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Title: Multiple taper study of the structure of interannual ozone variations

Abstract

Interannual fluctuations of total column atmospheric ozone are studied at a number of sites using multiple taper signal processing methods. Much of the energy in the ozone variations is organized in a systematic fashion. Spectral energy of the ozone signal is concentrated in a suite of broadband peaks, centered on the harmonics and subharmonics of the annual cycle. The signals represented by these peaks are coherent with each other, and with the energy in corresponding peaks at other recording stations. Also, an estimate of the coherence between total column ozone and Kp, the global planetary magnetic index summarizing solar particle radiation, shows a strong coherence (MSC > 0.7) between Kp and total column ozone at 2 cycles/year. The probability of two random independent gaussian-distributed series producing this level of coherence is significantly less than 0.05%. Other bands also show strong coherence, but less spectacular levels. The origin of this peculiar structure is a mystery. However, some clues may be provided by a controversial hypothesis of Thorne [1977], Baker et al [1987] and Callis et al [1988] calling for the generation of nitrous oxides in the high-latitude lower stratosphere by processes associated with solar wind activity. This hypothesis may have beenmore » bolstered by observational evidence. The significance of this controversial conjecture is that it may provide a mechanism whereby changes in the solar wind affect the altitude at which wavelength radiation is absorbed, coupling the solar wind to processes lower in the atmosphere than currently thought.« less

Authors:
Publication Date:
OSTI Identifier:
549163
Report Number(s):
CONF-950264-
TRN: 95:006094-0032
Resource Type:
Conference
Resource Relation:
Conference: American Association for the Advancement of Science (AAAS) annual meeting and science innovation exposition, Atlanta, GA (United States), 16-21 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of 1995 AAAS annual meeting and science innovation exposition: Unity in diversity; Strauss, M.S. [ed.]; Heasley, C.; PB: 337 p.
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; OZONE; ANNUAL VARIATIONS; ALTITUDE; OXIDES; PROBABILITY; SOLAR WIND; STRATOSPHERE; AIR POLLUTION

Citation Formats

Lindberg, C. Multiple taper study of the structure of interannual ozone variations. United States: N. p., 1995. Web.
Lindberg, C. Multiple taper study of the structure of interannual ozone variations. United States.
Lindberg, C. 1995. "Multiple taper study of the structure of interannual ozone variations". United States.
@article{osti_549163,
title = {Multiple taper study of the structure of interannual ozone variations},
author = {Lindberg, C},
abstractNote = {Interannual fluctuations of total column atmospheric ozone are studied at a number of sites using multiple taper signal processing methods. Much of the energy in the ozone variations is organized in a systematic fashion. Spectral energy of the ozone signal is concentrated in a suite of broadband peaks, centered on the harmonics and subharmonics of the annual cycle. The signals represented by these peaks are coherent with each other, and with the energy in corresponding peaks at other recording stations. Also, an estimate of the coherence between total column ozone and Kp, the global planetary magnetic index summarizing solar particle radiation, shows a strong coherence (MSC > 0.7) between Kp and total column ozone at 2 cycles/year. The probability of two random independent gaussian-distributed series producing this level of coherence is significantly less than 0.05%. Other bands also show strong coherence, but less spectacular levels. The origin of this peculiar structure is a mystery. However, some clues may be provided by a controversial hypothesis of Thorne [1977], Baker et al [1987] and Callis et al [1988] calling for the generation of nitrous oxides in the high-latitude lower stratosphere by processes associated with solar wind activity. This hypothesis may have been bolstered by observational evidence. The significance of this controversial conjecture is that it may provide a mechanism whereby changes in the solar wind affect the altitude at which wavelength radiation is absorbed, coupling the solar wind to processes lower in the atmosphere than currently thought.},
doi = {},
url = {https://www.osti.gov/biblio/549163}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
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