Collaborative Research: Ontario Winter Lake-effect Systems-Surface and Atmospheric Influences on Lake-effect Convection (OWLeS-SAIL)

合作研究：安大略冬季湖效应系统-地表和大气对湖效应对流的影响（OWLeS-SAIL）

• 批准号: 1258548
• 负责人: Neil Laird
• 金额: $ 35.69万
• 依托单位: Hobart and William Smith Colleges
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-01 至 2018-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258548&HistoricalAwards=false
• 关键词: Collaborative; Research; Ontario; Winter; Lake

This grant is part of a larger effort centered on the Ontario Winter (OW) Lake-effect Systems (LeS) field project, to be conducted December 2013-January 2014. OWLeS will focus on two complementary lines of research, each tracing to a preferred wind regime, characteristic cross-lake fetch and corresponding distinct mesoscale mode of winter storm organization. Activities led by this sub-group will focus on "short-fetch" events in which prevailing low-level winds are oriented at large angles relative to Lake Ontario's long axis. These investigators will seek to advance process-oriented understanding of atmospheric boundary-layer circulations over adjacent complex land cover, factors controlling the location and downwind persistence/spatial extent of lake-effect circulations and associated bands of heavy snowfall, as well as those precipitation events associated with smaller bodies of water as are found in the Finger Lakes region. Observational assets to be deployed during OWLeS will include the University of Wyoming King Air instrumented aircraft, the CSWR Doppler on Wheels mobile radars, multiple mobile rawinsounding systems, the Millersville University Profiling System, the UAH Mobile Integrated Profiling System, and a variety of other surface measurement systems. The intellectual merit of this sub-group's activities is centered upon determination of (1) how upwind land-surface and atmospheric factors determine the three-dimensional structure of the short-fetch convective LeS PBL that develop over a relatively-warm, open water surface; (2) how organized, initially convective cloud and precipitation structures under short-fetch conditions persist far downstream over land, long after leaving the buoyancy source (i.e., the ice-free waters of Lake Ontario); and (3) factors controlling the development of, and interactions between, complex atmospheric stratifications embodying a internal planetary boundary layer and residual layers resulting from airmass advection over multiple mesoscale bodies of water and intervening land.Broader impacts of OWLeS will include improved physical understanding and model-based representations of conditions that impact populations and associated major transportation corridors along the shores of the Great Lakes region, as well as extensive opportunities for enhanced classroom and hands-on field project based educational opportunities for a large number of students who will be actively engaged in field campaign planning, instrument preparation, data collection and analysis. Outreach efforts will extend to K-12 students and college students enrolled at nearby institutes of higher learning.

该赠款是将于2013年12月至2014年1月进行的安大略省冬季（OW）湖泊效应系统（LES）现场项目的更大努力的一部分。OWLES将集中在两项互补的研究线上，每个研究都追溯到首选的风度，特征性的交叉湖泊获取和相应的不同冬季风暴组织模式。 该子组领导的活动将集中在“短挑战”事件上，其中普遍的低级风与安大略湖的长轴以很大的角度定向。 这些研究者将寻求在相邻的复杂土地覆盖范围内提高对大气边界循环的理解，这些因素控制着湖泊效应循环的位置和下风持久性/空间范围，以及相关的大雪的相关带，以及在手指湖区发现与较小的水域相关的与较小的水体相关的降水事件。 在OWLE期间部署的观察资产将包括怀俄明大学国王空气仪器飞机，车轮移动雷达上的CSWR多普勒，多个移动的Rawinsounding Systems，Millersville University Proring System，UAH Mobile Mobile Integrated Proporting System，以及各种其他表面测量系统。 该子群的活动的智力优点以（1）确定（1）向上风地面和大气因子确定了在相对温暖的开放水面上发展的短途对流LES PBL的三维结构； （2）在离开浮力来源（即安大略湖的无冰域水域）之后很长一段时间，在短味条件下，在陆地上的有组织的，最初是如何有组织的，对流的云和降水结构持续到陆地上很远的地方； （3）控制复杂的大气分层的发展和相互作用的因素，体现了内部行星边界层和由空气质量对流体内的空气质量对流体和含土地影响的残留层产生的因素。基于实地项目的基于实地项目的教育机会，这些学生将积极参与现场活动计划，仪器准备，数据收集和分析。 外展工作将扩展到附近高等教育学院入学的K-12学生和大学生。