Article Type:
Research Article

On the Existence of Extended Range Predictability

Edward N. Lorenz Dept. of Meteorology, Massachusetts Institute of Technology, Cambridge, Mass. 02139

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Print Publication:
01 Apr 1973
DOI:
https://doi.org/10.1175/1520-0450(1973)012<0543:OTEOER>2.0.CO;2
Page(s):
543–546
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Abstract

On the basis of five years of Northern Hemisphere isobaric height data, states of the atmosphere separated by 12 days or less are found on the average to resemble each other more closely than randomly selected states, even after adjustment for seasonal trend has been made. The existence of partial predictability of instantaneous weather patterns at least 12 days in advance is thereby confirmed.

Abstract

On the basis of five years of Northern Hemisphere isobaric height data, states of the atmosphere separated by 12 days or less are found on the average to resemble each other more closely than randomly selected states, even after adjustment for seasonal trend has been made. The existence of partial predictability of instantaneous weather patterns at least 12 days in advance is thereby confirmed.

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Cover Journal of Applied Meteorology and Climatology
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