Validation of ground‐based observations of stratomesospheric ozone

Schneider, N.; Lezeaux, Olivier; Noë, J. de La; Urban, Joachim; Ricaud, Philippe

doi:10.1029/2002jd002925

Cited by 15 publications

(18 citation statements)

References 26 publications

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“…Previous workers reported total random error in the retrieved stratospheric ozone profile of 3%-10% for the measurement integrated over 1 day (Connor et al 1995) or 2 h (Schneider et al 2003). Although the total random error in the present work is comparable to that in these previous works, we have achieved this value with a 1-h integration time.…”

Section: Comparison With Earlier Radiometerscontrasting

confidence: 47%

“…When we consider the integration time of the measurement, the resulting ozone error value is a factor of 2 to 5 lower (e.g., Connor et al 1995;Parrish et al 1992;Schneider et al 2003). Therefore, we can obtain an ozone spectrum with a lower random-noise level than previous ones, and make measurements of the ozone distribution with higher precision or faster.…”

Section: Comparison With Earlier Radiometersmentioning

confidence: 99%

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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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Section: Comparison With Earlier Radiometerscontrasting

confidence: 47%

Section: Comparison With Earlier Radiometersmentioning

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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“…Microwave radiometers record emission spectra from thermally induced rotational transitions of atmospheric ozone, typically around 110 or 142 GHz (Parrish et al, 1992;Kämpfer, 1995;Connor et al, 1995;Schneider et al, 2003). Since the recorded transition lines are broadened by pressure, the recorded line shape contains information on the vertical distribution of ozone.…”

Section: Ndacc Observations 421 Techniquesmentioning

confidence: 99%

Technical Note: Validation of Odin/SMR limb observations of ozone, comparisons with OSIRIS, POAM III, ground-based and balloon-borne instruments

et al. 2008

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Abstract. The Odin satellite carries two instruments capable of determining stratospheric ozone profiles by limb sounding: the Sub-Millimetre Radiometer (SMR) and the UVvisible spectrograph of the OSIRIS (Optical Spectrograph and InfraRed Imager System) instrument. A large number of ozone profiles measurements were performed during six years from November 2001 to present. This ozone dataset is here used to make quantitative comparisons with satellite measurements in order to assess the quality of the Odin/SMR ozone measurements. In a first step, we compare Swedish SMR retrievals version 2.1, French SMR ozone retrievals version 222 (both from the 501.8 GHz band), and the OSIRIS retrievals version 3.0, with the operational version 4.0 ozone product from POAM III (Polar Ozone Atmospheric Measurement). In a second step, we refine the Odin/SMR validation .1 dataset is consistent in all altitude ranges with POAM III, NDACC and large balloon-borne instruments measurements. In the SMR v2.1 data, no different systematic error has been found in the 0-35km range in comparison with the 35-60 km range. The same feature has been highlighted in both hemispheres in SMR v2.1/POAM III intercomparisons, and no latitudinal dependence has been revealed in SMR v2.1/NDACC intercomparisons.

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“…A millimeter-wave radiometer (MWR) enables the continuous measurement of the atmospheric constituents distributed from the middle stratosphere to the lower mesosphere, irrespective of day or night with a high temporal resolution of ~1 h, because it records an emission spectrum caused by the rotational transition of the atmospheric constituents. Such ground-based MWR measurements have been carried out at more than a dozen sites in the past decades (e.g., Daae et al 2014;Fiorucci et al 2013;Palm et al 2010;Parrish et al 2014;Schneider et al 2003;Studer et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Observations of stratospheric and mesospheric O3 with a millimeter-wave radiometer at Rikubetsu, Japan

et al. 2016

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We have been measuring brightness temperature spectra of the atmospheric ozone (O 3 ) emission at 110.83 GHz with a millimeter-wave radiometer (MWR) located at Rikubetsu, Japan, since November 1999. Tropospheric opacities, which were also measured with the MWR and were used to take into account attenuation of the O 3 signal from the stratosphere and mesosphere, were corrected using the tropospheric opacity calculated from radiosonde data. Temporal variations of the measured spectral intensity of O 3 , likely due to degradations of the superconductor-insulator-superconductor receiver and of the vessel for cold calibration load, were also corrected using scaling factors derived from ozonesonde data up to an average height of 35 km and Microwave Limb Sounder (MLS) monthly mean climatology above the sonde height. The vertical profiles of the O 3 mixing ratio in the altitude range from 24 to 56 km were retrieved from the spectra with the optimal estimation approach. The retrieval errors from uncertainties in the scaling factor, the corrected tropospheric opacity, and atmospheric temperature, as well as those from spectral noise, were evaluated, and we found that the main retrieval errors resulted from uncertainties in the scaling factor and tropospheric opacity. The retrieved O 3 profiles were compared with those from the Solar Backscatter Ultraviolet (SBUV/2), the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER), and the MLS instruments onboard satellites. The retrieved O 3 mixing ratios at individual levels agreed with the MLS version 3.3 or 3.4 data with an average difference better than ±5 % and a standard deviation of 4-9 %. Additionally, the retrieved O 3 profiles were in reasonable agreement with the SABER version 2.0 O 3 profiles and the SBUV/2 version 8.6 O 3 profiles, in line with the validation results of their satellite data in the earlier literature.

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Validation of ground‐based observations of stratomesospheric ozone

Cited by 15 publications

References 26 publications

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

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

Technical Note: Validation of Odin/SMR limb observations of ozone, comparisons with OSIRIS, POAM III, ground-based and balloon-borne instruments

Observations of stratospheric and mesospheric O3 with a millimeter-wave radiometer at Rikubetsu, Japan

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