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appauvrissement en ozone

ozone depletion

environnement - iate.europa.eu

Services de surveillance de l'appauvrissement en ozone

Ozone depletion monitoring services

détérioration de l'environnement - eur-lex.europa.eu

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Ozone depletion and global warming... Examination of ozone depletion data shows that an absence ofozone in the stratosphere produces an increase in UV-B radiation at the surfaceof the Earth....

général - core.ac.uk - PDF: core.ac.uk

Polar uv measurements-ozone depletion and biological significance... The link between ozone depletion and elevated levels of UV is clearly demonstrated with data from the National Science Foundation's UV Monitoring Network for Polar Regions....

PDF: nipr.repo.nii.ac.jp

Learning about ozone depletionAbstract Stratospheric ozone depletion has been much studied as a case history in the interaction between environmental science and environmental policy....

PDF: www.princeton.edu

Ozone depletion from nearby supernovae... Since that time improved tools for detailed modeling of atmospheric chemistry have been developed to calculate ozone depletion, and advances have been made also in theoretical modeling of supernovae and of the resultant gamma-ray spectra....

PDF: citeseerx.ist.psu.edu

Ozone depletion and chlorine loading potentialsThe recognition of the roles of chlorine and bromine compounds in ozone depletion has led to the regulation or their source gases....

PDF: hdl.handle.net

appauvrissement en ozone

ozone decrease

environnement - iate.europa.eu

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Ozone observations at syowa station from february 1987 to january 1988... The vertical distribution of ozone by chemical ozone sonde revealed that the total ozone depression results mainly from ozone decrease in the lower stratosphere

général - core.ac.uk - PDF: nipr.repo.nii.ac.jp

Annual variation of total ozone at syowa station, antarctica... The rate of total ozone decrease in August is less than 1.0...

PDF: nipr.repo.nii.ac.jp

Chemical contribution to future tropical ozone change in the lower stratosphere... Between the present and the end of the 21st century a significantincrease in ozone is found globally for the upper stratosphere and theextratropical lower stratosphere, while in the tropical lower stratosphereozone decreases significantly by up to 30%....

PDF: doaj.org

Uv reconstruction with long time series global radiation measurements... The results indicate that decrease of Global Radiation partially compensate the effect of ozone decrease on UV radiation

PDF: www.pmodwrc.ch

Upper stratospheric ozone decrease events due to a positive feedback between ozone and the ozone dissociation rate...10.13° E) over some years showed strong ozone decrease events within the stratopause region, particularly during the winter half-year....

PDF: core.ac.uk

ozone decline

environnement - iate.europa.eu

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Summertime total ozone variations over middle and polar latitudes... About 39% of the observed southern midlatitude ozone decline in December can be attributed to the polar ozone depletion up to November....

général - core.ac.uk - PDF: core.ac.uk

Simulation of stratospheric water vapor trends: impact on stratospheric ozone chemistry... Furthermore, a long-term decrease in global total ozone as well as a short-term ozone decline in the tropics after volcanic eruptions are modeled....

PDF: doaj.org

Simulation of stratospheric water vapor trends: impact on stratospheric ozone chemistry... Furthermore, a long-term decrease inglobal total ozone as well as a short-term ozone decline in thetropics after volcanic eruptions are modeled....

PDF: core.ac.uk

The qbo and interannual variation in total ozone... Is the modulation brought about by the circulation-produced QBO signal in the ozone concentration itself, or does the temperature QBO modulate the formation of polar stratospheric clouds (PSCs), leading to changes in the chemically induced Antarctic spring ozone decline rate....

PDF: hdl.handle.net

The impact of current ch4 and n2o atmospheric loss process uncertainties on calculated ozone abundances and trends... reservoir forms and has a modest impact on present day SH polar ozone (~±6%), and on the rate of past ozone decline and future recovery....

PDF: eprints.whiterose.ac.uk

depletion of the ozone layer

environnement - iate.europa.eu

ozone reduction

environnement - iate.europa.eu

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Using corrosion-like processes to remove poisons from electrocatalysts: a viable strategy to chemically regenerate irreversibly poisoned polymer electrolyte fuel cells ...∼1.6V(RHE) due to the high potential of the ozone reduction reaction....

général - core.ac.uk -

World problems of ecology... Acid rain, global warming, ozone reduction, widespread desertification and species loss: we have to face them now....

PDF: essuir.sumdu.edu.ua

Antarctic ozone decrease: possible impact on the seasonal and latitudinal distribution of total ozone as simulated by a 2-d model... The meteorological conditions (warmer temperature and the apparent lack of polar stratospheric clouds) at these latitudes do not seem to favor heterogeneous chemistry as the direct cause for the observed ozone reduction....

PDF: hdl.handle.net

Sources and sinks of atmospheric n,o and the possible ozone reduction due to industrial fixed nitrogen fertilizers. tellus... Based on our limited knowledge of the stability of atmospheric N,O we conclude that future growth in the usage of industrial fmed nitrogen fertilizers could cause a 1 % to 2 % global ozone reduction in the next 50 years....

PDF: www.tellusa.net

Revised estimates for ozone reduction by shuttle operation...0.2 percent ozone reduction for the Northern Hemisphere at 60 launches per year....

PDF: hdl.handle.net