[1] [1] Rossow W B, Schiffer R A. ISCCP cloud data products [J].B. Am. Meteorol. Soc., 1991, 72(1): 2-20.

[2] [2] Yang Chengwu, Liu Wenqing, Zhang Yujun. Automatic inversion algorithm of cloud cover of Laser ceilometers [J].Laser & Optoelectronics Progress, 2012, 49(3): 030102(in Chinese).

[3] [3] Tao Fa, Ma Shuqing, Qin Yong,et al.. Cloud base height measurement methods based on dual-camera stereovision [J]. Journal of Applied Meteorological Science, 2013, 24(3): 323-331(in Chinese).

[4] [4] Long C N, Sabburg J, Calbó J. Retrieving cloud characteristics from ground-based daytime color all-sky images [J].J. Atmos. Ocean. Tech., 2006, 23(5): 633-652.

[5] [5] Yamashita M, Yoshimura M, Nakashizuka T. Cloud cover estimation using multitemporal hemisphere imageries [C].Proc. XXXV Congress of the International Society for Photogrammetry and Remote Sensing (ISPRS04), 2004: 818-21.

[6] [6] Young T. The Bakerian lecture: On the theory of light and colours [J].Philos. Trans. R. Soc. Lon., 1802, 92: 12-48.

[7] [7] Souza-Echer M, Pereira E, Bins L, Andrade M. A simple method for the assessment of the cloud cover state in high-latitude regions by a ground-based digital camera [J].J. Atmos. Ocean. Tech., 2006, 23(3): 437-447.

[8] [8] Young T. The Bakerian lecture: on the theory of light and colours [J].Philos. Trans. R. Soc. Lon., 1802, 92: 12-48.

[9] [9] Liu Hongxun, Li Taiyu.The Guide of Meteorological Instruments and Observation Method [M]. Beijing: China Meteorological Press, 1992(in Chinese).