【摘要】 利用2011—2013年巴音布鲁克高寒无人区的自动气象站资料,揭示了观测区域的气象条件,给出部分气象参数的变化特征。结果表明:(1)迎风坡盛行风向为东南风(SE)和北风(N),其中SE占35%,N占25%,N向风力集中4级以下,SE明显偏大,3级风比重15%,4级风比重7%,5级风比重4%;6级风比重1%。背风坡主导风向角度范围在247.5°~337.5°,风力基本在6级以下,3~5级风出现频率最高,6级及以上风力出现频率不足1%。(2)日平均气温≤-10℃日数所占观测总日数的百分比,其值分别为:0.0%(恰西)、44.5%(江布肯达坂)、9.8%(江巴口子)、15.1%(铁力买提达坂)。恰西、江布肯达坂、江巴口子、铁力买提达坂4站日平均相对湿度≥80%的频率分别为5.9%、18.4%、16.1%和22.6%。(3)换算得出恰西、江布肯达坂、江巴口子、铁力买提达坂观测期间10 m高度最大瞬时风速与小时平均风速分别为33.8/27.9、41.0/27.3、25.7/17.7、34.0/17.2 m/s。更多还原

【Abstract】 By use of data obtained from the automatic meteorological station in the Tianshan Mountains during 2011-2013,the climatic features of the observational region are revealed and the threshold of some meteorological parameters are given.The results are as follows:（1） The Southeast （SE） prevailing wind direction in windward slope is accounted for 35% of total wind direction,and the North（N） wind direction is accounted for 25% of total wind direction.The N wind is below 4levels of wind,SE is significantly larger.The proportion of different levels wind are 15%（3 level）/7%（4 level）/4%（5 level） and 1%（6 level）,respectively.The prevailing wind angle in the leeward side is between 247.5° and 337.5°,and the wind force is below 6 levels of wind,the proportion of above strong breeze is almost 1%.While the proportion of 3-5 levels of wind accounts for large percentage.（2） The percentages of the averaged daily temperature ≤-10 ℃ accounted for the total observational days are 0%（Charsi）,44.5%（Jiangbukendaban）,9.8%（Jiangbakouzi）and 15.1%（Tielimaitidaban）respectively.The frequency of the averaged relative humidity which is over 80% from these stations are 5.9%、18.4%、16.1% and 22.6%respectively.（3） Converting it to maximum instantaneous wind speed and Hourly averaged wind speed at10 m high during observational period are 33.8/27.9 m·s^-1,41.0/27.3 m·s^-1,25.7/17.7m·s^-1 and 34.0/17.2 m·s^-1 respectively.更多还原