Results 311 to 320 of about 3,732,579 (358)

Isotopic Composition of Atmospheric Mercury in China: New Evidence for Sources and Transformation Processes in Air and in Vegetation.

Environmental Science and Technology, 2016
The isotopic composition of atmospheric total gaseous mercury (TGM) and particle-bound mercury (PBM) and mercury (Hg) in litterfall samples have been determined at urban/industrialized and rural sites distributed over mainland China for identifying Hg ...
Ben Yu, Xuewu Fu, R. Yin, Hui Zhang, Xun Wang, Che-Jen Lin, Chuansheng Wu, Yiping Zhang, N. He, P. Fu, Zifa Wang, L. Shang, J. Sommar, J. Sonke, L. Maurice, B. Guinot, Xinbin Feng   +16 more
semanticscholar   +1 more source

The composition of museum atmospheres

Atmospheric Environment. Part B. Urban Atmosphere, 1990
Indoor pollutants can damage cultural property stored in museums, art galleries, libraries and archives. The paper reviews the atmospheric substances of concern and their sources. A relatively small number of measurements available for the interiors are restricted to just a few gases.
openaire   +2 more sources

ERA-20C: An Atmospheric Reanalysis of the Twentieth Century

, 2016
The ECMWF twentieth century reanalysis (ERA-20C; 1900–2010) assimilates surface pressure and marine wind observations. The reanalysis is single-member, and the background errors are spatiotemporally varying, derived from an ensemble.
P. Poli, H. Hersbach, D. Dee, P. Berrisford, A. Simmons, F. Vitart, P. Laloyaux, D. Tan, C. Peubey, J. Thepaut, Y. Trémolet, E. Holm, M. Bonavita, L. Isaksen, M. Fisher   +14 more
semanticscholar   +1 more source

Isotopic Composition of the Martian Atmosphere

Science, 1976
Results from the neutral mass spectrometer carried on the aeroshell of Viking 1 show evidence for NO in the upper atmosphere of Mars and indicate that the isotopic composition of carbon and oxygen is similar to that of Earth. Mars is enriched in 15 N relative to Earth by about 75 percent, a consequence of escape ...
Nier, Alfred O., McElroy, Michael B., Yung, Yuk Ling   +2 more
openaire   +4 more sources

Structure and Composition of the Atmosphere

2020
Earth is a complex system, which covers four main spheres given below and shown in Fig. 4.1:
Vlado Spiridonov, Mladjen Ćurić
openaire   +2 more sources

Atmospheric Scales of Motion and Atmospheric Composition

2000
Weather phenomena occur over a very broad range of scales of space and time, from the global circulation systems that extend around the earth’s circumference to the small eddies that cause cigarette smoke to swirl and mix with clear air. Each circulation can be described in terms of its approximate horizontal diameter and lifetime.
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Composition of the Martian atmosphere

Space Science Reviews, 1991
Data on the composition of the Martian atmosphere obtained by instruments aboard the Viking spacecraft are not of sufficient accuracy to address important questions regarding the composition and history of Mars. Laboratory analyses of gases trapped in glassy phases of shergottite meteorite EETA 79001 yield precise data, but it remains to be ascertained
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The composition of planetary atmospheres

Journal of Quantitative Spectroscopy and Radiative Transfer, 1971
Abstract The present status of research on the composition of planetary atmospheres is reviewed. It is shown that CO 2 is the major constituent in the atmospheres of Venus and Mars, and that H 2 is almost certainly the dominant constituent for the outer planets Jupiter, Saturn, Uranus, and Neptune. Ground based i.r.
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Primer for the Atmospheric Composition

2010
The objective of this chapter is to give the fundamentals of atmospheric composition and of air pollution. The terminology is also determined and a few key data are given.
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The Composition of Atmospheric Air

1951
For many reasons it is desirable to have a complete knowledge of the composition of the atmosphere as regards both the molecular species present and their absolute quantities. This applies not only to the main components, but also to rare species of polyatomic molecules whose importance in the radiation balance is often quite out of proportion to their
openaire   +2 more sources