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This data has achieved Bronze level on 22 October 2015 which means this data makes a great start at the basics of publishing open data.
Climate Prediction Center (CPC) Northern and Southern Hemisphere Blocking Index
Summary
- Type of release
- ongoing release of a series of related datasets
- Data Licence
- Not Applicable
- Content Licence
- Creative Commons CCZero
- Verification
- automatically awarded
- Release Date
- 27 September 2015
- Modified Date
- 27 September 2015
- Update Frequency
- daily
- Publishers
- National Oceanic and Atmospheric Administration, Department of Commerce
- Identifier
- climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index
- Landing Page
- http://catalog.data.gov/dataset/climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index
- Temporal Coverage
- 1 January 2004 — 25 August 2014
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Description
Atmospheric blocking is commonly referred to as the situation when the normal zonal flow is interrupted by strong and persistent meridional flow. The normal eastward progression of synoptic disturbances is obstructed leading to episodes of prolonged extreme weather conditions. On intraseasonal time scales the persistent weather extremes can last from several days up to a few weeks, often accompanied by significant temperature and precipitation anomalies. Numerous definitions of blocking exist in the literature and all involve a level if subjectivity. We use the blocking index of Tibaldi and Molteni (1990) modified from that of Lejenas and Okland (1983). This product displays the daily observed blocking index for the past 3 months up to and including the present day. Additionally, outlookss of the blocking index and the 500 hPa geopotential height field anomalies are generated form the NCEP Global Forecast System (GFS) model. The outlooks mare displayed for days 1-9 for both the northern and southern Hemispheres. The product is not archived so a historical time series is not available. To produce a time series it is recommended that the methodology of Tibaldi and Molteni (1990) be applied using the reanalysis dataset of choice. Blocking frequency over the 1950-2000 time period and composites as a function of ENSO phase are also provided.
General Information
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This data is described at
http://catalog.data.gov/dataset/climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index Do you think this data is incorrect? Let us know
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This data is published by
National Oceanic and Atmospheric Administration, Department of Commerce Do you think this data is incorrect? Let us know
Legal Information
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The rights statement is at
http://catalog.data.gov/dataset/climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index Do you think this data is incorrect? Let us know
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Outside the US, this data is available under
Creative Commons CCZero Do you think this data is incorrect? Let us know
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There are
yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know
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The content is available under
Creative Commons CCZero Do you think this data is incorrect? Let us know
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This data contains
no data about individuals Do you think this data is incorrect? Let us know
Practical Information
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The data appears in this collection
http://catalog.data.gov/organization/noaa-gov Do you think this data is incorrect? Let us know
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This data changes
at least daily Do you think this data is incorrect? Let us know
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The data is
backed up offsite Do you think this data is incorrect? Let us know
Technical Information
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Releases of this data are listed at
http://catalog.data.gov/api/rest/package/climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index Do you think this data is incorrect? Let us know
Social Information
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Find out how to contact someone about this data at
http://catalog.data.gov/dataset/climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index Do you think this data is incorrect? Let us know
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Find out how to suggest improvements to publication at
http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/climate-prediction-center-cpc-northern-and-southern-hemisphere-blocking-index Do you think this data is incorrect? Let us know