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Sensor web simulation investigates technique to improve prediction of pollution across the globe

sor measurements can then be fed back into the computer model to improve the accuracy of the forecast. Talabac's team hopes to illustrate how such a model-driven sensor web could be used to enhance current measurement techniques, and bring to bear multiple complementary instruments to respond to rapidly changing environmental conditions.

"These simulations fall into the category of 'proof of concept,' to assess the feasibility of what is also planned for the next generation observing systems to enable real, full-fledged sensor web measurements," explained Talabac. "We hope to demonstrate that such an approach, or 'targeted intelligent data collection techniques,' can bring about more efficient use of our Earth observation satellites and their sensors."

In September 2005, Talabac's team will use an atmospheric chemistry computer model to predict global CO distribution. The team will also make measurements using Aura's Tropospheric Emission Spectrometer (TES), at key locations to improve the model prediction. In the future the team hopes to be able to use their prototype software to recommend regions where the TES instrument could be commanded to look and make real measurements at key locations predicted by the model.

"Our goal here is improve our ability to monitor and assess the Earth's environment," Talabac added. "With the sensor web, policy and decision makers will have access to the most useful and timely information available to help maintain a high quality of life and to potentially save lives."


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Source:NASA/Goddard Space Flight Center--EOS Project Science Office


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