Ozone reference models for the middle atmosphere

Keating, G. M.; Pitts, Mıchael; Young, David F.

doi:10.1016/0273-1177(90)90404-n

Cited by 65 publications

(46 citation statements)

References 92 publications

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“…Preliminary observations employing our equipment give altitude profiles of the mixing ratio and number density of 03 molecules in agreement with reference models given by Keating et al (1990) and millimeter wave observations by Parrish et al (1992) with an accuracy of -10% in the altitude range between 40 and 50 km. Discrepancies between our observations and existing model are found in altitude profiles above 50 km.…”

Section: Resultssupporting

confidence: 83%

“…8 in more detail, we can find some systematic discrepancy in the noon altitude profiles between our observations and the model by Keating et al (1990) by a factor of 1.5 above the altitude of 70 km though the discrepancy is nearly the same as the observational errors. On this problem, we have to remind that we are giving intrinsically a positive constraint on mixing ratio as an apriori knowledge and stop the iteration when the residual of observed brightness from calculated one becomes within observational error.…”

Section: Altitude Profilesupporting

confidence: 47%

“…Observational errors for the other date are also nearly the same. The altitude profile of the model of Keating et al (1990) is also plotted by filled circle for a comparison with our data. Our profiles at noon agree generally well with the model within observational errors.…”

Section: Methods Of Data Reductionmentioning

confidence: 99%

“…The SIS mixer has a receiver noise of 34 K (SSB) and the spectrometer covers >60 MHz bandwidth with a frequency resolution of 35 kHz. Altitude profiles of ozone concentration retrieved from observed line profiles are compared with those in Keating et al (1990) …”

mentioning

confidence: 99%

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Ground-Based Millimeterwave Measurements of Mesosopheric and Stratospheric Ozone Employing an SIS Mixer Receiver.

Kawabata

Ogawa

Yonekura

1994

J. geomagn. geoelec

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The J = 61 ,5 -60,6 (110.8359 GHz) line of mesospheric and stratospheric ozone has been observed by employing a newly developed microwave ozone sensor equipped with a Nb SIS mixer receiver in a temporal manner. The SIS mixer has a receiver noise of 34 K (SSB) and the spectrometer covers >60 MHz bandwidth with a frequency resolution of 35 kHz. Altitude profiles of ozone concentration retrieved from observed line profiles are compared with those in Keating et al. (1990)

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Section: Resultssupporting

confidence: 83%

Section: Altitude Profilesupporting

confidence: 47%

Section: Methods Of Data Reductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Ground-Based Millimeterwave Measurements of Mesosopheric and Stratospheric Ozone Employing an SIS Mixer Receiver.

Kawabata

Ogawa

Yonekura

1994

J. geomagn. geoelec

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“…For the line shape of the ozone emission, the Voigt symmetrical line profile was assumed. The vertical distribution of the ozone mixing ratio was used as the a priori profile, it was calculated with a cubic spline interpolation of monthly mean ozone profiles, which were constructed from (1) the ozonesonde data below 25 km at Sapporo (43.1 N, 141.3 E) in 1994-95 and (2) the ozone data, above 35 km from a climatological model at 43.5 N (Keating et al 1990). Millimeter-wave observations have been carried out since November 1999.…”

Section: Instrument Description Observationmentioning

confidence: 99%

Ground-Based Millimeter-Wave Radiometer for Measuring the Stratospheric Ozone over Rikubetsu, Japan

Nagahama

Nakane

Fujinuma

et al. 2007

Journal of the Meteorological Society of Japan

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A millimeter-wave radiometer was installed at Rikubetsu, Japan (43.5 N, 143.8 E) in March 1999, to monitor the vertical distribution of ozone and temporal ozone variations in the stratosphere. Since November 1999, we have been monitoring vertical profiles of the ozone mixing ratio in the altitude range from 22 to 60 km, with measurements at 2-km altitude intervals. The systematic error was estimated to be 10%-15% positive above 28 km, and the total random error to be 5%-21%. Comparisons of the Rikubetsu radiometer data with ozone sondes at Sapporo, and HALOE show that the ozone-mixing-ratio data, between 22 and 32 km, agree within the calculated 10% systematic error. On February 17, 2001, Corresponding author: Tomoo Nagahama, SolarTerrestrial Environment Laboratory, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan. E-mail: nagahama@stelab.nagoya-u.ac.jp ( 2007, Meteorological Society of Japan temporary ozone decreases of 37% and 15% at 22 and 30 km were found, respectively, when the potential vorticity at 550 K and 800 K increased. Suggesting that the ozone decrease may have been due to the arrival of a different airmass. During this event, the temporal variation of the ozone mixing ratio was clearly detected with small scatter, indicating that the Rikubetsu radiometer measurements have sufficient precision and time resolution to detect such short-term variations of stratospheric ozone.

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Illuminance turbidity parameters and atmospheric extinction in the visible spectrum

Gueymard¹,

Kambezidis²

1997

Quart J Royal Meteoro Soc

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Expressions for the Linke, TL~, and Unsworth-Monteith, Tui, turbidity parameters in the visible region of the solar spectrum are derived for application in illumination studies. They are based on new determinations of the visible transmittances of various atmospheric constituents, obtained by spectrally integrating the atmospheric transmittances calculated with a spectral irradiance research code. The influence of pressure, of circumsolar radiation, and of different atmospheric constituents (including both stratospheric and tropospheric nitrogen dioxide) on the interpretation of turbidity is discussed. Tui is shown to be virtually free of parasitic variations with air mass or other factors, and to approximate the aerosol optical thickness at 555 nm quite closely.The experimental Tui has been obtained from measurements of direct illuminance for two days at Albany, New York, and compared to the aerosol optical thickness measured with a multiwavelength radiometer. The observed fair agreement between Tui and the experimental optical thickness at 555 nm suggests that the latter may be accurately approximated by the former, using equipment that can be easily calibrated in the laboratory-unlike sun photometers. The use of Tui in subsequent measurement campaigns is recommended rather than that of TL~.

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Ozone reference models for the middle atmosphere

Cited by 65 publications

References 92 publications

Ground-Based Millimeterwave Measurements of Mesosopheric and Stratospheric Ozone Employing an SIS Mixer Receiver.

Ground-Based Millimeterwave Measurements of Mesosopheric and Stratospheric Ozone Employing an SIS Mixer Receiver.

Ground-Based Millimeter-Wave Radiometer for Measuring the Stratospheric Ozone over Rikubetsu, Japan

Illuminance turbidity parameters and atmospheric extinction in the visible spectrum

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