Lidar ozone measurements in the marine and terrestrial atmosphere from the ground to the tropopause

A conventional differential-absorption lidar and a Raman lidar have been used for ozone concentration profiling. Measurements over land show such unusual phenomena as a nighttime ozone maximum over Munich, a mass of ozone creeping up a valley to the top of Mount Schauinsland, and a polar stratospheric cloud as far south its Geesthacht, located 54/spl deg/N, with corresponding reduction of the ozone columnar density. Ozone along a 30/spl deg/W transect over the Atlantic Ocean is correlated with wind speed when the wind blows from the continents, but anticorrelated when the air masses are essentially oceanic in origin. A conspicuous absence of ozone in cirrus clouds needs further investigation as to whether the effect is advective or reactive in nature; for this purpose a new technique is proposed.