Modulation of Sea Ice Melt Onset and Retreat in the Laptev Sea by the Timing of Snow Retreat in the West Siberian Plain
Modulation of Sea Ice Melt Onset and Retreat in the Laptev Sea by the Timing of Snow Retreat in the West Siberian Plain
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西西伯利亚平原雪退时间对拉普捷夫海海冰融化开始和消退的调节
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
M. Serreze
中科院分区：
文献类型：
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作者：
A. Crawford;S. Horvath;J. Stroeve;R. Balaji;M. Serreze
近年来，人们对改进北极海冰状况的季节性预测越来越感兴趣，包括冰融化开始和消退的时间，特别是在区域范围内。本文探讨了区域海冰融化的发生和退缩之间的潜在联系在南部拉普捷夫海和陆地积雪退缩。过去的研究表明，欧亚大陆上积雪范围的变化会对北太平洋和北冰洋的区域大气环流模式产生重大影响。它表明，在这里，对于拉普捷夫海，早期融化的海冰开始和撤退的鼓励早期撤退的积雪覆盖在西西伯利亚平原。春季降雪提前会导致更大的起垄（例如，整个夏天，东西伯利亚海上空的500百帕）。这导致拉普捷夫海上空的暖湿气流更频繁地向南流动。这种关系可以提供适度的改善预测技能海冰融化的开始和撤退在南部拉普捷夫海的提前时间分别约为50和90天。在西西伯利亚平原的雪撤退的去趋势的时间序列解释了26和29%的去趋势的变化的海冰融化的开始和撤退的时间在南部拉普捷夫海，分别。
Recent years have seen growing interest in improving seasonal predictions of Arctic sea ice conditions, including the timing of ice melt onset and retreat, especially on the regional scale. This paper investigates potential links between regional sea ice melt onset and retreat in the southern Laptev Sea and retreat of terrestrial snow cover. Past studies have shown that variability of snow extent over Eurasia can substantially impact regional atmospheric circulation patterns over the North Pacific and Arctic Oceans. It is shown here that for the Laptev Sea, earlier melt onset and retreat of sea ice are encouraged by earlier retreat of snow cover over the West Siberian Plain. Earlier snow retreat in spring encourages greater ridging (e.g., at 500 hPa) over the East Siberian Sea through the summer. This results in more frequently southerly flow of warm, moist air over the Laptev Sea. This relationship could provide modest improvements to predictive skill for sea ice melt onset and retreat in the southern Laptev Sea at lead times of approximately 50 and 90 days, respectively. The detrended time series of snow retreat in the West Siberian Plain explains 26 and 29% of the detrended variance of the timing of sea ice melt onset and retreat in southern Laptev Sea, respectively.
利用被动微波海冰观测对九月北极海冰范围进行熟练的春季预报
DOI：
10.1002/2016ef000495
发表时间：
2017
期刊：
Earth's Future
影响因子：
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作者：
Petty A
通讯作者：
Petty A