The Role of Radiation in Tropical Cyclone Genesis and Early Intensification

这一建议旨在改变我们对辐射在热带气旋生成中的作用的认识。 有证据表明，辐射可能在形成的早期阶段起着至关重要的作用，特别是在夜间冷却和清晨对流增强的情况下。然而，在辐射和诱导循环的影响下，复杂的发生途径还没有得到很好的理解。两个成因途径已确定在过去的工作中的调查人员在这项研究中，辐射在这些途径中的作用将在本research.Intellectual MeritThis研究将增加我们的理解，通过阐明辐射的作用，在热带气旋的核心和周围环境中的热带气旋成因。 调查还将探索其他现象，如深对流的日循环，这些现象似乎与辐射强迫有关。 虽然涡度场似乎充满了积极和消极的成分冷池边缘附近，整体涡度随时间的推移而增加。 这些都是前沿问题，现在我们有计算能力来模拟辐射和微物理云解析网格。前几代模型显示了对流（雷暴）的日循环，但无法模拟卷云树冠的增长和高空中不断扩大的冷环-这些特征在自然界中很明显。 根据这一建议取得的进展将建立在以前的工作基础上，并提高我们在热带气象学这一领域的知识。 更广泛的影响这项研究将提高我们对辐射在热带气旋生成中的作用的理解，并最终可能导致改善对这些破坏性风暴的预报。 这项研究应该有助于我们了解未来气候中的热带气旋生成与现在有何不同。 研究结果将通过会议、讲习班向社区传播，并在同行评审的期刊上发表。 将建立一个网站，更广泛地传播研究成果，并与社区进行公开交流。

AbstractThis proposal seeks to transform our knowledge of the role of radiation in tropical cyclogenesis. Evidence suggests that radiation could play a crucial role in the early stages of genesis, particularly with the nighttime cooling and enhanced convection in the early morning hours. However, the complicated pathway to genesis under the influence of radiation and induced circulations is not well understood. Two genesis pathways have been identified in past work by the investigators in this study, and the role of radiation in these pathways will be examined in this research.Intellectual MeritThis study will add to our understanding of tropical cyclogenesis by elucidating the role of radiation in the core of tropical cyclones and in the surrounding environment. The investigation will also explore other phenomena like the diurnal cycle of deep convection that appear to be connected to radiative forcing. While the vorticity field appears to be full of both positive and negative components near cold pool edges, overall vorticity increases with time. These are cutting-edge questions to explore now that we have the computational horsepower to simulate radiation and microphysics on cloud-resolving grids. Previous generations of models showed a diurnal cycle of convection (thunderstorms) but weren't able to simulate growth of the cirrus cloud canopy and the expanding cold rings aloft--features that are evident in nature. Progress under this proposal would build on previous work and improve our knowledge in this area of tropical meteorology. Broader ImpactsThis study will improve our understanding of the role of radiation in tropical cyclogenesis and could eventually lead to improved forecasting of these destructive storms. This research should help us understand how tropical cyclogenesis in future climates may differ from the present. Results will be disseminated to the community through conferences, workshops and published in peer-reviewed journals. A web site will be established to more broadly disseminate research results and provide open communications with the community.