The deep atmospheric boundary layer and its significance to the stratosphere and troposphere exchange over the Tibetan Plateau.

The deep atmospheric boundary layer and its significance to the stratosphere and troposphere exchange over the Tibetan Plateau.
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DOI:
10.1371/journal.pone.0056909
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Ma Y
Ma Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chen X;Añel JA;Su Z;de la Torre L;Kelder H;van Peet J;Ma Y

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在这项研究中,在2008年的区域无线电探空仪观测活动期间测量了青藏高原上空的大气边界层(ABL)的深度,发现比以前的测量结果更深。结果表明,在冬季天气晴朗的情况下,混合层的顶部可以高达5公里以上的地面(9.4公里以上的海平面)。测量还表明,ABL的深度是相当不同的三个不同的时期(冬季,季风爆发,季风季节)。深层混合层顶部的湍流可以上升到对流层上部。因此,轨迹分析证实,在冬季青藏高原的深ABL和低对流层顶之间存在相互作用。
In this study the depth of the atmospheric boundary layer (ABL) over the Tibetan Plateau was measured during a regional radiosonde observation campaign in 2008 and found to be deeper than indicated by previously measurements. Results indicate that during fair weather conditions on winter days, the top of the mixed layers can be up to 5 km above the ground (9.4 km above sea level). Measurements also show that the depth of the ABL is quite distinct for three different periods (winter, monsoon-onset, and monsoon seasons). Turbulence at the top of a deep mixing layer can rise up to the upper troposphere. As a consequence, as confirmed by trajectory analysis, interaction occurs between deep ABLs and the low tropopause during winter over the Tibetan Plateau.
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