Abstract: In 2012/13 austral summer, the Chinese National Antarctica Research Expedition deployed an automatic weather station (AWS), to collect information regarding meteorological characteristics in Inexpressible Island for the candidate of new station. Parameters such as Air pressure, air temperature, relative humidity, wind speed and direction, solar radiation have been recorded for the past whole year. Based on these data and the historical data collected by United State and Italy, we evaluated the climate condition to provide basic environment for the other researches, which is also important for the safety of the future field explorers. The result shows that: (1) the annual mean air pressure in Inexpressible Island is 987.8 hPa, very close with in Zhongshan Station; (2) annual mean air temperature is -16.1 and the lowest air temperature is 39.3; (3) annual mean relative humidity is 42.1%, which implies low precipitation here; (4) the prevalent wind is coming from WNW and the wind speed is greater than 8 m s-1 during most of the year; however, the wind usually becomes weak during summer time and this is very beneficial for the supplement by Icebreakers; (5) the global radiation at Inexpressible Island (3342.8 MJ m-2) is obviously less than Zhongshan station, but there albedo is quite close with each other.

Key words: Antarctica, Victoria Land, meteorological parameter, climate characteristics