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CSL (formerly the Chemical Sciences Division (CSD) of the Earth System Research Laboratory) conducts fundamental research on the Earth's atmosphere in relation to key environmental issues that influence the health of the atmosphere. Our researchers play leading roles assessing the "state of the science" on topics including air quality, climate, and the stratosphere. For more information, the NOAA Science Council State of the Science Fact Sheets provide current and background information on a variety of NOAA products and services.
