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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.
Photo of Jeff Snider (on the left) in the field with two graduate students
Image Courtesy of Jeff Snider

Dr. Jeff Snider

I am a university professor involved in studies of the concentration and type of particles contained within clouds. It is important to know these things in order to say how often clouds produce precipitation and to determine how much sunlight clouds reflect. Both precipitation and sunlight reflection influence the planet's climate and weather.

My training was in chemistry, and that background translated into an interest in chemical cycles of nutrients and the interaction of nutrient cycles with the hydrological cycle. Later on, I worked with a physicist who studied the atmospheric cycles of fixed nitrogen compounds (ammonia and nitric acid). That collaboration set a pattern for subsequent studies of the chemistry of sulfur compounds, again with an emphasis on how the atmospheric sulfur cycle interacts with the hydrological cycle.

Last modified October 24, 2008 by Randy Russell.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA