1. Bai, S., Liu, Q., Wu, H., and Wang, Y., 2001. Relation of ice conditions with climate change in the Bohai Sea and the northern Huanghai Sea. Acta Oceanologica Sinica, 23(5): 33–41 (in Chinese with English abstract).
2. Bai, X. Z., Wang, J., Liu, Q. Z., Wang, D. X., and Liu, Y., 2011. Severe ice conditions in the Bohai Sea, China, and mild ice conditions in the great lakes during the 2009/10 winter: Links to El Niño and a strong negative Arctic Oscillation. Journal of Applied Meteorology and Climatology, 50: 1922–1935.
3. Cavalieri, D. J., Parkinson, C. L., Gloersen, P., and Zwally, H. J., 1996. Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data Version 1. NASA National Snow and Ice Data Center Distributed Active Archive Center. Boulder, DOI: https://doi.org/10.5067/8GQ8LZQVL0VL.
4. Geng, S. Q., and Wang, X., 2002. Features of weather and climate in winter of 2001–2002 and its effect on sea ice in Bohai. Marine Forecasts, 20(2): 38–47 (in Chinese with English abstract).
5. Geng, S. Q., Wang, Y. L., and Bai, S., 2001. The affection of the variation of the atmospheric general circulation in the northern hemisphere in the winter 2000/2001 on the climate and sea ice in the Bohai Sea. Marine Forecasts, 18(3): 25–33 (in Chinese with English abstract).