A three-dimensional dynamic model of the minor constituents of the mesosphere

Sonnemann, G. R.; Kremp, Ch.; Ebel, A.; Berger, Uwe

doi:10.1016/s1352-2310(98)00113-7

Cited by 49 publications

(40 citation statements)

References 93 publications

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“…The simulations of WACCM used here for the tidal analysis show a phase shift that starts already at 60 km. Other models, like COMMA-IAP -Cologne Model of the Middle Atmosphere -Institute of Atmospheric Physics in Kühlungsborn, Sonnemann et al (1998), do not show any phase shift at all (Körner, 2002;Körner and Sonnemann, 2001). In comparison to the HALOE analysis of the mesospheric SAO in water vapour (Jackson et al, 1998, their Fig.…”

Section: Discussion and Summarymentioning

confidence: 99%

Observations of the mesospheric semi-annual oscillation (MSAO) in water vapour by Odin/SMR

et al. 2008

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Abstract. Mesospheric water vapour measurements taken by the SMR instrument aboard the Odin satellite between 2002 and 2006 have been analysed with focus on the mesospheric semi-annual circulation in the tropical and subtropical region. This analysis provides the first complete picture of mesospheric SAO in water vapour, covering altitudes above 80 km where previous studies were limited. Our analysis shows a clear semi-annual variation in the water vapour distribution in the entire altitude range between 65 km and 100 km in the equatorial area. Maxima occur near the equinoxes below 75 km and around the solstices above 80 km. The phase reversal occurs in the small layer inbetween, consistent with the downward propagation of the mesospheric SAO in the zonal wind in this altitude range. The SAO amplitude exhibits a double peak structure in the equatorial region, with maxima at about 75 km and 81 km. The observed amplitudes show higher values than an earlier analysis based on UARS/HALOE data. The upper peak amplitude remains relatively constant with latitude. The lower peak amplitude decreases towards higher latitudes, but recovers in the Southern Hemisphere subtropics. On the other hand, the annual variation is much more prominent in the Northern Hemisphere subtropics. Furthermore, higher volume mixing ratios during summer and lower values during winter are observed in the Northern Hemisphere subtropics, as compared to the corresponding latitude range in the Southern Hemisphere.

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Section: Discussion and Summarymentioning

confidence: 99%

Observations of the mesospheric semi-annual oscillation (MSAO) in water vapour by Odin/SMR

et al. 2008

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“…3 of the current work we assess maximum error of retrieval of water vapour concentration as a result of this approximation. Besides, in our earlier work (Kulikov et al, 2006) where we used the COMMA-IAP model (Sonnemann et al, 1998) that includes a complete set of constituents and reactions of the mesospheric photochemical system we also demonstrated that the reactions in Table 1 determine well (to an accuracy not worse than 1-3%) daytime concentrations of fast constituents of the families of O x and HO x .…”

Section: Mpcs and The Used Models General Description Of The Methods mentioning

confidence: 54%

“…First, to verify correctness of the algebraic Eqs. (3)- (7) under real conditions we calculated the COMMA-IAP model (Sonnemann et al, 1998). This model describes the range of heights from 30 to 150 km and contains all reactions that are usually included in a complete MPCS.…”

Section: Mpcs and The Used Models General Description Of The Methods mentioning

confidence: 99%

Retrieval of water vapor profile in the mesosphere from satellite ozone and hydroxyl measurements by the basic dynamic model of mesospheric photochemical system

2009

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Abstract. We propose an indirect method for retrieving a number of significant minor gas constituents of the atmosphere. The technique is based on the use of so-called basic dynamic models of atmospheric photochemical systems simplified mathematically correctly in a special manner. It is applied to a mesospheric system describing day evolution of key minor gas constituents at these heights. We take as initial data experimental data of the CRISTA-MAHRSI satellite campaign of August 1997 during which ozone and hydroxyl (O 3 and OH) concentrations were measured simultaneously. It is demonstrated that the use of the basic dynamic model allows retrieval of vertical distribution (within the 53-85 km range of heights) of water vapor concentration that is one of the control parameters of the mesospheric photochemistry.

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“…The chemical code including the chemical reaction rates are taken from our 3-D models (e.g. Sonnemann et al, 1998Sonnemann et al, , 2008Hartogh et al, 2004). The ClO x -mixing ratio was taken as constant for each model run but the partitioning between the share of Cl and ClO was variable depending on the odd oxygen chemistry.…”

Section: A Simplified Chemical Model Of the Ozone Dissociation Rate-omentioning

confidence: 99%

Upper stratospheric ozone decrease events due to a positive feedback between ozone and the ozone dissociation rate

Sonnemann

Hartogh

2009

Nonlin. Processes Geophys.

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Abstract. Ozone measurements taken with a ground based microwave instrument at Lindau (51.66 • N, 10.13 • E) over some years showed strong ozone decrease events within the stratopause region, particularly during the winter half-year. These events are characterized by a marked drop of the ozone mixing ratio from two to three ppmv to less than half a ppmv in extreme cases. Simultaneous water vapor measurements at the same place, also carried out by a microwave instrument, showed a strong increase of its mixing ratio and the temperature was also enhanced during these episodes. The theoretical analysis brought evidence that these events result from a positive feedback in the complex radiatively-chemical system between the ozone column density and the ozone dissociation rate.

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A three-dimensional dynamic model of the minor constituents of the mesosphere

Cited by 49 publications

References 93 publications

Observations of the mesospheric semi-annual oscillation (MSAO) in water vapour by Odin/SMR

Observations of the mesospheric semi-annual oscillation (MSAO) in water vapour by Odin/SMR

Retrieval of water vapor profile in the mesosphere from satellite ozone and hydroxyl measurements by the basic dynamic model of mesospheric photochemical system

Upper stratospheric ozone decrease events due to a positive feedback between ozone and the ozone dissociation rate

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