A:
AGRICOLA (AGRICultural OnLine Access) - Search a bibliographic database of citations to the literature of agriculture [Department of Agriculture (USDA), Agriculture Research Service (ARS), National Agricultural Library (NAL)]

Ask Dr. Global Change - Assists researchers, students, educators, decision makers and the general public find information and data relevant to global environmental change [Multiple agencies involved]

Atmospheric Modeling - Partnership between EPA and NOAA to Develop and evaluate predictive models on all spatial and temporal scales for assessing changes in air quality and air pollutant exposures, as affected by changes in ecosystem management and regulatory decisions. [Multiple agencies involved, Environmental Protection Agency, National Oceanic and Atmospheric Administration]

Atmospheric Modeling Research. - This page contains a list of links to pages describing atmospheric modeling research projects. [Environmental Protection Agency (EPA)]

C:
California Climate Change Portal - Combines information on the impacts of climate change on California and the state's policies relating to global warming with the California Climate Change Center, a virtual research and information website [Ad Hoc Organizations, California Energy Commission]

Center for Climate Change and Environmental Forecasting - The focal point in the DOT of technical expertise on transportation and climate change [Department of Transportation (DOT)]

Climate Change and Carbon Management - Conducts research to increase the scientific foundation for prediction, impact assessment, and prevention of climate change, with projects in carbon sequestration in geologic, oceanic, and terrestrial systems [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

Climate VISION - A public-private partnership initiative launched by the Department of Energy to reduce green house gas intensity. [Department of Energy (DOE); Multiple agencies involved]

D:
Deserts - Information on the effects of global warming on deserts [Environmental Protection Agency (EPA)]

E:
EPA Climate Change Site - Offers comprehensive information on the issue of climate change in a way that is accessible and meaningful to all parts of society – communities, individuals, business, states and localities, and governments [Environmental Protection Agency (EPA); Environmental Protection Agency (EPA)]

ESRL - Global Monitoring Division - Conducts research related to atmospheric constituents that are capable of forcing change in the climate of the Earth or that may deplete the ozone layer [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

Earth’s Water Cycle in a Changing Climate - Webcast of a presentation at the Library of Congress by Peter Hildebrand, chief of the Hydrospheric and Biospheric Sciences Laboratory at NASA Goddard Space Flight Center. [Library of Congress, Science, Technology and Business Division]

F:
FrogWeb: Amphibian Declines & Deformities - Provides information about recent global declines and deformities among amphibian populations. [Department of the Interior, U.S. Geological Survey (USGS), National Biological Information Infrastructure (NBII)]

G:
Geosciences - Research programs support research and related activities that advance fundamental understanding of dynamic physical, biological, and socioeconomic systems as well as interactions among those systems [National Science Foundation (NSF)]

Global Change Research Program - Research on understanding the potential consequences of climate variability and change on human health, ecosystems, and socioeconomic systems [Environmental Protection Agency (EPA)]

Global Warming - Presents information on the very broad issue of climate change and global warming [Environmental Protection Agency (EPA)]

Goddard Institute for Space Studies (GISS) - Prediction of atmospheric and climate changes in the 21st century based on research of global datasets [National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC)]

H:
Human Exposure & Atmospheric Sciences. - Human Exposure & Atmospheric Sciences, of the National Exposure Research Laboratory, conducts research to characterize pollutant exposures from the pollutant source to the exposed person or receptor. [Environmental Protection Agency (EPA), National Exposure Research Laboratory (NERL)]

N:
NOAA Unmanned Aircraft System - This site provides information about measures that effect the world that can only be discovered via unmanned aircrafts. The system established test bed research and operations for climate change, hurricanes, Pacific storms, fisheries enforcement, and protection of marine sanctuaries and endangered species. [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

National Activities of the USGS Biological Resources Discipline - Links to national programs, including biomonitoring, bird banding, gap analysis, integrated taxonomy, breeding birds, nonindigenous species, and vegetation mapping. [Department of the Interior, U.S. Geological Survey (USGS)]

National Exposure Research Laboratory (NERL) - NERL conducts research and development that leads to improved methods, measurements and models to assess and predict exposures of humans and ecosystems to harmful pollutants and other conditions in air, water, soil, and food. [Environmental Protection Agency (EPA), National Exposure Research Laboratory (NERL)]

O:
ORNL Environmental Sciences - Conducts research on earth sciences, ecological management, environmental data science and systems, microbial systems biology, social sciences, and terrestrial ecology [Department of Energy (DOE), Oak Ridge National Laboratory (ORNL)]

U:
Ultraviolet Monitoring Program: UV-Net. - The EPA UV-Net Program operates and maintains a network of Brewer spectrophotometers throughout the United States. The UV monitoring under this program is coordinated with measurement programs of other U.S. Federal agencies. [Environmental Protection Agency (EPA)]