权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

NSFGEO-NERC: WAVE-induced Transport of Chemically Active Species in the Mesosphere and Lower Thermosphere (WAVECHASM)

NSFGEO-NERC：波诱导的中层和低热层化学活性物质的传输（WAVECHASM）

基本信息

批准号：
2029162
负责人：
Chester Gardner
金额：
$ 30.14万
依托单位：
University of Illinois at Urbana-Champaign
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-15 至 2024-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2029162&HistoricalAwards=false
关键词：
NSFGEO NERC WAVE induced Transport

项目摘要

This is a project that is jointly funded by the National Science Foundation’s Directorate of Geosciences (NSF/GEO) and the National Environment Research Council (NERC) of the United Kingdom (UK) via the NSF/GEO-NERC Lead Agency Agreement. This Agreement allows a single joint US/UK proposal to be submitted and peer-reviewed by the Agency whose investigator has the largest proportion of the budget. Upon successful joint determination of an award, each Agency funds the proportion of the budget and the investigators associated with its own investigators and component of the work. The WAVECHASM project seeks to improve models of the atmosphere by including small scale processes from the upper atmosphere into a large scale model housed at the NSF's National Center for Atmospheric Research. This cross disciplinary project brings together the physics of the near Earth space environment and atmospheric chemistry.Wave-induced transport in the atmosphere is important to a wide range of research problems, including general circulation modelling, atmospheric chemistry modelling and thermal balance calculations. However, computational cost constraints mean that it has not so far been practical to include small-scale wave transport effects directly in global models. WAVECHASM will enhance understanding of wave transport processes and their relationships to chemistry by improving our ability to model the constituent structure of the mesosphere and lower thermosphere (MLT, 70-120 km). The objectives are to quantify constituent transport theoretically, to develop a wave-transport parameterization scheme suitable for incorporating into existing global atmospheric chemistry models, and to use the upgraded models to characterize wave-transport effects on the morphologies of key MLT constituents. The US participants are responsible for developing the wave parameterization scheme and testing its efficacy using extensive observational data collected by numerous (unfunded) project partners from around the globe. The UK participants are responsible for incorporating the parameterization scheme in the NCAR Whole Atmosphere Community Climate Model and for assessing its performance against a high-resolution regionally refined version of WACCM. Both the US and UK participants with then use the upgraded models to quantify the wave- and turbulence-induced vertical fluxes of key MLT species (Na, Fe, OX, HOX, COX and NOX) and determine their relationships to wave sources in the troposphere and stratosphere.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.

该项目由美国国家科学基金会地球科学理事会（NSF/GEO）和英国国家环境研究委员会（NERC）通过NSF/GEO-NERC牵头机构协议共同资助。该协议允许美国/英国提交一份联合提案，并由其调查员拥有最大比例预算的机构进行同行评审。在成功地共同确定一项奖励后，每个机构为预算的比例和与自己的调查人员有关的调查人员和工作的组成部分提供资金。WAVECHASM项目旨在通过将高层大气的小尺度过程纳入NSF国家大气研究中心的大尺度模型来改进大气模型。这个跨学科项目将近地空间环境物理学和大气化学结合在一起。大气中波致输运对包括大气环流模拟、大气化学模拟和热平衡计算在内的许多研究问题都具有重要意义。然而，计算成本的限制意味着，到目前为止，在全球模型中直接包括小尺度波输运效应还不现实。WAVECHASM将通过提高我们模拟中间层和低层热层（MLT, 70-120 km）组成结构的能力，加强对波传递过程及其与化学关系的理解。目标是在理论上量化组分输运，开发适合纳入现有全球大气化学模型的波输运参数化方案，并使用升级后的模型来表征波输运对关键MLT组分形态的影响。美国参与者负责开发波浪参数化方案，并使用来自全球众多（未资助的）项目合作伙伴收集的大量观测数据来测试其有效性。英国参与者负责将参数化方案纳入NCAR全大气群落气候模式，并根据WACCM的高分辨率区域精细版本评估其性能。然后，美国和英国的参与者都使用升级后的模型来量化波浪和湍流诱导的关键MLT物种（Na, Fe， OX， HOX， COX和NOX）的垂直通量，并确定它们与对流层和平流层中波源的关系。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。