LIDAR MEASUREMENTS OF STRATOSPHERIC TEMPERATURE DURING STOIC

Measurements of stratospheric temperature and density were acquired by the NASA/GSFC lidar during the Stratospheric Ozone Intercomparison Ca mpaign (STOIC) experiment at the Jet Propulsion Laboratory Table Mount ain Facility (TMF) (34.4 degrees N, 117.7 degrees W) in July and Augus t 1989. Lidar temperatures, obtained on 21 nights preceding and during this experiment, are compared with temperatures derived by radiosonde s, datasondes, Stratospheric Aerosol and Gas Experiment (SAGE II) sate llite experiment, and National Meteorological Center (NMC) analyses. R adiosondes were flown from the TMF site as well as from San Nicholas I sland (33.2 degrees N, 119.5 degrees W) located about 225 km southwest of TMF. Datasondes were deployed from Super-Loki rockets also launche d at San Nicholas Island. SAGE II satellite temperature measurements w ere made within 1000 km of the Table Mountain site. NMC temperature an alyses derived from the NOAA satellite measurements were interpolated to coincide in space and time with the lidar measurements. The lidar t emperatures, which were derived for altitudes between 30 and 65 km, we re within 2-3 K of the temperatures measured by the other sensors in t he altitude range 30-45 km. Between 30 and 35 km, lidar temperatures w ere about 2 K cooler than those obtained from the datasondes and the N MC analyses but were about 1-2 K warmer than those obtained from the r adiosonde, These differences may be due to the time difference between the measurements as well as possible nonnegligible aerosol scattering near 30 km. Near and above the stratopause the temperature difference s increased to 3-8 K. Lidar temperature profiles also show small-scale variations possibly caused by wave activity.