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Global Change Master Directory (GCMD)
Northern Hemisphere and Regional Temperature Reconstructions
Entry ID: NOAA_NGDC_PALEO_TREERINGDENSITY


Summary
Abstract: This data set consists of new reconstructions of northern
extratropical summer temperatures for nine subcontinental-scale
regions and a composite series representing quasi "Northern
Hemisphere" temperature change over the last 600 years. These series
are based on tree ring density data that have been processed using a
novel statistical technique (age band decomposition) designed to
preserve greater long-timescale variability than in previous analyses.

Reconstructions of Northern Hemisphere and Regional April-September
temperature are based on 387 tree ring density chronologies. Regions
are as follows:

NEUR Northern Europe
SEUR Southern Europe
NSIB Northern Siberia
ESIB Eastern Siberia
CAS Central Asia
TIBP Tibetan Plateau
WNA Western North America
NWNA Northwestern North America
ECCA Eastern and Central Canada

ABSTRACT (from the online documentation):
We describe new reconstructions of northern extratropical summer temperatures
for nine subcontinental-scale regions and a composite series representing quasi
"Northern Hemisphere" temperature change over the last 600 years. These series
are based on tree ring density data that have been processed using a novel
statistical technique (age band decomposition) designed to preserve greater
long-timescale variability than in previous analyses. We provide time-dependent
and timescale-dependent uncertainty estimates for all of the reconstructions.
The new regional estimates are generally cooler in almost all precalibration
periods, compared to estimates obtained using earlier processing methods,
particularly during the 17th century. One exception is the reconstruction
for northern Siberia, where 15th century summers are now estimated to be
warmer than those observed in the 20th century. In producing a new Northern
Hemisphere series we demonstrate the sensitivity of the results to the
methodology used once the number of regions with data, and the reliability
of each regional series, begins to decrease. We compare our new hemisphere
series to other published large-regional temperature histories,
most of which lie within the 1s confidence band of our estimates over
most of the last 600 years. The 20th century is clearly shown by all of
the palaeoseries composites to be the warmest during this period.

Related URL
Link: VIEW RELATED INFORMATION
Description: Access to data and documentation

Geographic Coverage
 N: 90.0 S: 20.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Creator: Keith R. Briffa, Philip D. Jones, Fritz H. Schweingruber, Timothy J. Osborn, I.C. Harris, S.G. Shiyatov, and E.A. Vaganov
Dataset Title: Northern Hemisphere and Regional Temperature Reconstructions
Dataset Release Date: 2002
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: Data Contribution Series #2002-015
Online Resource: http://www.ncdc.noaa.gov/paleo/pubs/briffa2001/briffa2001.html


Temporal Coverage
Start Date: 1000-01-01
Stop Date: 1997-12-31


Paleo_Temporal_Coverage
Paleo Start Date: 1000 ybp
Paleo Stop Date: 0 ybp
Chrono Unit:


Location Keywords
GEOGRAPHIC REGION > NORTHERN HEMISPHERE


Data Resolution
Temporal Resolution: seasonal


Science Keywords
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE >TEMPERATURE ANOMALIES    [Definition]
BIOSPHERE >VEGETATION >TREE RINGS    [Definition]
PALEOCLIMATE >LAND RECORDS >TREE RINGS    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >AIR TEMPERATURE RECONSTRUCTION    [Definition]


ISO Topic Category
BIOTA
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION


Platform
GROUND-BASED OBSERVATIONS    [Information]


Project
IGBP >International Geosphere-Biosphere Programme    [Information]
PAGES >Past Global Changes, IGBP    [Information]


Quality
See:
Briffa, K.R., T.J. Osborn, F.H. Schweingruber, I.C. Harris,
P.D. Jones, S.G. Shiyatov, and E.A. Vaganov, 2001, Low-frequency
temperature variations from a northern tree ring density network,
Journal of Geophysical Research, 106 D3 (16-Feb-2001) 2929-2941.


Access Constraints
None


Use Constraints
Cite the original reference when using this data:
Briffa, K.R., T.J. Osborn, F.H. Schweingruber, I.C. Harris,
P.D. Jones, S.G. Shiyatov, and E.A. Vaganov, 2001, Low-frequency
temperature variations from a northern tree ring density network,
Journal of Geophysical Research, 106 D3 (16-Feb-2001) 2929-2941.


Keywords
temperature reconstructions
climate variability
climate change
tree ring


Data Set Progress
COMPLETE


Originating Center
NOAA/NGDC


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA



Distribution
Distribution_Media: online ftp, www
Fees: none


Personnel
KEITH R. BRIFFA
Role: INVESTIGATOR
Email: K.Briffa at uea.ac.uk
Contact Address:
Climatic Research Unit
School of Environmental Sciences
University of East Anglia
Norwich NR4 7TJ
Country: UNITED KINGDOM


Publications/References
Briffa, K.R., T.J. Osborn, F.H. Schweingruber, I.C. Harris,
P.D. Jones, S.G. Shiyatov, and E.A. Vaganov, 2001, Low-frequency
temperature variations from a northern tree ring density network,
Journal of Geophysical Research, 106 D3 (16-Feb-2001) 2929-2941.
Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2002-04-09
Last DIF Revision Date: 2017-08-24



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