Arctic Oscillation (AO) Index Data

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: David W. J. Thompson, John. M. Wallace,
Publication_Date: Unknown
Title: Arctic Oscillation (AO) Index Data
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Seattle, Washington, USA
Publisher: University of Washington Department of Atmospheric Sciences
Other_Citation_Details:
Online_Linkage:
Description:
Abstract:
The University of Washington Joint Institute for the Study of the Atmosphere and Ocean (JISAO) offers an Arctic Oscillation (AO) Index dataset. The Arctic Oscillation (AO) is defined as the leading EOF of Northern Hemisphere sea-level pressure anomalies poleward of 20N, weighted by area (Thompson and Wallace, 1998). The following indices are generated by projecting various anomaly fields onto the structure of the &AO&, defined here as the leading EOF of SLP poleward of 20N based on all months January 1958 to April 1997. All units are arbitrary. &http://ao.atmos.colostate.edu//Data/AO_TREN_NCEP_Jan1899Current.ascii& AO_TREN_NCEP_Jan1899Current.ascii MONTHLY INDEX January 1899 to present. Found by projecting the AO pattern onto SLP anomalies back to Jan 1899. Index starts Jan 1899, ends June 2002. Index values 1899-December 1957 are based on data described in Trenberth and Paolino (1980). Index values January 1958 to current are from the NCEP/NCAR Reanalysis. (Reference: Thompson and Wallace 2000) &http://ao.atmos.colostate.edu//Data/AO_SATindex_JFM_Jan1851March1997.ascii& AO_SATindex_JFM_Jan1851March1997.ascii MONTHLY INDEX BASED ON SAT DATA. January-March monthly-mean values from January 1851 to March 1997. The first column is the time axis in years (and fractions of years: i.e. 1958+0/3 would be Jan 1958, 1958+2/3 is March 1958, etc). The second column is the index values. In this case the index values are the expansion coefficient time series of the pattern of SAT anomalies associated with the AO. SAT data provided by P. D. Jones (Jones 1994) from the CRU. (Reference: Thompson and Wallace 2000) Additional AO Index data are available from: &http://www.atmos.colostate.edu/ao/Data/ao_index.html& and &http://jisao.washington.edu/data/aots/&
Purpose:
Not Available
Supplemental_Information:
REFERENCE: References: David W. J. Thompson and John. M. Wallace, 1998: The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophys. Res. Lett., 25, No. 9, 1297-1300.
Supplemental_Information:
REFERENCE: Thompson, D. W. J., and J. M. Wallace, 2000: Annular modes in the extratropical circulation. Part I: Month-to-month variability. J. Climate, 13, 1000-1016.
Supplemental_Information:
REFERENCE: Thompson, D. W. J., J. M. Wallace, and G. C. Hegerl, 2000: Annular modes in the extratropical circulation. Part II: Trends. J. Climate, 13, 1018-1036.
Supplemental_Information:
REFERENCE: For additional publications and links to abstracts and the above papers, see: "http://www.atmos.colostate.edu/ao/ResPapers/index.html"
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 18510101
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
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: 75.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > OSCILLATIONS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > PRESSURE ANOMALIES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE
Theme_Keyword: EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ARCTIC OSCILLATION > AO
Theme_Keyword: Arctic Oscillation
Theme_Keyword: Ao
Theme_Keyword: Northern Hemisphere Annular Mode
Theme_Keyword: Climate Index
Theme_Keyword: Climate Indices
Theme_Keyword: Climate Change
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > ARCTIC
Place_Keyword: GEOGRAPHIC REGION > NORTHERN HEMISPHERE
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Please cite the dataset originator if you use this data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: DAVID W.J. THOMPSON
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Department of Atmospheric Sciences
Address: Colorado State University
City: Fort Collins
State_or_Province: CO
Postal_Code: 80523
Country: USA
Contact_Electronic_Mail_Address: davet@atmos.colostate.edu
Back to Top
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
Back to Top
Spatial_Reference_Information:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UWA/ATMOS/JISAO > Joint Institute for the Study of the Atmosphere and Ocean, Department of Atmospheric Sciences, University of Washington
Contact_Person: TODD MITCHELL
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Electronic_Mail_Address: mitchell@atmos.washington.edu
Resource_Description: JISAO_ARCTIC_AO
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.jisao.washington.edu/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://jisao.washington.edu/data/aots/
Access_Instructions:
Access to AO Index documentation, graphs and data from 1899. Data includes monthly means and seasonal (JFM) means.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ao.atmos.colostate.edu//Data/AO_TREN_NCEP_J...
Access_Instructions:
Monthly AO Indices from January 1899 to present based on data described in Trenberth and Paolino (1980).
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ao.atmos.colostate.edu//Data/AO_SATindex_JF...
Access_Instructions:
Monthly AO Indices from January 1851 based on SAT data provided by P. D. Jones (Jones 1994) from the CRU.
Fees: None
Back to Top
Metadata_Reference_Information:
Metadata_Date: 19990727
Metadata_Review_Date: 20090413
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
Back to Top
[ Update this Record ]


Link to Web Site