Identifying sudden changes in data

This note describes a method for locating sudden changes in mean data values. Positions of sudden changes are boundaries of variable-width blocks of data. These boundaries could correspond to synoptic frontal boundaries, the downstream edge of a wind gust, or generally, any anomalous change in a loc...

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Bibliographic Details
Published in:Monthly weather review 1995-04, Vol.123 (4), p.1207-1212
Main Author: HOWELL, J. F
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Geophysics. Techniques, methods, instrumentation and models
Online Access:Get full text
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Summary:This note describes a method for locating sudden changes in mean data values. Positions of sudden changes are boundaries of variable-width blocks of data. These boundaries could correspond to synoptic frontal boundaries, the downstream edge of a wind gust, or generally, any anomalous change in a locally averaged quantity. The algorithm described here is applied to artificial signals, century-long records of precipitation, and atmospheric turbulence data.
ISSN:0027-0644
1520-0493
DOI:10.1175/1520-0493(1995)123<1207:ISCID>2.0.CO;2