Related topics: upper atmosphere

Researchers advancing understanding of vital enzyme

Nitrogenases, the enzymes responsible for converting atmospheric nitrogen into the nitrogen-based compounds used by living things, have been a major focus of chemistry research for decades because of the pivotal role that ...

Digesting hydrocarbons

Volatile organic compounds can be found in the air—everywhere. A wide range of sources, including from plants, cooking fuels and household cleaners, emit these compounds directly. They also can be formed in the atmosphere ...

Africa: An air pollution wildcard

For the past four years, atmospheric scientists have been flying around the world with NASA on a mission to analyze pollution chemistry in the air and oceans. The NASA Atmospheric Tomography Mission or ATom, which flew its ...

Simple, effective Earth-system modeling

To assess long-range risks to food, water, energy and other critical natural resources, decision-makers often rely on Earth-system models capable of producing reliable projections of regional and global environmental changes ...

Vertical measurements of air pollutants in urban Beijing

Severe haze episodes with surprisingly high concentrations of fine particles (PM2.5) still occur in fall and winter seasons in Beijing, although the air quality has been improved in recent years.

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