Cloud,atmospheric pressure,temperature,wind and humidity are fundamental parameters for numerical weather and predicting climate.International,some programs are implementing or have been implemented.Advice about our country developing spaceborne meteorologic lidar was provided:Nd∶YAG laser,frequency doubled and frequency tripled was used as optical source,atmospheric echo is received by telescope,using spectroscope technology,we can separate Mie backscatter from echo,and directly find Doppler shift and backscattering spectrum-broaden so as to acquire data about atmospheric aerosol,cloud,wind,temperature.Nd∶YAG laser pumping OPO lidar implement differential absorption technique to detect atmospheric vapor(humidity)distributing profile,and a lidar acquire atmospheric pressure with oxygen 761nm differential absorption technique.