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首页> 外文会议>International Laser Radar Conference >ARCTIC CLOUD FORCING DETERMINED BY LIDAR CLOUD MEASUREMENTS AND BROADBAND SURFACE RADIOMETERS
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ARCTIC CLOUD FORCING DETERMINED BY LIDAR CLOUD MEASUREMENTS AND BROADBAND SURFACE RADIOMETERS

机译：北极云强迫由LIDAR云测量和宽带表面辐射计确定

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Lidar measurements obtained over the Arctic Ocean for a one year period, along with radiometers and atmospheric temperature soundings, revealed previously undocumented properties of Arctic clouds and their radiative impact on the sea ice surface over an annual cycle. The lidar cloud observations revealed the predominance of liquid water clouds in all seasons throughout the polar year and the strong radiative effect clouds in liquid phase impart onto the surface. Lidar measurements were also used to characterize diamond dust. These observations showed that diamond dust, over the Western Arctic Ocean region, had a much lesser effect on the surface radiation than previously believed and modeled. When compared to surface observer log notes the lidar data showed that surface observers had incorrectly coded diamond dust events ～ 45% of the time. These miscoded events occurred almost exclusively under conditions with poor illumination (December through March). In 95% of the miscoded diamond dust events, lidar revealed the presence of thin liquid water clouds precipitating ice crystals down to the surface. In general, lidar observations of clouds in liquid versus ice phase and their location in the atmosphere have proven to be a critical observation in the polar regions for understanding and modeling the surface heat budget.
机译：在北冰洋上获得的LIDAR测量为一年的时间，以及辐射仪和大气温度探测，揭示了北极云的未记录性质及其在年度周期上对海冰表面的辐射撞击。激光葡萄球云观察显示液体云层在整个季节的所有季节和液相中的强烈辐射效果云赋予表面的强烈辐射效果云。 LIDAR测量还用于表征金刚石灰尘。这些观察结果表明，在西北冰海洋地区的钻石尘埃对表面辐射的影响大得多，而不是先前认为和建模。与表面观察器日志相比，LIDAR数据显示表面观察者的钻石灰尘事件〜45％的时间不正确。这些错误等加权事件几乎完全发生在较差的照明（12月至3月）的条件下。在95％的错误钻石尘埃尘埃赛中，激光雷达揭示了薄液水云的存在，将冰晶沉淀到表面。通常，在液体与冰相中的云层的激光雷达观察和它们在大气中的位置已经证明是在极地地区的临界观察，以了解和建模地表热预算。

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