Analysis of Cold Airmass Temperature Modification across the U.S. Great Plains as a Consequence of Snow Depth and Albedo
Analysis of Cold Airmass Temperature Modification across the U.S. Great Plains as a Consequence of Snow Depth and Albedo
复制标题
雪深和反照率对美国大平原冷气团温度变化的分析
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
D. Leathers
中科院分区：
文献类型：
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作者：
A. Ellis;D. Leathers
雪覆盖的存在已被证明通过地球对流层的辐射效应来改变大气条件。近几十年来，由于对全球环境潜在变化的关注，积雪引起了广泛关注，而全球环境的潜在变化可能因积雪的存在或不存在而加剧。因此，在天气和气候预测模式中更加强调积雪的表示。本文研究了冬季美国大平原冷气团中积雪反照率和积雪深度对地表气温变化的影响。通过对一维积雪模型的适应，从地表和低层大气的热平衡方程推导出冷气团核心的热特性。该方法是基于一个前提，即冷空气团的核心可以被认为是均匀的，不受…
Abstract The presence of snow cover has been shown to modify atmospheric conditions through much of the earth’s troposphere due to its radiative effects. Snow cover has garnered much attention in recent decades as a result of concerns associated with potential changes in the global environment that may be intensified by the presence or absence of a snow cover. As a result, a greater emphasis has been placed on the representation of snow cover in weather and climate prediction models. This study investigates the effects of snow albedo and snow depth on the modification of surface air temperatures within cold air masses moving across the U.S. Great Plains in winter. Through the adaptation of a one-dimensional snowpack model, the thermal characteristics of the core of a cold air mass were derived from the equation governing the heat balance between the surface and the lower atmosphere. The methodology was based on the premise that the core of a cold air mass may be considered homogeneous and not subject to a...