1 edition of Surface ozone found in the catalog.
|Statement||guest editor, Al Lefohn.|
|Series||Atmospheric environment -- v. 28, no. 1., Atmospheric environment (Oxford, England : 1994) -- v. 28, no. 1.|
|Contributions||Lefohn, Allen S.|
|The Physical Object|
|Pagination||176, ii p. :|
|Number of Pages||176|
The evolution of ozone in the past is important because of its dramatic influence on the biosphere and humans but has not been known for most of the time, except for some measurements of near-surface ozone since the end of the 19th century. This gap can be . The ozone layer lies approximately kilometers ( miles) above the Earth's surface, in the stratosphere. Depletion of this layer by ozone depleting substances (ODS) will lead to higher UVB levels, which in turn will cause increased skin cancers and cataracts and potential damage to some marine organisms, plants, and plastics.
Elevated surface ozone concentrations affect human health through asthma and other respiratory problems, especially during extreme heat, leading to excess mortality (Levy and Patz ).Additionally, ozone is a powerful oxidant that damages the physiology of most plants (Lombardozzi et al ), with impacts on crop yields (Tai et al , Chuwah et al ) and global carbon and . 1 Introduction Surface ozone concentrations are determined by complex interactions between radiative chemical and meteorological processes. Ozone is classified as a secondary pollutant since it is not released directly into the atmosphere, but is photochemically produced .
In a first-ever study using ozone data from commercial aircraft, CIRES researchers found that levels of the pollutant in the lowest part of Earth's atmosphere have increased across the Northern Hemisphere over the past 20 years. That's even as tighter controls on emissions of ozone precursors have lowered ground-level ozone in some places, including North America and Europe. Surface ozone regulation. Surface ozone (O 3) is a secondary photochemical pollutant formed from a number of reactions involving volatile organic compounds (VOCs), nitrogen oxides (NO x ≡ NO + NO 2) and production and surface mixing ratios are also dependent on a complex combination of meteorological processes including incoming solar radiation, temperature, humidity, boundary.
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Surface ozone vs. the ozone layer. Although the ozone found at the Earth's surface is the same chemical species as that found in the ozone layer, they have very different sources, atmospheric chemistry, and affect human health differently as ozone layer protects people from the sun's most damaging ultraviolet rays.
Because the ozone layer is located high in the atmosphere, people. Surface-level ozone and other compounds. The next most significant greenhouse gas is surface, or low-level, ozone (O 3).Surface O 3 is a result of air pollution; it must be distinguished from naturally occurring stratospheric O 3, which has a very different role in the planetary radiation primary natural source of surface O 3 is the subsidence of stratospheric O 3 from the upper.
Buy Sao Paulo's "Surface Ozone Layer" and the Atmosphere: Characteristics of tropospheric ozone concentrations in the city and how the atmosphere influences them. on FREE SHIPPING on qualified orders. However, because the instrument has a weak retrieval sensitivity to ground-level ozone (Bowman ), the day-level correlations between satellite retrieved-ozone and surface ozone were relatively weak, with correlation coefficient (R) ranging from to for sites in southern China and ranging from to for sites in northern China Author: Riyang Liu, Zongwei Ma, Yang Liu, Yanchuan Shao, Wei Zhao, Jun Bi.
ozone layer or ozonosphere, region of the stratosphere containing relatively high concentrations of ozone, located at altitudes of 12–30 mi (19–48 km) above the earth's in the ozone layer is formed by the action of solar ultraviolet light on oxygen. The ozone layer prevents most ultraviolet (UV) and other high-energy radiation from penetrating to the earth's surface but does.
We apply the Regional chEmistry and trAnsport Model to analyze summertime O 3 observations over the contiguous United States. We show that the evaluation of simulated timing of surface ozone maximum with observations provides another independent constraint on the model in addition to O 3 concentrations.
Over regions with massive biogenic isoprene emissions,O 3 peak. The Environmental Protection Agency (EPA) designates surface ozone as a harmful pollutant and has recently reduced the ozone daily maximum 8-h average (MDA8) exceedance threshold from 75 to 70 ppbv across the United States, making the job for air quality (AQ) forecasters more challenging (Cooper et al.
; EPA ).To help AQ forecasters with the prediction of ozone MDA8, various tools have. The ultraviolet (UV)/ozone surface cleaning method is reviewed. The UV/ozone cleaning procedure is an effective method of removing a variety of contaminants from surfaces. The nationwide extent of surface ozone pollution in China and its comparison to the global ozone distribution have not been recognized because of the scarcity of Chinese monitoring sites before Here we address this issue by using the latest 5 year (–) surface ozone measurements from the Chinese monitoring network, combined with the recent Tropospheric Ozone Assessment Report.
Because ozone concentration is typically higher near the top of PBL and all the way to the free troposphere than at the surface due to stronger solar radiation and the accumulation of ozone precursors near the boundary layer top, enhanced mixing induces stronger downward transport of ozone to the surface (Sun et al., ).
Monthly‐averaged surface ozone variations at Waliguan, Okinawa and Mondy. All observed (red dots) and simulated (black: regional model, blue: global model) data are forexcept observations at Mondy which are an average of and data. Vertical bars on the observational data indicate one standard deviation of the hourly means.
surface ozone study of eastern Virginia. [Washington]: National Aeronautics and Space Administration, Scientific and Technical Information Office ; Springfield, Va.: For sale by the National Technical Information Service, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book.
Ozone pollution and rice productivity. Surface ozone refers to the ozone found in the troposphere — Earth’s lowest atmospheric layer extending about 20 kilometers, or nearly miles, above sea level.
This surface ozone lies below “the ozone layer,” which. Ozone air pollution threatens future global food security 1,2,3, certain regions and crops, including rice in China, ozone pollution is projected to be. China’s nationwide ozone monitoring network initiated in has observed severe surface ozone pollution.
This network, combined with the recent Tropospheric Ozone Assessment Report (TOAR) data set, offers a more comprehensive view on global surface ozone distribution and trends. Here, we report quantitative estimates of the warm-season (April–September) surface ozone trends and resulting.
Toys, books, and clothes all make for great gifts for children. But what if your gift could offer that little something extra special like a way to help save the planet.
a VOC that can increase surface (AKA “bad”) ozone, by some species of trees, especially in the Northeastern U.S. Scientists know that trees really do this, although. Ozone in the stratosphere—a layer of the atmosphere between 15 and 50 kilometers (10 and 31 miles) above us—acts as a shield to protect Earth’s surface from the sun’s harmful ultravio-let radiation.
Without ozone, the Sun’s intense UV radiation would sterilize the Earth’s surface. However, surface ozone showed increasing trends in most of the cities from towhich indicates a stronger photochemical pollution. 'It is so inspiring that the blue sky is coming back.
TOAR’s primary goals are: (1) Produce the first comprehensive tropospheric ozone assessment report based on all available surface ozone observations, the peer-reviewed literature and new analyses, and (2) generate easily accessible, documented ozone exposure and dose metrics at thousands of measurement sites around the world (urban and non.
USING OZONE. HOW TO USE OZONE SAFELY. HOW TO DEODORIZE URINE ODORS. and this book proposes to serve as an overview for professional cleaning and restoration technicians who desire more precise lower surface of the brain's frontal lobe.
The olfactory lobe interprets the. Tropospheric ozone--ozone between Earth's surface and 12 to 15 kilometers above Earth--is a greenhouse gas and air pollutant that, at high levels, can harm people's lungs and damage plants.
In addition, right at the alleged ozone hole is a HUGE source of natural chlorine: Mt. Erebus, a continuous caldera volcano that expels vast amounts all year long.
And it is so high [ 3, metres (12, ft) ] that the eruptions are already two miles high. Since then a number of books and papers have been published about atmospheric s: Introduction. Surface ozone (O 3) is a secondary air pollutant, despite its detrimental effects on human health, field experiments has demonstrated that the O 3 causes substantial damage to plant and agricultural crops (Amann et al.
; Fuhrer ).Exposure of high O 3 concentration greater than 40 parts per billion by volume (ppbv) causes large yield losses of many agriculture crops.