Abstract

The application of UV lidar to measure isoprene concentrations for environmental studies has been investigated. With a hard target lidar system at 223  nm, isoprene mixing ratios above eucalyptus trees were measured with a sensitivity of about 1 ppbv. Results over a long timescale were compared with an existing model of isoprene emission for a wide range of temperature and sunlight values. Fast time dependent results yielded a leaf emission rate of 25   μg  g1hour1, consistent with emission from other eucalyptus species. Requirements for development of the system for range resolved isoprene number density measurements using atmospheric backscatter lidar are discussed.

© 2007 Optical Society of America

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