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Effective Atmospheric Angular Momentum (EAAM) Data from the UK Meteorological Office and the European Centre for Medium-Range Weather Forecasts

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Abstract: This Atmospheric Angular Momentum data set is stored at the British
Atmospheric Data Center (BADC). The data originated at the UK
Meteorological Office (UKMO) and the European Centre for Medium-Range
Weather Forecasts (ECMWF). All data are in ASCII format and may be
accessed by the World Wide Web or by anonymous FTP. Each data set file
contains 3 angular momentum components at 12 or 24-hourly
intervals. The temporal coverage begins in 1979.

Link to the AAM data set home page at BADC to obtain data set
documentation and to download the data.
Related URL
Description: International Earth Rotation Service (IERS) Central Bureau (IERS/CB).
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Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: UK Meteorogical Office and European Centre for Medium Range Weather Forecasts
Dataset Title: Effective Atmospheric Angular Momentum (EAAM) data
Dataset Release Place: Oxfordshire, United Kingdom
Dataset Publisher: British Atmospheric Data Centre
Online Resource:
Temporal Coverage
Start Date: 1979-01-01
Data Resolution
Temporal Resolution: 24 hours
Data Set Progress
Data Center
British Atmospheric Data Centre, NERC Centres for Atmospheric Science, United Kingdom Supplemental Info
Data Center URL:
Dataset ID: Effective Atmospheric Angular Momentum (EAAM) Data

Data Center Personnel
Phone: +44 1235 446432
Fax: +44 1235 445848
Email: BADC at
Contact Address:
British Atmospheric Data Centre
Space Science Department
Rutherford Appleton Laboratory
City: Chilton
Province or State: Didcot
Postal Code: OX11 OQX
Country: UK
Distribution Media: Online Internet (HTTP)
Distribution Format: ASCII
Fees: None
Phone: 301-614-5126
Fax: 301-614-5268
Email: Scott.A.Ritz at
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: Maryland
Postal Code: 20771
Country: USA
Anderson, J.R., and Rosen, R.D., 1983: Latitude-height structure of 40
- 50 day variations in atmospheric angular momentum. J. Atmos. Sci., 40,

Barnes, R.T.H., R. Hide, A.A. White, and C.A. Wilson, 1983:
Atmospheric angular momentum fluctuations, length-of-day changes and
polar motion. Proc. Roy. Soc. London, Ser. ... View entire text
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2016-01-27

Link to Web Site