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2,000-Year Northern Hemisphere Temperature Reconstruction

Federal Geographic Data Committee (FGDC) Metadata:

Identification_Information
Data_Quality_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Moberg, A., D.M. Sonechkin, K. Holmgren, N.M. Datsenko and W. Karlen

Publication_Date: February 2005

Title: 2,000-Year Northern Hemisphere Temperature Reconstruction

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-019
Issue_Identification: 2005-019

Publication_Information:

Publication_Place: Boulder, CO
Publisher: IGBP PAGES/World Data Center for Paleoclimatology

Other_Citation_Details:

NOAA/NCDC Paleoclimatology Program

Online_Linkage: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/moberg2005/nhtemp-moberg2005.txt

Description:

Abstract:: A number of reconstructions of millennial-scale climate variability have been carried out in order to understand patterns of natural climate variability, on decade to century timescales, and the role of anthropogenic forcing. These reconstructions have mainly used tree-ring data and other data sets of annual to decadal resolution. Lake and ocean sediments have a lower time resolution, but provide climate information at multicentennial timescales that may not be captured by tree-ring data. Here we reconstruct Northern Hemisphere temperatures for the past 2,000 years by combining low-resolution proxies with tree-ring data, using a wavelet transform technique to achieve timescale-dependent processing of the data. Our reconstruction shows larger multicentennial variability than most previous multi-proxy reconstructions, but agrees well with temperatures reconstructed from borehole measurements and with temperatures obtained with a general circulation model. According to our reconstruction, high temperatures - similar to those observed in the twentieth century before 1990- occurred around AD 1000 to 1100, and minimum temperatures that are about 0.7K below the average of 1961-90 occurred around AD 1600. This large natural variability in the past suggests an important role of natural multicentennial variability that is likely to continue. This data set consists of reconstructed Northern Hemisphere temperatures for the past 2,000 years calculated by combining low-resolution proxies with tree-ring data, using a wavelet transform technique to achieve timescale-dependent processing of the data. All data are given as temperature anomalies (K) from the Northern Hemisphere annual mean temperature 1961-90 average. Lack of data are indicated with -9.9999
Purpose:: Not Available
Supplemental_Information:: REFERENCE: Moberg, A., D.M. Sonechkin, K. Holmgren, N.M. Datsenko and W. Karlen. 2005. Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data. Nature, Vol. 433, No. 7026, pp. 613-617, 10 February 2005.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 00010101
Ending_Date: 19791231

Currentness_Reference:Unknown

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: 0.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > TEMPERATURE ANOMALIES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > LAND RECORDS > TREE RINGS
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > STRATIGRAPHIC SEQUENCE
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > PALEOCLIMATE RECONSTRUCTIONS > AIR TEMPERATURE RECONSTRUCTION
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > LAND RECORDS > BOREHOLES
Theme_Keyword: EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > BOREHOLES
Theme_Keyword: PAGES > PAST GLOBAL CHANGES, IGBP
Theme_Keyword: Temperature Reconstruction
Theme_Keyword: Climate Variability
Theme_Keyword: Multicentennial Variability
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: OCEANS
Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > NORTHERN HEMISPHERE

Temporal:

Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Decadal

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: ANDERS MOBERG

Contact_Person_Primary:

Contact_Person: DIMITY M. SONECHKIN

Contact_Person_Primary:

Contact_Person: KARIN HOLMGREN

Contact_Person_Primary:

Contact_Person: NINA M. DATENSKO

Contact_Person_Primary:

Contact_Person: WIBJORN KARLEN

Contact_Position: INVESTIGATOR

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Department of Meteorology
Address: Stockholm University
City: Stockholm
Postal_Code: SE-106 91
Country: Sweden

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Dynamical-Stochastical Laboratory
Address: Hydrometeorological Research Centre of Russia
Address: Bolshoy Predtechensky Lane 11/13
City: Moscow
Postal_Code: 123 242
Country: Russia

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Department of Physical Geography and Quaternary Geology
Address: Stockholm University
City: Stockholm
Postal_Code: SE-106 91
Country: Sweden

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Dynamical-Stochastical Laboratory
Address: Hydrometeorological Research Centre of Russia
Address: Bolshoy Predtechensky Lane 11/13
City: Moscow
Postal_Code: 123 242
Country: Russia

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Department of Physical Geography and Quaternary Geology
Address: Stockholm University
City: Stockholm
Postal_Code: SE-106 91
Country: Sweden

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: Not Available

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:: Not Available
Process_Date: Unknown

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: WDC/PALEOCLIMATOLOGY, BOULDER > World Data Center for Paleoclimatology, Boulder
Contact_Person: WDC/PALEOCLIMATOLOGY, BOULDER

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: World Data Center for Paleoclimatology
Address: NOAA/NCDC Code E/GCx3
Address: 325 Broadway
City: Boulder
State_or_Province: CO
Postal_Code: 80303
Country: USA

Contact_Voice_Telephone: +1 (303) 497-6160

Contact_Facsimile_Telephone: +1 (303) 497-6513

Contact_Electronic_Mail_Address: paleo@noaa.gov

Resource_Description: NOAA_NCDC_PALEO_2005-019

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ascii

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://www.ncdc.noaa.gov/paleo/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributio...

Access_Instructions:

Access to data and documentation

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://www.ncdc.noaa.gov/paleo/pubs/moberg2005/mob...

Access_Instructions:

Documentation on Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20050307

Metadata_Review_Date: 20060829

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA

Contact_Voice_Telephone: Not Available

Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

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