Observation of the diurnal variation of atmospheric ozone

Lean, J.

doi:10.1029/jc087ic07p04973

Cited by 29 publications

(19 citation statements)

References 29 publications

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“…Examples are at 0.46 hPa in Figures 7a and 7b, with distinct local maxima (sometimes secondary) near 1400 local time at 40°N, and at 35°N latitude in Figure 8a. As discussed in more detail in section 3.2.3, the results of Lean [1982], based on rocket‐borne photometer data, of Haefele et al [2008], based on ground‐based radiometers, and of Ricaud et al [1996], based on MLS UARS data, all corroborate the existence of these local maxima. They are also consistent with the results of Marsh et al [2002], based on HRDI measurements on UARS, albeit at higher altitudes.…”

Section: Results and Comparisonsmentioning

confidence: 54%

“…Ground‐based radiometers provide ozone measurements with the best local time resolution [e.g., Haefele et al , 2008; Connor et al , 1994; Zommerfelds et al , 1989; Ricaud et al , 1994], while rocket‐borne photometers can also provide measurements at several local times over a day [ Lean , 1982]. Although the vertical resolution of ground‐based measurements can be relatively coarse, the researchers cited above have discussed and accounted for this issue in the retrieval process.…”

Section: Introductionmentioning

confidence: 99%

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Ozone diurnal variations in the stratosphere and lower mesosphere, based on measurements from SABER on TIMED

et al. 2010

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[1] We report on derived results of global zonal mean ozone diurnal variations over 24 h of local solar time, based on satellite measurements from SABER on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite, with focus on the stratosphere and lower mesosphere. On a global scale, results in this altitude range are new. We had previously reported on ozone diurnal variations, but the focus was at higher altitudes, where the variations can be relatively large. In the stratosphere, there can be systematic diurnal variations on the order of a few percent, with multiple local maxima over a day, and these can exist down to altitudes of ∼31 hPa (∼24 km) and lower. At these altitudes, photochemistry is expected to be less effective, and dynamics (e.g., tides) can be more important. The diurnal variations also depend on latitude and season. As a function of altitude, for low latitudes at least, the ozone diurnal variations show a pattern of local-time phase progression such that beginning at ∼31 hPa the mixing ratios are smaller in the afternoon (compared to values at midnight), then (as the altitude increases) become mostly larger in the afternoon beginning from ∼10 to 4.6 hPa, revert back to intermediate afternoon values near 2.2, 1.5 hPa, and again return to lower daytime values at about 1 hPa, with this last trend continuing to higher altitudes in the mesosphere.

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Section: Results and Comparisonsmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Ozone diurnal variations in the stratosphere and lower mesosphere, based on measurements from SABER on TIMED

et al. 2010

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“…Despite the good coincidence of results of ground based and orbital measurements, it is neces sary to notice that, in the photochemical region (height levels of 50 and 60 km), the satellite device did not register a diurnal change in ozone content, which should exist according to the photochemical model of an ozone layer [1]. It is necessary to emphasize that a growth in quantity of ozone in the upper stratosphere after sunset has been found earlier in numerous exper imental works [4][5][6][7][8][9][10][11][12]. Apparently, the absence of diurnal variations of ozone according to the MLS device is connected with one feature of the limb method of measurements often used in satellite mea surements in which horizontal resolution is several hundreds of kilometers, which is much worse than that of the ground based device.…”

Section: Results Of Observationmentioning

confidence: 83%

“…The first and not very numerous experimental data about a diurnal ozone variation at heights above 50 km have been received by rocket measurements [5,6]. The appreciable increase in ozone quantity at night above 50 km, reaching in the mesosphere more twofold, has been registered.…”

Section: Introductionmentioning

confidence: 99%

Microwave ground-based measurements of ozone diurnal variations in the upper stratosphere over Kirgizia

Рыскин

Orozobakov²

2015

Izv. Atmos. Ocean. Phys.

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Results of ground based microwave measurements of diurnal variations of the ozone content in the stratosphere and mesosphere over Central Asia are given. The increase in ozone concentration at night at a height level of 50 km on 30-40% and at a height level of 60 km on 50-80% in comparison with day values is observed. At heights below 50 km, diurnal variations of ozone are not revealed within the measuring error. It is shown that interdaily changes of the night ozone content in the upper stratosphere and in the lower meso sphere take place. A comparison of the results of ground based microwave sounding with the data of the MLS AURA orbital tool is given.

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“…The a priori profile used in the retrieval method for Lauder observations is the combination of satellite climatology below 0.1 mbar and rocket measurements above [Lean, 1982]. The error covariance of the a priori was set to be as large as 40% or 0.8 parts per million by volume (ppmv), whichever was greater, so the retrievals would have little dependence on the a priori profile.…”

Section: Introductionmentioning

confidence: 99%

NDSC millimeter wave ozone observations at Lauder, New Zealand, 1992–1998: Improved methodology, validation, and variation study

Tsou¹,

Connor²,

Parrish³

et al. 2000

J. Geophys. Res.

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Abstract. A ground-based millimeter wave radiometer for the Network for the Detection of Stratospheric Change (NDSC) was installed at Lauder, New Zealand (45øS, 169.7øE) in November 1992. It has been monitoring the middle atmospheric ozone with nearly continuous operation since then. Owing to special complications in the observing conditions at this southern midlatitude site, three refinements to the data analysis and calibration techniques were proposed: (1) the use of a radiative model of local tropospheric climate adopted to the low surface elevation of the observing site, (2) the correction of observing angle measurements due to the settling of the foundation of the site, and (3) the improved method of radiometric temperature determination of calibration sources. All data from 1992 to 1998 were reprocessed with these modifications implemented. The retrieved ozone profiles are compared to sonde, two lidars, and satellite (Halogen Occultation Experiment (HALOE), Stratospheric Aerosol and Gas Experiment (SAGE II)) overpass measurements. The agreement is very good, with mean differences from 56 to 1 mbar of generally 2-3% for the comparisons with sonde, HALOE, and SAGE II, and generally <5% for the comparisons with lidars when large samples are considered. The root-mean-square scatter about the mean differences is mostly consistent with the expected (combined) precision. In comparisons with these correlative measurements, the millimeter wave ozone observations are found to have no seasonal bias, no comparison bias due to the a priori profiles used in millimeter wave data retrievals, and no observable instrument drift from 1992 to 1998. Better agreement is found in the comparison with sonde data if suspected vertical shifts in the sonde profiles are considered. The variations seen in the 6 year millimeter wave ozone data are shown to be mostly in line with photochemistry and dynamic transport processes in the mid austral latitudes. These processes, however, are apparently modulated somewhat by the Antarctic polar vortex circulation in winter seasons in the upper stratosphere.

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Observation of the diurnal variation of atmospheric ozone

Cited by 29 publications

References 29 publications

Ozone diurnal variations in the stratosphere and lower mesosphere, based on measurements from SABER on TIMED

Ozone diurnal variations in the stratosphere and lower mesosphere, based on measurements from SABER on TIMED

Microwave ground-based measurements of ozone diurnal variations in the upper stratosphere over Kirgizia

NDSC millimeter wave ozone observations at Lauder, New Zealand, 1992–1998: Improved methodology, validation, and variation study

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