Conference: Interaction between wildfire, heatwave, clouds and precipitation over complex topography

在过去的几十年里，美国西部的野火一直在增加，这导致了极端的公共安全和经济问题。众所周知，导致重大野火的条件是高温和低湿度。然而，这些条件是如何形成的仍然存在不确定性，因为研究表明，大规模环流无法解释山区高温和干旱的强度。这次会议将汇集不同主题的科学专家，讨论气象学的不同方面在确定复杂地形下发生重大野火的条件方面所起的作用。除了更好的野火预报条件对下游社会的影响外，这次会议还将让学生和职业早期研究人员有机会与该领域的领导者建立联系并向他们学习。加州大学洛杉矶分校将于2023年春季举办为期两天的研讨会，题为《复杂地形上野火、热浪、云层和降水之间的相互作用》。讲习班的目标是查明关键的科学问题和知识差距，审查目前的观测和模拟能力，并评估潜在实地活动的可行性，以澄清复杂地形上野火、热浪、云层和降水之间相互作用的关键过程。具体专题包括：1)生物质燃烧气溶胶-云-降水相互作用及其在放大热波和干旱期间的潜在作用；2)陆地-大气相互作用及其在放大复杂地形上的火灾天气中的作用；以及3)云和气溶胶对复杂地形上辐射能量的影响。会议计划用于面对面和远程参与。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Wildfires have been increasing in the American West over the past several decades, which has resulted in extreme public safety and economic problems. The conditions that lead to significant wildfires are generally known to be high temperature and low moisture. However, there is still uncertainty about how these conditions form, as studies show that the large-scale circulations cannot explain the strength of the heat and drought in mountainous terrain. This conference will bring together scientific experts on various topics to discuss the role of different aspects of meteorology on setting the conditions for major wildfires in complex terrain. In addition to the downstream societal impact of better forecasting conditions for wildfires, the conference will allow students and early-career researchers the opportunity to network and learn from leaders in the field.The University of California – Los Angeles will host a two-day workshop titled “Interaction between wildfire, heatwave, clouds and precipitation over complex topography” in Spring 2023. The goal of the workshop is to identify the key science questions and gaps of knowledge, to review current observational and modeling capability, and to assess feasibility of a potential field campaign to clarify the key processes behind the interaction between wildfire, heatwave, clouds and precipitation over complex topography. Specific topics will include: 1) Biomass burning aerosol-cloud-precipitation interaction and its potential role in amplifying heatwaves and dry spells, 2) Land-atmospheric interaction and its role in amplifying fire weather over complex topography, and 3) The influence of clouds and aerosols on radiative energy over complex topography. The conference plan is for in-person and remote participation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.