Remote measurement of trace gases with the JPL laser absorption spectrometer

Extensive data from large regions are needed as a basis for the study of anthropogenic trace gases in the troposphere. The need arises, therefore, for an instrument which is capable to monitor rapidly the atmosphere in a region. The present investigation is concerned with the results of efforts to develop an instrument which is capable of remotely measuring gases in the troposphere. The Laser Absorption Spectrometer (LAS) was designed for use in aircraft, and was employed to measure tropospheric ozone distribution since 1977. Attention is given to a description of the LAS instrument, the theoretical basis of instrument operation, LAS measurement programs, the results of the LAS development program, and future work.