| タイトル | Impact of Vertical Wind Shear on Tropical Cyclone Rainfall |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150002572 |
| 著者（英） | Marchok, Tim; Cecil, Dan |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2014-12-02 |
| 言語 | eng |
| 内容記述 | While tropical cyclone rainfall has a large axisymmetric component, previous observational and theoretical studies have shown that environmental vertical wind shear leads to an asymmetric component of the vertical motion and precipitation fields. Composites consistently depict a precipitation enhancement downshear and also cyclonically downwind from the downshear direction. For consistence with much of the literature and with Northern Hemisphere observations, this is subsequently referred to as "Downshear-Left". Stronger shear magnitudes are associated with greater amplitude precipitation asymmetries. Recent work has reinforced the prior findings, and explored details of the response of the precipitation and kinematic fields to environmental vertical wind shear. Much of this research has focused on tropical cyclones away from land, to limit the influence of other processes that might distort the signal related to vertical wind shear. Recent evidence does suggest vertical wind shear can also play a major role in precipitation asymmetries during and after landfall. |
| NASA分類 | Meteorology and Climatology |
| レポートNO | M14-4117 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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