Weakening of hurricanes via marine cloud brightening (MCB)
Weakening of hurricanes via marine cloud brightening (MCB)
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DOI：
10.1002/asl.402
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发表时间：
2012-10-01
影响因子：
3
通讯作者：
Salter, Stephen
中科院分区：
文献类型：
--
作者：
Latham, John;Parkes, Ben;Salter, Stephen
本文研究了冷却飓风生成和早期发展地区海洋表面沃茨的潜力。这将通过用大量的海水云凝结核（CCN），覆盖这些地区或传入电流的来源的低层海洋层积云播种来实现。更高的云滴密度将增加这些云对入射阳光的反射率，并可能增加它们的寿命。因此，这种方法是海洋云增亮（MCB）地球工程技术促进全球冷却的一个更本地化的应用。通过利用一个气候海洋/大气耦合模式HadGEM 1，我们证明了在飓风发展的地区，明智地播种海洋层积云可能会显着降低海表温度（SST），这取决于对已定义但尚未解决的问题的满意解决。因此，人工播种可能会降低飓风强度;但这种影响的程度如何控制尚待确定。我们还解决了重要的问题，如MCB播种可能会影响降水。GCM模型表明，播种对不良降雨减少的影响取决于其位置和大小。在这方面还需要做更多的工作。版权所有（c）2012皇家气象学会
This paper examines the potential to cool ocean surface waters in regions of hurricane genesis and early development. This would be achieved by seeding, with copious quantities of seawater cloud condensation nuclei (CCN), low-level maritime stratocumulus clouds covering these regions or those at the source of incoming currents. Higher cloud droplet density would increase these clouds' reflectivity to incoming sunlight, and possibly their longevity. This approach is therefore a more localized application of the marine cloud brightening (MCB) geoengineering technique promoting global cooling. By utilizing a climate ocean/atmosphere coupled model, HadGEM1, we demonstrate thatsubject to the satisfactory resolution of defined but unresolved issuesjudicious seeding of maritime stratocumulus clouds might significantly reduce sea surface temperatures (SSTs) in regions where hurricanes develop. Thus artificial seeding may reduce hurricane intensity; but how well the magnitude of this effect could be controlled is yet to be determined. We also address the important question as to how MCB seeding may influence precipitation. GCM modelling indicates that the influence of seeding on undesirable rainfall reductions depends on its location and magnitude. Much more work on this topic is required. Copyright (c) 2012 Royal Meteorological Society