Atmospheric Brown Cloud (ABC) project


Creation of the Atmospheric Brown Cloud (ABC) project, supported by the United Nations Environment Programme (UNEP), based on observations of polluted air over the Himalayas.

Within the ABC project, scientists came to a better understanding of sources and consequences of atmospheric brown clouds, which are mainly composed of particulate matter like black carbon. Phase II of the project consists of long-term monitoring of atmospheric brown clouds and the expansion of the project to other regions.

The first impact assessment report, Atmospheric Brown Clouds: Regional Assessment Report with Focus on Asia (2008), covers the scientific background of atmospheric brown clouds, as well as an analysis of their impact on regional climate change, agriculture and human health. It especially features an analysis of the Asian Brown Cloud.

The report, as well as further information on the project, are available on following website.

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