Seasonality of snow accumulation at Mount Wrangell, Alaska, USA
Seasonality of snow accumulation at Mount Wrangell, Alaska, USA
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DOI：
10.3189/002214308784886081
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发表时间：
2008-03
影响因子：
3.4
通讯作者：
Syosaku Kanamori;C. Benson;M. Truffer;S. Matoba;D. Solie;T. Shiraiwa
中科院分区：
文献类型：
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作者：
Syosaku Kanamori;C. Benson;M. Truffer;S. Matoba;D. Solie;T. Shiraiwa
在美国阿拉斯加州的兰格尔山（62° N，144° W; 4100 m a.s.l.）的火山口顶，我们记录了安装在一个特殊建造的塔上的温度传感器的埋置时间，以确定个别风暴期间的积雪。在2005年6月至2006年6月的累积年度内。实验表明，大部分的积累发生在幕式的大风暴，和总积累的一半是在夏末交付。个别事件发生的时间与最近的太平洋沿岸气象站科尔多瓦（东南偏南200公里）记录的逆风风暴有很好的相关性，尽管事件的强度只有很差的相关性。因此，兰格尔山的积雪似乎是天气尺度区域天气系统的反映。兰格尔山顶（>2.5 m w.e.）超过了科尔多瓦的降水量虽然在该地区，兰格尔山顶峰的个别风暴的积累与科尔多瓦的降水事件之间的直接关系可能是独一无二的，但它对解释兰格尔山获得的冰芯是有用的。这在这里尤其如此，因为高的累积速率允许岩心内的高时间分辨率。
Abstract We recorded the burial times of temperature sensors mounted on a specially constructed tower to determine snow accumulation during individual storms in the summit caldera of Mount Wrangell, Alaska, USA, (62° N, 144° W; 4100 m a.s.l.) during the accumulation year June 2005 to June 2006. The experiment showed most of the accumulation occurred in episodic large storms, and half of the total accumulation was delivered in late summer. The timing of individual events correlated well with storms recorded upwind, at Cordova, the closest Pacific coastal weather station (200 km south-southeast), although the magnitude of events showed only poor correlation. Hence, snow accumulation at Mount Wrangell appears to be a reflection of synoptic-scale regional weather systems. The accumulation at Mount Wrangell’s summit (>2.5 m w.e.) exceeded the precipitation at Cordova. Although the direct relationship between accumulation of individual storms at the summit of Mount Wrangell and precipitation events at Cordova may be unique in the region, it is useful for interpreting ice cores obtained on Mount Wrangell. This is especially the case here because the high rate of accumulation allows high time resolution within the core.