Abstract
Who would believe that a butterfly, by flapping its wings in Peru, could set off a chain of events leading to a monsoon thousands of miles away? This familiar notion from chaos theory may seem absurd even as it raises a worthy point: Everything around us is intimately connected. And by studying how broad forces in nature interact, we can construct predictions that offer great benefits to society. Now a global effort is under way to revolutionize our understanding of the Earth as an interconnected whole. The effort aims to integrate Earth observing capabilities based on satellites and in situ or ground-based sensors into a Global Earth Observation System of Systems (GEOSS). By uniting these systems, scientists hope to take the pulse of the planet, and in so doing, generate a range of environmental, economic, and health benefits. For instance, should the effort yield even a 1°F improvement in weather forecasting, power utilities can plan their daily output needs more accurately, resulting in an annual $1 billion electricity savings for consumers in the United States alone, according to the U.S. Environmental Protection Agency (EPA). Likewise, improved monitoring of air pollution, or better satellite mapping of habitats that harbor malaria, cholera, or West Nile virus, could save many lives by establishing warning systems for at-risk populations that might reduce exposure. A total of 54 countries, the European Union, and 33 international organizations have joined the GEOSS thus far, providing a welcome boost to the environmental reputation of its sponsor: the United States. The project is also the first project of its kind to get such high-level support, says Steve Goodman, chief of the Earth and Planetary Science Branch at the National Aeronautics and Space Administration (NASA) Marshall Space Flight Center. “I’ve never seen a program move at a pace like this with such a sustained effort,” says Gary Foley, who is director of the EPA National Exposure Research Laboratory. “It seems to be the right thing at the right time with the right leadership. It was what everyone seemed to be looking for.”
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