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Friday, July 24, 2020 | History

4 edition of Origin of ozone NO[subscript x] in the tropical troposphere found in the catalog.

Origin of ozone NO[subscript x] in the tropical troposphere

Origin of ozone NO[subscript x] in the tropical troposphere

a photochemical analysis of aircraft observations over the South Atlantic basin

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  • 37 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Nitrogen oxides,
  • Ozone,
  • Tropical regions,
  • Troposphere,
  • Photochemical reactions,
  • Marine meteorology,
  • Oxidation,
  • Air water interactions

  • Edition Notes

    Other titlesPhotochemical analysis of aircraft observations over the South Atlantic basin.
    StatementD.J. Jacob ... [et al.].
    Series[NASA contractor report] -- 207268., NASA contractor report -- NASA CR-207268.
    ContributionsJacob, D. J., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17583547M
    OCLC/WorldCa41639760

    Cumuliform cloudscape over Swifts Creek, Australia In meteorology, a cloud is an aerosol consisting of a visible mass of minute liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body or similar space. Water or various other chemicals may compose the droplets and crystals. On Earth, clouds are formed as a result of .   eBook is an electronic version of a traditional print book THIS can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THIS is used solely as a reading device such as Nuvomedia's Rocket eBook.).

    Get this from a library! Tropospheric modelling and emission estimation: chemical transport and emission modelling on regional, global, and urban scales. [Adolf Ebel; R Friedrich; H Rodhe;] -- The end result of policy-related experimental and theoretical scientific work on the abatement of atmospheric emissions is a hierarchy of computer models that can be used to analyse and . A key atmospheric gas is ozone. Ozone in the stratosphere is beneficial to the biosphere because it absorbs a significant fraction of the sun's shorter wavelength ultraviolet radiation. Ozone in the troposphere is a pollutant (respiratory irritant in humans and acts to damage crops, vegetation, and many materials).

    Page 8 Atmospheric Observations of Voc, No x, and Ozone Introduction. Chapter 6 contains a discussion of the central role of the VOC/NO x ratio (the ratio of volatile organic compounds to oxides of nitrogen) in determining the chemical character of the VOC-NO x-ozone important points were made about the VOC/NO x ratio: First, the atmospheric boundary layer . Ozone is formed when CO, CH{sub 4}, and NMHCs react in the presence of NO{sub {times}} and sunlight. Ozone concentrations in more» tropical regions (where the bulk of biomass burning occurs) may increase due to biomass burning.


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Origin of ozone NO[subscript x] in the tropical troposphere Download PDF EPUB FB2

Get this from a library. Origin of ozone NO[subscript x] in the tropical troposphere: a photochemical analysis of aircraft observations over the South Atlantic basin. [D J Jacob; United States.

National Aeronautics and Space Administration.;]. Tropospheric ozone is produced when NO reacts with peroxy radicals to give NO 2 can catalyze the destruction of ozone in the troposphere where it is wanted.

OriEri22 September do seem to confuse the issue. But the usage most common follows from the subscript (x) in NO x is a variable for the oxygen of the formula. Using it for N. Ozone (/ ˈ oʊ z oʊ n /), or trioxygen, is an inorganic molecule with the chemical formula O is a pale blue gas with a distinctively pungent smell.

It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2, breaking down in the lower atmosphere to O 2 ().Ozone is formed from dioxygen by the action of ultraviolet (UV) light and electrical discharges within the Chemical formula: O₃. Stratosphere –troposphere exchange in this region occurs between the upper and mid-equatorial troposphere and the lowermost stratosphere.

The subtropical tropopause drops rapidly near 30° from tropical heights to the level of the extratropical tropopause (approximately from hPa to hPa) (Figure 1). Trajectories from analyzed winds.

Ozone is a greenhouse gas, and deep STE down to the lower troposphere can also contribute to enhanced ozone levels at the ground surface that affects plant and human health [25,26]. However, also in the background free troposphere, pronounced ozone concentration increases have occurred, which are here confirmed by a review of measurements that were made in the ’s – 50’s in Europe.

The potential for tropospheric ozone production from carbon monoxide and hydrocarbon oxidation, with NO x acting as catalyst, is enormous. The notion of undiluted plumes in the upper troposphere owes its origin to the work of Riehl and Malkus ().

Based on an analysis of moist static energy (MSE) in the upper troposphere, they correctly identified moist deep convection as the source of heat that balances the net cooling from radiation and large-scale ascent. The main effects of SST changes are a warmer troposphere, a warmer and higher tropopause, cell-like structures of heating and cooling at low and middlelatitudes in the middle atmosphere, warming in the summer mesosphere, water vapor increase throughout the domain, and O 3 decrease in the lower tropical stratosphere.

No noticeable change in. We will drop the subscript X in what follows. From equation (), we can determine the vertical flux F of pollutant X at point M by continuous measurement of C and w.

Due to the turbulent nature of the flow, both C and w show large fluctuations with time, as illustrated schematically in.

The effects of anthropogenic emissions of nitrous oxide (N 2 O), carbon dioxide (CO 2), methane (CH 4) and the halocarbons on stratospheric ozone (O 3) over the twentieth and twenty-first centuries are isolated using a chemical model of the future evolution of ozone will depend on each of these gases, with N 2 O and CO 2 probably playing the.

As these trace species act as ozone precursors, biomass burning plays an important role in the ozone budget of the troposphere. A three-dimensional chemical-transport model of the troposphere has been used to quantify the impact of biomass burning on the distribution of the main chemical tropospheric chemical species.

Troposphere definition, the lowest layer of the atmosphere, 6 miles (10 km) high in some areas and as much as 12 miles (20 km) high in others, within which there is a steady drop in temperature with increasing altitude and within which nearly all cloud formations occur and weather conditions manifest themselves.

See more. Ozone is an elemental molecule with formula O3. An explosive, pale blue gas (b.p. ℃) that has a characteristic, pleasant odour, it is continuously produced in the upper atmosphere by the action of solar ultraviolet radiation on atmospheric is an antimicrobial agent used in the production of bottled water, as well as in the treatment of meat, poultry and other foodstuffs.

ERA-Interim uses prescribed climatological ozone fields for the radiative calculations, including a potential high bias in ozone concentrations in the tropical lower stratosphere (e.g.

The ozone profile trends in the tropical lowermost stratosphere have long been a topic of scientific interest [Randel et al., ; Randel and Thompson, ] and are thought to be largely dynamical in origin [e.g., World Meterorological Organization/United Nations Environment Programme,and references therein].

Understanding whether. Stratospheric Ozone Chemistry / 71 ATMOSPHERE-OCEAN 46 (1)69–92 doi/ao Canadian Meteorological and Oceanographic Society Fig.

1 Net ozone production from the CMAM model ( ozone molecules cm–3 day–1) in March (courtesy of Stephen Beagley, York University). Fig. 2 Zonal and monthly mean ozone production (cm–3. Chemistry of Ozone in the Urban and Regional Atmosphere (J H Seinfeld) Depletion of Tropospheric Ozone during Arctic Spring: Field and Laboratory Studies of the Role of Hydrocarbons (H Niki) Inverse Methods in Atmospheric Chemistry (R Prinn & D Hartley) NO x in the Non-Urban Troposphere (M A Carroll & A M Thompson).

The air pollution caused by the immense wildfire that occurred in Northeast Patagonia, Argentina in the summer is presented in this work through the assessment of ground-based data, satellite measurements and modeled concentrations of NO, NO2, CO, PM, PM10 and AOD.

where ρ X (z) denotes the mixing ratio of X at a given point z, and “entry” denotes the entry point of X into the stratosphere, i.e., the tropical tropopause. The angular brackets indicate that the ratio inside needs to be averaged over the whole stratosphere. In practice, one can take advantage of the fact that, for most compounds, the scatter plot of F X versus F CFC forms.

PARTIAL PRESSURE. The partial pressure PX of a gas X in a mixture of gases of total pressure P is defined as the pressure that would be exerted by the molecules of X if all the other gases were removed from the mixture.

Dalton's law states that PX is related to P by the mixing ratio CX: () For our applications, P is the total atmospheric pressure. Similarly to, we use. A key part of the coupling between the troposphere and stratosphere occurs through the propagation and breaking of planetary-scale Rossby waves and gravity waves.: The ozone hole that forms each year in the stratosphere over Antarctica was slightly smaller in than average in recent decades, according to NASA satellite data.: Clearly a fan, Appel packs this handsome book .Voemel, H.

et al., Ozone sonde cell current measurements and implications for observations of near-zero ozone concentrations in the tropical upper troposphere, Atmospheric Measurement Techniques, 3, 2,/amtOzone was a very important and lively topic for research at this time.

In his book "Ozone and Antozone", Cornelius Fox (2) wrote in than the saturation mixing ratio at the cold temperatures found in the tropical upper troposphere.

The details of how this drying process works and how it might respond to global change is an active field.