Visualization of water vapor distribution in the lower atmosphere using two lidars

Water vapor distribution in the lower atmosphere was observed using two optical lidars (ceilometer) set up at the distance of 3.1 km. Range height indicator (RHI) display was constructed from two time series data measured by each lidar. The instruments were also included small vertical radar and snowfall gauge. All the data were displayed on the same coordinate system to compare the profiles with time synchronization. To examine horizontal distribution of water vapor (cloud) widely, conventional weather radar was also used. Combination of all these instruments and methods will be potent system for understanding lower atmospheric structure.