This study examines the role of cloud-radiative interactions in the development of tropical cyclones using satellite measurements and model simulations. Previous modeling studies have found that the enhanced cloud radiative heating from longwave radiation in the convective region plays a key role in promoting the development of tropical convective systems. Here, we use satellite measurements and Weather Research and Forecasting Model (WRF) simulations to further investigate how critical cloud radiative interactions are to the development of tropical cyclones (TCs). Clouds and the Earth's Radiant Energy System measurements show that intensifying TCs have greater radiative heating from clouds within the TC area than weakening ones. Based on this result, idealized WRF simulations are performed to examine the importance of the enhanced radiative heating to TC intensification. Sensitivity experiments demonstrate that removing cloud-radiative interactions often inhibits tropical cyclogenesis, suggesting that cloud-radiative interactions play a critical role.

中文翻译：

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使用卫星测量和 WRF 模拟检查云辐射相互作用在热带气旋发展中的作用

本研究使用卫星测量和模型模拟研究了云-辐射相互作用在热带气旋发展中的作用。先前的建模研究发现，对流区长波辐射增强的云辐射加热对促进热带对流系统的发展起着关键作用。在这里，我们使用卫星测量和天气研究与预测模型 (WRF) 模拟来进一步研究云辐射相互作用对热带气旋 (TC) 发展的关键程度。云和地球辐射能系统的测量表明，与减弱的TC 区域内的云相比，增强的TC 具有更大的辐射加热。基于这个结果，执行理想化的 WRF 模拟以检查增强的辐射加热对 TC 增强的重要性。敏感性实验表明，消除云辐射相互作用通常会抑制热带气旋发生，这表明云辐射相互作用起着关键作用。