A Concentration and Measurement of Atmospheric Ozone

Paneth, F. A.; Edgar, Justin

doi:10.1038/142571b0

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…A method for measurement of O 3 using colour changes in test papers impregnated with starch-iodine was developed by Christian Schoenbein. It was used at over 300 sites worldwide, including locations in Europe [32][33][34][35][36][37], North America [38], and Central and South America and Asia [39,40], yielding approximately one million measurements by the end of the 19th century [41,42]. However, deficiencies with the methodology prevented standardisation between these monitoring sites, making comparison difficult.…”

Section: Historical Measurements 1850s-1940smentioning

confidence: 99%

Insights from a Chronology of the Development of Atmospheric Composition Monitoring Networks Since the 1800s

2016

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Abstract:Ground-based monitoring networks for evaluating atmospheric composition relevant to impacts on human health and the environment now exist worldwide (according to the United Nations Environment Programme, 48% of countries have an air quality monitoring system). Of course, this has not always been the case. Here, we analyse for the first time the key developments in network coordination and standardisation over the last 150 years that underpin the current implementations of city-scale to global monitoring networks for atmospheric composition. Examples include improvements in respect of site type and site representativeness, measurement methods, quality assurance, and data archiving. From the 1950s, these developments have progressed through two distinct types of network: those designed for the protection of human health, and those designed to increase scientific understanding of atmospheric composition and its interaction with the terrestrial environment. The step changes in network coordination and standardisation have increased confidence in the comparability of measurements made at different sites. Acknowledged limitations in the current state of monitoring networks include a sole focus on compliance monitoring. In the context of the unprecedented volumes of atmospheric composition data now being collected, we suggest the next developments in network standardisation should include more integrated analyses of monitor and other relevant data within "chemical climatology" frameworks that seek to more directly link the impacts, state and drivers of atmospheric composition. These approaches would also enhance the role of monitoring networks in the development and evaluation of air pollution mitigation strategies.

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Section: Historical Measurements 1850s-1940smentioning

confidence: 99%

Insights from a Chronology of the Development of Atmospheric Composition Monitoring Networks Since the 1800s

2016

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La transparence de l'atmosphere. VI. La brume blanche

Duclaux¹

1940

J. Phys. Radium

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Sommaire. 2014 On a souvent interprété les mesures de l'absorption atmosphérique en représentant les coefficients d'absorption par la somme de deux termes, l'un de diffusion moléculaire, l'autre indépendant de la longueur d'onde. Ce second terme correspondrait à une brume blanche, faisant disparaître les objets sans modifier leur couleur. Cette brume blanche ne peut être qu'exceptionnelle; dans l'immense majorité des cas, les effets obtenus par les filtres colorés en photographie, et l'observation visuelle, montrent que la brume absorbe les rayons d'autant plus que leur longueur d'onde est plus courte. Des mesures faites spécialement conduisent au même résultat. La décomposition de l'absorption en un terme de diffusion et un terme de brume blanche est donc un artifice qui ne peut donner que des résultats sans valeur. SÉRIE N-111. -TOME 1.:B° 2. FÉVRIER 19M.

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A Concentration and Measurement of Atmospheric Ozone

Cited by 2 publications

References 3 publications

Insights from a Chronology of the Development of Atmospheric Composition Monitoring Networks Since the 1800s

Insights from a Chronology of the Development of Atmospheric Composition Monitoring Networks Since the 1800s

La transparence de l'atmosphere. VI. La brume blanche

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