TY - GEN
T1 - Cloud vertical structures detected by lidar and its statistical results at HeRO site in hefei, China
AU - Sun, Lu
AU - Liu, Dong
AU - Wang, Zhien
AU - Wang, Zhenzhu
AU - Wu, Decheng
AU - Bo, Guangyu
AU - Wang, Yingjian
N1 - Publisher Copyright:
© 2014 SPIE.
PY - 2014
Y1 - 2014
N2 - Extensive studies have illustrated the importance of obtaining exact vertical structures of clouds and aerosols for satellite and relevant climate simulations. However, challenging exists, for example, in distinguishing clouds from aerosols at times. Accurate cloud vertical profiles are mainly determined by cloud bases and heights. Based on the ground-based lidar observations in Hefei Radiation Observatory (HeRO), the vertical structures of clouds and aerosols in Hefei area(31.89° N, 117.17°E) during May 2012-May 2014 have been investigated. The results show that the cloud fraction in the autumn and winter is less than that in the summer and spring, and is largest in the spring followed by the summer. The cloud fractions in the autumn and winter are comparable. The low cloud accounts for the most portion of the total. Compared with the cloud of the other heights, the high cloud is the least in the winter. Nearly 50% of the total vertical profiles can be detected by lidar as clouds and the proportion of the cloud of different heights seems to be stable annually. The fraction of low cloud is nearly 45%, medium cloud is nearly 35%, and high cloud is nearly 20%. In comparison with the results derived from CALIPSO, it is found that high cloud is usually missed for the ground-based lidar, while low cloud is usually omitted for the satellite observations. A combination of ground-based and space-borne lidar could lead to more reliable results. Further analysis will be performed in future studies.
AB - Extensive studies have illustrated the importance of obtaining exact vertical structures of clouds and aerosols for satellite and relevant climate simulations. However, challenging exists, for example, in distinguishing clouds from aerosols at times. Accurate cloud vertical profiles are mainly determined by cloud bases and heights. Based on the ground-based lidar observations in Hefei Radiation Observatory (HeRO), the vertical structures of clouds and aerosols in Hefei area(31.89° N, 117.17°E) during May 2012-May 2014 have been investigated. The results show that the cloud fraction in the autumn and winter is less than that in the summer and spring, and is largest in the spring followed by the summer. The cloud fractions in the autumn and winter are comparable. The low cloud accounts for the most portion of the total. Compared with the cloud of the other heights, the high cloud is the least in the winter. Nearly 50% of the total vertical profiles can be detected by lidar as clouds and the proportion of the cloud of different heights seems to be stable annually. The fraction of low cloud is nearly 45%, medium cloud is nearly 35%, and high cloud is nearly 20%. In comparison with the results derived from CALIPSO, it is found that high cloud is usually missed for the ground-based lidar, while low cloud is usually omitted for the satellite observations. A combination of ground-based and space-borne lidar could lead to more reliable results. Further analysis will be performed in future studies.
KW - Clouds and aerosols
KW - Lidar
KW - Seasonal and interannual variations
KW - Vertical structure
UR - https://www.scopus.com/pages/publications/84922711978
U2 - 10.1117/12.2069068
DO - 10.1117/12.2069068
M3 - Conference contribution
AN - SCOPUS:84922711978
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Remote Sensing of the Atmosphere, Clouds, and Precipitation V
A2 - Im, Eastwood
A2 - Yang, Song
A2 - Zhang, Peng
PB - SPIE
T2 - Remote Sensing of the Atmosphere, Clouds, and Precipitation V
Y2 - 13 October 2014 through 15 October 2014
ER -