Nitrogen Dioxide and Nitric Oxide in Non-Urban Air

Ripperton, Lyman A.; Kornreich, L. D.; Worth, James J. B.

doi:10.1080/00022470.1970.10469446

Cited by 17 publications

(4 citation statements)

References 4 publications

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“…For example, Chameides and Walker [1976] compute an average NO•. concentration of the order of 10 ppb, which compares quite favorably with the observations of Ripperton et al [1970] in the 'nonurban' planetary boundary layer. Robinson and Robbins [1969] cite a number of measurements taken throughout the world and suggest low-level average concentrations for NO and NO•.…”

Section: Odd Nitrogensupporting

confidence: 53%

A numerical study of tropospheric photochemistry using a one-dimensional model

Fishman¹,

Crutzen²

1977

J. Geophys. Res.

117

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A numerical study of the tropospheric ozone budget is conducted by using a one-dimensional model which takes into account both diffusion and photochemical processes. It is shown that if ozone is treated as an inert species in the troposphere, large vertical eddy diffusion coefficients and an ozone flux from the stratosphere more than twice that given by Fabian and Pruchniewicz (1976) and Danielsen and Mohnen (1977) must be used to reproduce the observed tropospheric ozone profiles in the northern hemisphere mid-latitudes during the summer. Furthermore, consideration of the reactions which destroy ozone in the troposphere would lead to the destruction of about half of the ozone injected in the troposphere. Thus it is likely that there are also reactions which produce ozone in the troposphere, and we examine the possibility that methane oxidation reactions are responsible for this production (Crutzen, 1974a). Indeed, we show that a model which includes both the aforementioned photochemistry and prescribed physical processes can reproduce the observations reasonably; however, the uncertainty of certain reaction rate constants and the lack of understanding of the tropospheric odd nitrogen budget prohibit the quantification of the tropospheric ozone budget. On the other hand, the model results suggest that the time scales of both the physical and photochemical processes are both of the order of 1-3 months. It is therefore certainly not easy to infer the effects of this slow, but ever present, photochemistry from ozone measurements, and it is understandable why it has gone undetected previously.In addition to photochemical ozone destruction in the troposphere, Crutzen [1973, 1974a] also theorized that catalytic production of ozone in the troposphere can take place through the process of methane oxidation. This hypothesis was looked upon with skepticism in the meteorological community, since previous studies treated ozone inertly in the lower atmosphere, Griggs [1968]; quantum yield from Philen et al. [ 1977] Griggs [1968]; quantum yield from Philen et al. [1977] Noxon [ 1970] Hampson and Garyin [1975] Hampson and Garvin [1975] Hampson and Garvin [1975] Hampson and Garyin [ 1975] Hampson and Garvin [1975] Heicklen [1968] Hampson and Garvin [1975] Hampson and Garvin [1975] T. Osif (unpublished data, 1975) T. Osif (unpublished data, 1975) Hampson and Garvin [1975] Hampson and Garyin [1975] Hampson and Garvin [ 1975] Hampson and Garyin [ 1975 ] Hampson and Garvin [1975] Hampson and Garvin [1975] Hampson and Garvin [1975] Hampson and Garyin [1975] Levy [1974] Levy [1974] Hampson and Garvin [I 975] Hampson and Garyin [I 975] Schumb et al. [1955] Hampson and Garvin [1975] Hampson and Garyin [1975] Hampson and Garyin [1975] Johnston and Graham [1973] Hampson and Garyin [ 1975] Leighton [1961 ] Hampson and Garyin [! 975] Hampson and Garvin [ 1975] Hampson and Garvin [1975] Crutzen [1974b] Hampson and Garvin [1975] Hampson and Garyin [ 1975 ] Hampson and Garyin [1975] Hampson and Garyin [ 1975] Levy [1974] Levy [1974]

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Section: Odd Nitrogensupporting

confidence: 53%

A numerical study of tropospheric photochemistry using a one-dimensional model

Fishman¹,

Crutzen²

1977

J. Geophys. Res.

117

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“…In addition, O3 in Patna decreased 103.96% since the FCC (Figure 3, Table S1), which was the largest among all of the 26 cities. Previous studies had shown that an inverse relationship existed between O3 and NO2 [42][43][44] , which was also detected by the analysis results of this study, as shown in Figure S10 (the variation trends of O3 and NO2 were nearly opposite). Based on the above points, it was inferred that the ongoing human activities and the interactions between air pollutants caused the increase in NO2 in Patna.…”

Section: Quantification Of the Impact Of The Fcc And Lockdowns On Airsupporting

confidence: 86%

Global air quality change during COVID-19: a synthetic result of human activities and meteorology

Yang¹,

Wang²,

Wang³

et al. 2020

Preprint

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“…Plants emit terpenes to the atmosphere 28 which may react photochemically with nitrogen oxides (which can also be of biological origin) to form O3. 49 However, terpenes also react directly with O 3 to destroy it. Weather can affect surface O 3 concentrations because it affects local mixing.…”

Section: Background Ozone Concentrationsmentioning

confidence: 99%