Direct comparisons of GOMOS and SAGE III NO&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt; vertical profiles

Hakkarainen, Janne; Tamminen, J.; Moore, James; Kyrölä, E.

doi:10.5194/amt-5-1841-2012

Cited by 2 publications

(4 citation statements)

References 16 publications

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“…GOMOS NO 3 have been compared with two balloon measurements in Renard et al (2008), but with inconclusive results. In Hakkarainen et al (2012) GO-MOS measurements were compared with SAGE III lunar measurements and the agreement was found to be within ±25 %.…”

Section: Gomos Measurementsmentioning

confidence: 86%

“…Brasseur and Solomon (2005) and Kyrölä et al (2010a). Climatological comparison with HALOE can be found in Hauchecorne et al (2005).…”

Section: Gomos Measurementsmentioning

confidence: 96%

“…Around the NO 3 maximum all latitudes show very high correlations 0.95. The reason for this high correlation is the fact that the mixing ratio of NO 3 is very sensitive to temperature (see Hauchecorne et al, 2005;Marchand et al, 2007;Kyrölä et al, 2010a;Hakkarainen, 2013). When we calculate the correlation of WACCM's NO 3 with the model temperature (in the stratosphere MERRA), we get values ranging from 0.7 to 0.99 in the altitude range 2-50 hPa.…”

Section: Nitrogen Trioxidementioning

confidence: 97%

“…Nitrogen trioxide is a part of the O 3 -NO 2 -NO chemistry, has a very strong diurnal variation at all altitudes and is almost absent during daytime (see e.g. Hauchecorne et al, 2005).…”

Section: E Kyrölä Et Al: Waccm-gomos 1 Introductionmentioning

confidence: 99%

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Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

et al. 2018

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Abstract. Most of our understanding of the atmosphere is based on observations and their comparison with model simulations. In middle atmosphere studies it is common practice to use an approach, where the model dynamics are at least partly based on temperature and wind fields from an external meteorological model. In this work we test how closely satellite measurements of a few central trace gases agree with this kind of model simulation. We use collocated vertical profiles where each satellite measurement is compared to the closest model data. We compare profiles and distributions of O3, NO2 and NO3 from the Global Ozone Monitoring by Occultation of Stars instrument (GOMOS) on the Envisat satellite with simulations by the Whole Atmosphere Community Climate Model (WACCM). GOMOS measurements are from nighttime. Our comparisons show that in the stratosphere outside the polar regions differences in ozone between WACCM and GOMOS are small, between 0 and 6%. The correlation of 5-day time series show a very high 0.9–0.95. In the tropical region 10° S–10° N below 10 hPa WACCM values are up to 20 % larger than GOMOS. In the Arctic below 6 hPa WACCM ozone values are up to 20 % larger than GOMOS. In the mesosphere between 0.04 and 1 hPa the WACCM is at most 20 % smaller than GOMOS. Above the ozone minimum at 0.01 hPa (or 80 km) large differences are found between WACCM and GOMOS. The correlation can still be high, but at the second ozone peak the correlation falls strongly and the ozone abundance from WACCM is about 60 % smaller than that from GOMOS. The total ozone columns (above 50 hPa) of GOMOS and WACCM agree within ±2 % except in the Arctic where WACCM is 10 % larger than GOMOS. Outside the polar areas and in the validity region of GOMOS NO2 measurements (0.3–37 hPa) WACCM and GOMOS NO2 agree within −5 to +25 % and the correlation is high (0.7–0.95) except in the upper stratosphere at the southern latitudes. In the polar areas, where solar particle precipitation and downward transport from the thermosphere enhance NO2 abundance, large differences up to −90 % are found between WACCM and GOMOS NO2 and the correlation varies between 0.3 and 0.9. For NO3, we find that the WACCM and GOMOS difference is between −20 and 5 % with a very high correlation of 0.7–0.95. We show that NO3 values strongly depend on temperature and the dependency can be fitted by the exponential function of temperature. The ratio of NO3 to O3 from WACCM and GOMOS closely follow the prediction from the equilibrium chemical theory. Abrupt temperature increases from sudden stratospheric warmings (SSWs) are reflected as sudden enhancements of WACCM and GOMOS NO3 values.

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Section: Gomos Measurementsmentioning

confidence: 86%

“…Brasseur and Solomon (2005) and Kyrölä et al (2010a). Climatological comparison with HALOE can be found in Hauchecorne et al (2005).…”

Section: Gomos Measurementsmentioning

confidence: 96%

Section: Nitrogen Trioxidementioning

confidence: 97%

“…Nitrogen trioxide is a part of the O 3 -NO 2 -NO chemistry, has a very strong diurnal variation at all altitudes and is almost absent during daytime (see e.g. Hauchecorne et al, 2005).…”

Section: E Kyrölä Et Al: Waccm-gomos 1 Introductionmentioning

confidence: 99%

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Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

et al. 2018

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FTIR Spectroscopy of NO₃: Perturbation Analysis of the ν₃+ν₄ State

et al. 2013

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High-resolution Fourier transform infrared spectra of the 15NO3 ν3+ν4 and ν3+ν4-ν4 bands were observed in the 1472 and 1112 cm(-1) regions. Compared with the case of 14N species, large effects of perturbations were recognized in many rotational levels of the 15NO3 ν3+ν4 state, and it was found that the ν2+2ν4 state is responsible for the perturbation. Although a direct Coriolis interaction (Δν2 = 1, Δν3(or Δν4)=1) is not present between these two vibrational levels, anharmonic terms including Φ344 and Φ444 mix ν3+ν4 and 3ν4, ν2+2ν4, and ν2+2ν4 mixes with ν2+ν4 to produce Coriolis interaction between ν3+ν4 and ν2+2ν4. An analysis gave the energy difference of 7.274 cm(-1) between two levels, and interaction parameters were determined. Similar perturbation analysis was applied for the 14N species, and the previous (p)P(N,K) assignment of the ν3+ν4 A'-ν4 E' band was changed for giving one A2' state. Spectral lines to another A1' state were not assigned because of weak intensity, which is explained by intensity anomaly through vibronic interaction, reflecting the transition moment of the B2E'-X2A2' electronic band.

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Direct comparisons of GOMOS and SAGE III NO<sub>3</sub> vertical profiles

Cited by 2 publications

References 16 publications

Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

FTIR Spectroscopy of NO₃: Perturbation Analysis of the ν₃+ν₄ State

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Direct comparisons of GOMOS and SAGE III NO&lt;sub&gt;3&lt;/sub&gt; vertical profiles

Cited by 2 publications

References 16 publications

Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

FTIR Spectroscopy of NO3: Perturbation Analysis of the ν3+ν4 State

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Product

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Direct comparisons of GOMOS and SAGE III NO<sub>3</sub> vertical profiles

FTIR Spectroscopy of NO₃: Perturbation Analysis of the ν₃+ν₄ State