Abstract

Newly developed quantum cascade laser spectroscopic instrumentation allows high precision measurements of atmospheric trace gases, including measurements of small fractional (<10<sup>-3</sup>) changes in stable gases (e.g. N<sup>2</sup>O), and isotopic ratios (e.g.<sup>13</sup>CO<sup>2</sup>/<sup>12</sup>CO<sup>2</sup>,<sup>13</sup>CH<sup>4</sup>/<sup>12</sup>CH<sup>4</sup>).

© 2010 OSA

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