperature Reconstruction
Gunnarson, B.E.; Linderholm, H.W.; Moberg, A.
Jämtland 900 Year Tree Ring MXD Temperature Reconstruction
2012-12-19
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13644
Investigator
B.E.
Gunnarson
Investigator
H.W.
Linderholm
Investigator
A.
Moberg
earth science
paleoclimate
climate reconstructions|tree ring
age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,null,degree Celsius,Apr-Sep,climate reconstructions|tree ring,filtered,null,N,based on latewood density; RCS method 30-yr filtered
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,null,degree Celsius,Apr-Sep,climate reconstructions|tree ring,null,null,N,based on latewood density; RCS method
earth science
paleoclimate
tree ring
tree ring standardized growth index,null,null,null,null,tree ring,composited|smoothed,null,N,30 year spline
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,null,degree Celsius,Apr-Sep,climate reconstructions|tree ring,filtered,null,N,based on latewood density; non-RCS 30-yr filtered
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,one standard error lower bound,degree Celsius,Apr-Sep,climate reconstructions|tree ring,null,null,N,based on latewood density; non-RCS method; Spline 30 year
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,one standard error upper bound,degree Celsius,Apr-Sep,climate reconstructions|tree ring,null,null,N,based on latewood density; non-RCS method; Spline 30 year
earth science
paleoclimate
tree ring
tree ring standardized growth index,null,null,null,null,tree ring,composited,null,N,null
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,one standard error upper bound,degree Celsius,Apr-Sep,climate reconstructions|tree ring,null,null,N,based on latewood density; RCS method; Spline 30 yr
earth science
paleoclimate
tree ring
age,null,null,year Common Era,null,tree ring,null,null,N,null
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,one standard error lower bound,degree Celsius,Apr-Sep,climate reconstructions|tree ring,null,null,N,based on latewood density; RCS method; Spline 30 yr
earth science
paleoclimate
climate reconstructions|tree ring
surface temperature,ring density,null,degree Celsius,Apr-Sep,climate reconstructions|tree ring,null,null,N,based on latewood density; non-RCS method
earth science
paleoclimate
reconstructions
air temperature
geoscientificInformation
Air Temperature Reconstruction
1107 AD
2007 AD
843 cal yr BP
-57 cal yr BP
Complete
62.21
62.31
13.15
13.6
670
670
Continent
Europe
Northern Europe
Scandanavia
Sweden
Jämtland>LATITUDE >LONGITUDE
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
Björn E. Gunnarson, Hans W. Linderholm, and Anders Moberg. 2011. Improving a tree-ring reconstruction from west-central Scandinavia: 900 years of warm-season temperatures.
Climate Dynamics, Vol. 36, Issues 1-2, pp. 97-108.
DOI: 10.1007/s00382-010-0783-5
Dendroclimatological sampling of Scots pine (Pinus sylvestris L.) has been made in the province of Jämtland, in the west-central Scandinavian mountains, since the 1970s. The tree-ring width (TRW) chronology spans several thousand years and has been used to reconstruct June-August temperatures back to 1632 bc. A maximum latewood density (MXD) dataset, covering the period ad 1107-1827 (with gap 1292-1315) was presented in the 1980s by Fritz Schweingruber. Here we combine these historical MXD data with recently collected MXD data covering ad 1292-2006 into a single reconstruction of April-September temperatures for the period ad 1107-2006. Regional curve standardization (RCS) provides more low-frequency variability than “non-RCS” and stronger correlation with local seasonal temperatures (51% variance explained). The MXD chronology shows a stronger relationship with temperatures than the TRW data, but the two chronologies show similar multi-decadal variations back to ad 1500. According to the MXD chronology, the period since ad 1930 and around ad 1150-1200 were the warmest during the last 900 years. Due to large uncertainties in the early part of the combined MXD chronology, it is not possible to conclude which period was the warmest. More sampling of trees growing near the tree-line is needed to further improve the MXD chronology.
STUDY NOTES: Tree ring maximum density temperature reconstruction for AD 1100-2006
based on a combination of old historical data and new data.
Dry dead wood covers the period AD 1107-1907 and living trees cover the period AD 1450-2006.
No subfossil lake material is included in the MXD data.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/europe/sweden/gunnarson2011mxd.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/europe/sweden/gunnarson2011temp.txt
USA/NOAA
DIF
Version 9.8.4
2019-03-01
2019-03-01