Title :
Low Relative Humidity Layer Observation with Micro Pulse Lidar in Qingdao
Author :
Zhang, Bin ; Guo, Jinjia
Author_Institution :
Coll. of Inf. Sci. & Technol., Qingdao Univ. of Sci. & Technol., Qingdao, China
Abstract :
A low backscattering intensity layer with clear boundary was found with an eye-safe, compact Micro Pulse Lidar (MPL) system in Qingdao (120.33, 36.07). This layer was also found from the energy monitor channel signal of the High Resolution Spectral Lidar (HRSL) system. From radiosonde data we found this layer had low relative humidity (RH) and the RH kept as a constant. Also the radiosonde data showed there was an obvious temperature inversion in low atmosphere which blocked aerosol transport. Jinan(117.55, 36.70) in Shandong province, China and west coast of Korea were two low RH centers. Similar phenomena were also found in many other days, especially in autumn. But the reasons caused to the low RH area need further research.
Keywords :
aerosols; atmospheric boundary layer; atmospheric humidity; atmospheric measuring apparatus; optical radar; radiosondes; remote sensing by laser beam; China; High Resolution Spectral Lidar system; Jinan; Korea; Micro Pulse Lidar; Qingdao; Shandong province; aerosol transport; energy monitor channel signal; low backscattering intensity layer; low relative humidity layer; radiosonde data; temperature inversion; Aerosols; Atmosphere; Backscatter; Energy resolution; Humidity; Laser radar; Monitoring; Ocean temperature; Optical scattering; Remote sensing; lidar; radiosonde data; relative humidity; satellite image;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.513
