Taking the Pulse of Greenhouse Gases

NASA's King Air B200 aircraft was flown to test the triple-pulse Integrated Path Differential Absorption (IPDA) lidar, a first-of-its-kind instrument that measures atmospheric carbon dioxide (CO2) and water vapor (H2O).

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Langley researchers, from left, Mulugeta Petros, Upendra Singh and Tamer Refaat inside the King Air B200 aircraft on which they recently tested a new triple-pulse lidar that can simultaneously and independently measure carbon dioxide and water vapor, two powerful greenhouse gases. Credits: NASA/David C. Bowman