Diurnal Radiation Cycle Impact on the Pregenesis Environment of Hurricane Karl (2010)
Diurnal Radiation Cycle Impact on the Pregenesis Environment of Hurricane Karl (2010)
复制标题
DOI：
10.1175/jas-d-13-0116.1
复制
发表时间：
2014-03
影响因子：
3.1
通讯作者：
C. Melhauser;Fuqing Zhang
中科院分区：
文献类型：
--
作者：
C. Melhauser;Fuqing Zhang
摘要通过允许对流的集合和敏感性试验，研究了辐射日变化对2010年卡尔飓风前期环境的影响。结果表明，辐射日极值对生成前的环境稳定性和深层湿对流的强度有很大的影响。夜间通过辐射冷却造成的局部和大尺度环境的不稳定可能会促进深层湿对流，并增加其生成潜力，从而可能增强由此产生的热带气旋的强度。修改后的长波和短波辐射实验发现，热带气旋的发展是非常敏感的加热和冷却的周期性循环，抑制形成在白天只有和无辐射的实验和更快的加强与控制相比，只有夜间的实验。
AbstractThrough convection-permitting ensemble and sensitivity experiments, this study examines the impact of the diurnal radiation cycle on the pregenesis environment of Hurricane Karl (2010). It is found that the pregenesis environmental stability and the intensity of deep moist convection can be considerably modulated by the diurnal extremes in radiation. Nighttime destabilization of the local and large-scale environment through radiative cooling may promote deep moist convection and increase the genesis potential, likely enhancing the intensity of the resultant tropical cyclones. Modified longwave and shortwave radiation experiments found tropical cyclone development to be highly sensitive to the periodic cycle of heating and cooling, with suppressed formation in the daytime-only and no-radiation experiments and quicker intensification compared with the control for nighttime-only experiments.