CALCULATED HYDROXYL A(2)SIGMA-]X-2-PI(0,0) BAND EMISSION RATE FACTORSAPPLICABLE TO ATMOSPHERIC SPECTROSCOPY

A calculation of the A(2) Sigma --> X-2 Pi (0, 0) band emission rate f actors and line center absorption cross sections of OH applicable to i ts measurement using solar resonant fluorescence in the terrestrial at mosphere is presented in this paper. The most accurate available line parameters have been used. Special consideration has been given to the solar input flux because of its highly structured Fraunhofer spectrum . The calculation for the OH atmospheric emission rate factor in the s olar resonant fluorescent case is described in detail with examples an d intermediate results. Results of this calculation of OH emission rat e factors for individual rotational lines are, on average, 30% lower t han the values obtained in an earlier work. (C) 1997 Elsevier Science Ltd.