A:
Arctic Report Card - A timely source for clear, reliable and concise environmental information on the current state of the Arctic relative to historical time records. [U.S. Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

Atmospheric Science and Global Change - Conducts research to increase our understanding of meteorological, chemical, physical and thermodynamic processes and phenomena in the troposphere [U.S. Department of Energy (DOE), Pacific Northwest National Laboratory (PNNL)]

Aviation Weather Center - National source for aviation weather information. This site provides warnings of hazardous condition for operational aviation forecasts and analyses of relevant atmospheric variables. [U.S. Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

C:
Carbon Dioxide Information Analysis Center (CDIAC) and the World Data Center for Atmospheric Trace Gases - Information on the greenhouse effect and global climate change [U.S. Department of Energy (DOE), Oak Ridge National Laboratory (ORNL)]

E:
Energy and Environment at Lawrence Livermore - Pursues programs and performs key research in water and environment, energy, carbon and climate, the national nuclear waste repository, and aspects of homeland and national security. [U.S. Department of Energy (DOE), Lawrence Livermore National Laboratory (LLNL)]

G:
Goddard Laboratory for Atmospheres - Advancing knowledge and understanding of the atmospheres of the Earth and other planets [National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC)]

N:
NASA - Space-Based Measurements of Ozone and Air Quality in the Ultraviolet and Visible - Provides information, data, and images about Earth's ozone, aerosols, reflectivity, and erythemal UV [National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC)]

NOAA Earth System Research Laboratory - Broad and comprehensive understanding of the Earth system comprised of physical, chemical and biological processes [U.S. Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

National Center for Atmospheric Research (NCAR) - Serves as a focus for research on atmospheric and related science problems to understand the earth system, including climate change, weather, and the impacts of all of these components on human societies [U.S. National Science Foundation (NSF)]

O:
Ozone Depletion - Includes information on the science, regulations, methyl bromide, and the UV index [U.S. Environmental Protection Agency (EPA)]

Ozone Layer Protection - Information about the science of ozone depletion, EPA's regulatory approach to protecting the ozone layer, alternatives to ozone-depleting substances, and sun safety. [U.S. Environmental Protection Agency (EPA)]

R:
Research Aircraft Facility at PNNL - Available for research to understanding atmospheric processes as they relate to the global environment [U.S. Department of Energy (DOE), Pacific Northwest National Laboratory (PNNL)]

W:
William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) - Research is on focused on developing a molecular-level understanding of the physical, chemical and biological processes that underlie the most critical environmental issues [U.S. Department of Energy (DOE), Pacific Northwest National Laboratory (PNNL)]