Institute for Atmospheric Physics - Tracegases in the atmosphere

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Tracegases in the atomsphere

	Sources and sinks of tracegases Gaseous and particulate trace constituents effect the earth's radiative budget and therefore climate. Concerning trace gases the directly effective greenhouse gases like carbon dioxide (CO2), methane (CH4) and dinitrogen oxide (N2O), and those having an indirect influence on climate, as carbon monoxide (CO) and nitrogen oxides (NO, NO2), are distinguished.
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	Interaction of particles with clouds Clouds play an important role in the radiation balance of the atmosphere and the climate modifications resulting from human activities. Due to the complexity of the formation processes and the microphysical properties in particular of thin ice clouds their contribution to the greenhouse effect is still not well known.
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Water vapour and ozone in the atmosphere

Identification, interpretation and quantitative analysis of changes of atmospheric chemical species (gases), in particular water vapour and ozone, but also of UV radiation and of climate are central tasks of atmospheric research. The concentration of stratospheric ozone has decreased significantly during the last two decades, especially over the Antarctic in spring time (ozone hole).

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Sources and sinks of tracegases

Interaction of particles with clouds

Water vapour and ozone in the atmosphere