Blocking Index

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: Tibaldi, S., and F. Molteni

Publication_Date: ongoing

Title: Blocking Index

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name: NOAA/NWS/CPC Indices and Forecasts

Issue_Identification:

Publication_Information:

Publication_Place: Camp Springs, MD

Publisher: NOAA National Weather Service, Center for Climate Prediction

Other_Citation_Details:

Online_Linkage: http://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/block.shtml

Description:

Abstract:

[Source: NOAA Climate Prediction Center, http://www.cpc.ncep.noaa.gov/ ] The blocking index of Tibaldi and Molteni (1990) was modified from that of Lejenas and Okland (1983). The index is local and instantaneous, ideally suited for real-time atmospheric monitoring, isolating regions of easterly flow at 500 hPa associated with high-latitude blocks. This dataset uses the blocking index calculation for the northern hemisphere, however the index can be easily modified to examine blocking in the southern hemisphere. Blocking in the southern hemisphere typically occurs at lower latitudes when compared with the northern hemisphere. The index follows Tibaldi et al. (1994).

Purpose:

Not Available

Supplemental_Information:

REFERENCE: Lejenas, H., and H. Okland 1983 Characteristics of Northern Hemisphere blocking as determined from a long time series of observational data Tellus 35A 350-362

Supplemental_Information:

REFERENCE: Tibaldi, S., and F. Molten 1990 On the operational predictability of blocking Tellus 42A 343-365

Supplemental_Information:

REFERENCE: Tibaldi, S., E. Tosi, A. Navarra, and L. Pedulli 1994 Northern and Southern Hemisphere seasonal variability of blocking frequency and predictability Monthly Weather Review 122 1971-2003

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20020101

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: 0.0

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0

East_Bounding_Coordinate: 180.0

North_Bounding_Coordinate: -0.0

South_Bounding_Coordinate: -90.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword_Thesaurus: DATA SET LANGUAGE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > OSCILLATIONS > BLOCKING INDEX

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > PRESSURE ANOMALIES

Theme_Keyword: EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > BLOCKING INDEX

Theme_Keyword: Blocking Index

Theme_Keyword: Climate Index

Theme_Keyword: Climate Indices

Theme_Keyword: Forecast Indices

Theme_Keyword: Atmospheric Circulation

Theme_Keyword: Atmospheric Blocking

Theme_Keyword: Climate Change

Theme_Keyword: Geopotential Gradient Height

Theme_Keyword: Ghgs

Theme_Keyword: Blocking Strength

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: GEOGRAPHIC REGION > NORTHERN HEMISPHERE

Place_Keyword: GEOGRAPHIC REGION > SOUTHERN HEMISPHERE

Temporal:

Temporal_Keyword_Thesaurus: GCMD

Temporal_Keyword: Daily

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: ED O'LENIC

Contact_Position: TECHNICAL CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Electronic_Mail_Address: Ed.Olenic@noaa.gov

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: DOC/NOAA/NWS/NCEP/CPC > Climate Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce

Contact_Person: ED O'LENIC

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Electronic_Mail_Address: Ed.Olenic@noaa.gov

Resource_Description: Blocking Index

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.cpc.ncep.noaa.gov/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www.cpc.ncep.noaa.gov/products/precip/CWlin...

Access_Instructions:

Access to blocking index data, documentation, and graphs.

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20030211

Metadata_Review_Date: 20110406

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: SCOTT A. RITZ

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: NASA Goddard Space Flight Center

Address: Global Change Master Directory

City: Greenbelt

State_or_Province: Maryland

Postal_Code: 20771

Country: USA

Contact_Voice_Telephone: 301-614-5126

Contact_Facsimile_Telephone: 301-614-5268

Contact_Electronic_Mail_Address: Scott.A.Ritz@nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time