SIMULATION OF KATABATIC WINDS AT MIZUHO STATION, ANTARCTICA

A new simulation method for solving dynamic equations for stationary katabatic wind is suggested by the assumption that the turbulent exchange coefficient is a function of height and the effect of the cold sloping surface is a multinomial function of height. Calculated wind profiles agree with observational data at Mizuho Station, Antarctica.

RADIATION BALANCE AND TURBULENT FLUX CHARACTERISTICS OVER MIZUHO STATION IN ANTARCTICA

In this paper,by using measurements in micrometeorology and radiation balance in the surface layer(Yamanouchi et al.,1981;Wada et al.,1981;Ishikawa et al.,1982;Ohata et al.,1983),we have analyzed the diurnal and annual varia- tion characteristics of radiation balance in spring,summer,autumn and winter,and calculated the momentum flux and sensible heat flux with the aerodynamic method and profile gradient alternate method in different seasons.We have also obtained the diurnal variation characters of the latent heat flux from the equation for energy balance.The results from the calculation are compared.Finally,the relationship between the turbulent heat and momentum exchange coefficient and the diurnal variation of the Richardson number is discussed.

南极瑞穗站辐射平衡及湍流通量特征

本文利用南极瑞穗站１９７９—１９８０年近地面层微气象及辐射平衡等观测资料，分析了春、夏、秋和冬季辐射平衡分量的日、年变化特征，采用空气动力学方法和廓线梯度迭代法计算了不同季节的动量通量、感热通量和由能量平衡方程得到的潜热通量的日变化特征，并对计算结果进行了比较。文中还对湍流热量交换系数、湍流动量交换系数与理查孙数的日变化关系进行了讨论。

南极瑞穗站的辐射特征

本文利用1979～1980年南极瑞穗站太阳分光辐射,长波辐射及微气象观测资料,分析了辐射分量,地表和大气有效比辐射,大气分光有效透射比的年季变化;雪面反射率和分光散射辐射与太阳高度角的关系;分光散射辐射和总辐射之比与大气质量的关系。

南极瑞穗站上空动量和感热等湍流通量的观测研究

本文根据南极瑞穗站气温、风等平均廓线资料,利用相似理论通量一廓线关系计算得出了该站的湍流通量,并与西太平洋热带海域和北京地区湍流通量计算结果进行了比较。

南极瑞穗站大气光学特征研究

本文利用南极瑞穗站１９７９年太阳可见光波段直接辐射的分光测量和微气象观测资料￣［１－２］。分别计算了整层大气、分子大气、臭氧和气溶胶的散射和吸收所构成的光学厚度τｔ（λ）、τＲ（λ）、τ＿（０３）（λ）和τ＿ａ（λ）及埃斯屈朗浑浊度系数β和波长指数α，并与北京和拉萨的相应值进行了比较￣［３－５］。文中对波长指数和埃斯屈朗浑浊度系数及整层大气垂直光学厚度与大气稳定度参数、湍流热通量的关系也进行了讨论。

南极瑞穗站太阳分光辐射及大气透明状况

本文利用１９７９年—１９８０年南极瑞穗站太阳分光辐射资料￣［１－２］。统计分析了其太阳分光辐射特征及大气透明状况。初步结果表明：瑞穗站虽然地处高纬，因大气洁净仍有很强的太阳直接辐射能量；由于雪面的高反射率及大气的多次反射使得散射较大；直接太阳辐射、总辐射和反射辐射与ｓｉｎｈ有较好的线性关系；散射辐射及与总辐射比与太阳高度角和大气质量有关。文中还计算了瑞穗站的大气透明度系数，并与拉萨和北京的大气透明系数进行了比较。