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Titolo:
The photochemical effects of dynamically induced variations in solar insolation
Autore:
Sonnemann, GR;
Indirizzi:
Univ Rostock, Leibniz Inst Atmospher Phys, D-18225 Kuhlungsborn, Germany Univ Rostock Kuhlungsborn Germany D-18225 D-18225 Kuhlungsborn, Germany
Titolo Testata:
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
fascicolo: 8, volume: 63, anno: 2001,
pagine: 781 - 797
SICI:
1364-6826(200105)63:8<781:TPEODI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUASI 2-DAY WAVE; MESOPAUSE REGION; NONLINEAR BEHAVIOR; SEASONAL-VARIATION; UPPER MESOSPHERE; MIDDLE ATMOSPHERE; QUASI-2-DAY WAVE; MODEL; SYSTEM; LATITUDES;
Keywords:
Doppler shift; photochemistry; zonal wind; mesopause region; mesospheric ozone; two-day wave;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Sonnemann, GR Univ Rostock, Leibniz Inst Atmospher Phys, D-18225 Kuhlungsborn, Germany Univ Rostock Kuhlungsborn Germany D-18225 ngsborn, Germany
Citazione:
G.R. Sonnemann, "The photochemical effects of dynamically induced variations in solar insolation", J ATMOS S-P, 63(8), 2001, pp. 781-797

Abstract

In this paper, the question of what happens when an air parcel in which photochemical processes take place moves around the earth with a certain velocity is considered. When the characteristic chemical system time corresponds to the rotation period of the earth (1 day) an influence of the diurnal variation of the chemical constituents on the zonal wind is found. We term this finding the zonal wind effect on the photochemistry (ZWEPC). The periodof forcing of the chemical system within the air parcel changes depending on the direction and strength of the zonal wind. The alteration of the respective frequency has been described by a modified Doppler formula. A remarkable influence of the zonal wind on the photochemistry was found in the upper mesosphere:mesopause region where the characteristic chemical system time ranges in the order of one day and the system represents a nonlinear chemical oscillator which is able to create nonlinear effects such as subharmonics. The zonal wind influences such magnitudes as the occurring time of thedaytime ozone maximum or the diurnal amplitude of atomic hydrogen and others. As the zonal wind changes with season the ZWEPC has to be taken into consideration when interpreting observations. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 07:39:07