Strateole-2: Atmospheric Wave Influences on Cirrus, Water Vapor, and Global Circulation Near the Tropical Tropopause
Strateole-2:大气波对热带对流层顶附近的卷云、水蒸气和全球环流的影响
基本信息
- 批准号:2231667
- 负责人:
- 金额:$ 76.89万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-09-01 至 2026-08-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
This award supports analysis of observations collected in the first two deployments of the Strateole-2 field campaign, which took place in the winters of 2019/2020 (8 flights) and 2021/2022 (17 flights). Strateole-2 is a long-duration ballooning campaign organized by the Centre National d'Etudes Spatiales (CNES), the French national space agency. The balloons were launched from the Seychelles and drifted around the equator for up to two months following the winds of the lower stratosphere. The campaign used a variety of instruments to observe the tropical tropopause layer (TTL), the transition zone between the troposphere (the domain of clouds, precipitation, and weather systems) and the stratosphere (the cold and dry region above it which contains the ozone layer). A primary focus of Strateole-2 is gravity waves, meaning wave motions in the atmosphere for which the primary restoring force is gravity. Such waves are generated by vertical motions occurring in the deep convective clouds over tropical oceans but they can have horizontal wavelengths much larger than convective systems, with sufficient extent in latitude to be affected by the Coriolis force and its variation with latitude. These waves are of interest because they provide the vertical transport of horizontal momentum which drives the quasi-biennial oscillation (QBO), a reversal of the winds in the equatorial stratosphere that starts at high levels and descends over the next two years. The up-and-down motions in the waves also affect the temperature of the TTL, and the colder temperatures occurring in the upward displacements promote the condensation of ambient water vapor, promoting the formation of thin cirrus clouds which block outgoing infrared radiation and thus have an effect on Earth's energy balance. The formation of ice particles in cirrus clouds also reduces the amount of water vapor entering the stratosphere, where it has additional effects on the planetary energy balance.Work performed here focuses specifically on waves which are long, with horizontal wavelengths of perhaps 1,000km, but shallow, with vertical wavelengths less than a kilometer, and periods of a few days. The project takes advantage of the NSF-funded suite of instruments flown in the deployments, including the radio occultation receiver (ROC) supported under AGS-1642650, the fiber optic temperature profiler (FLOATS) developed under AGS-1642277, and the reel-down instrument package (RACHuTS) developed under AGS-1643022. It also uses data from instruments developed by researchers in France, including a balloon-borne lidar (BeCOOL) and an infrared water vapor sensor (PicoSTRAT), as well as onboard thermometers, barometers, and GPS receivers. These data sources are used in combination with satellite data and reanalysis products, and specialized simulations with enhanced vertical resolution are performed by unfunded collaborators at the European Centre for Medium-Range Weather Forecasts. One issue to be addressed is the generation of these pancake-like waves, which must somehow be generated by localized convection despite their long horizontal wavelengths. Work on momentum transport considers wave breaking and subsequent generation of turbulence as well as the calculation of wave momentum flux.The work has broader impacts through its potential for improving the representation of the QBO in models used for long-range weather prediction. Models have difficulty representing the QBO, in part due to the difficulty of representing the effect of gravity wave momentum transport, and the QBO plays important roles in modulating the potentially predictable forms of subseasonal weather variations. In addition, the radiative effects of cirrus clouds and stratospheric water vapor are among the factors that matter for understanding and anticipating anthropogenic climate change. In addition, the PIs conduct public outreach and education by participating in an effort to correct scientific misunderstanding in social media, working with colleagues to develop easy-to-use tutorials that give users access to scientific data and information. The project provides support and training to a postdoctoral fellow, thereby promoting the scientific workforce in this research area.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.
该奖项支持对在2019/2020年冬季(8次飞行)和2021/2022年冬季(17次飞行)进行的前两次部署中收集的观察结果进行分析。 气球2号是法国国家空间研究中心(CNES)组织的一项长期气球活动。 这些气球从塞舌尔群岛发射,随着平流层下部的风在赤道周围漂流了两个月。 该运动使用各种仪器观测热带对流层顶层,即对流层(云、降水和天气系统的范围)与平流层(平流层上方寒冷干燥的区域,其中包含臭氧层)之间的过渡区。 重力波是大气中的波动,其主要恢复力是重力。这种波是由热带海洋上空深对流云的垂直运动产生的,但它们的水平波长可能比对流系统大得多,在纬度上有足够的范围受到科里奥利力及其随纬度变化的影响。 这些波是感兴趣的,因为它们提供了水平动量的垂直传输,这驱动了准两年振荡(QBO),这是赤道平流层风的逆转,从高层开始,在未来两年下降。波浪的上下运动也会影响TTL的温度,向上移动时温度较低,促进周围水蒸气的凝结,促进薄卷云的形成,从而阻止向外的红外辐射,从而影响地球的能量平衡。 卷云中冰粒的形成也减少了进入平流层的水蒸气量,这对行星的能量平衡产生了额外的影响。这里的工作主要集中在长波上,水平波长大约为1,000公里,但垂直波长小于1公里,周期为几天。 该项目利用了美国国家科学基金会资助的仪器套件,包括AGS-1642650支持的无线电掩星接收器(ROC),AGS-1642277开发的光纤温度剖面仪(FLOATS),以及AGS-1643022开发的卷轴式仪器包(RACHuTS)。 它还使用了法国研究人员开发的仪器的数据,包括球载激光雷达(BeCOOL)和红外水汽传感器(PicoSTRAT),以及机载温度计,气压计和GPS接收器。这些数据来源与卫星数据和再分析产品结合使用,欧洲中期天气预报中心的无资金合作者进行了具有更高垂直分辨率的专门模拟。需要解决的一个问题是这些煎饼状波的产生,尽管它们的水平波长很长,但它们必须以某种方式由局部对流产生。 动量输运方面的工作考虑了波浪破碎和随后产生的湍流,以及波浪动量通量的计算。这项工作有可能改善用于长期天气预报的模型中QBO的代表性,因此具有更广泛的影响。 模型很难代表QBO,部分原因是由于重力波动量传输的影响难以代表,QBO在调制潜在的可预测形式的亚季节天气变化中起着重要的作用。 此外,卷云和平流层水蒸气的辐射效应是理解和预测人为气候变化的重要因素之一。 此外,PI通过参与纠正社交媒体中的科学误解的努力进行公共宣传和教育,与同事合作开发易于使用的教程,使用户能够访问科学数据和信息。 该项目为博士后研究员提供支持和培训,从而促进该研究领域的科学工作者。该奖项反映了NSF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。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Martina Bramberger其他文献
Martina Bramberger的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Martina Bramberger', 18)}}的其他基金
Collaborative Research: Characterizing Atmospheric Tropical-waves of the Lower Stratosphere with Reel-down Atmospheric Temperature Sensing for Strateole-2--RATS Chasing CATS!
合作研究:利用 Strateole-2 的卷轴大气温度传感来表征平流层下部的大气热带波——RATS 追逐 CATS!
- 批准号:
2335082 - 财政年份:2024
- 资助金额:
$ 76.89万 - 项目类别:
Continuing Grant
Collaborative Research: Improving the representation of the Quasi-biennial Oscillation and its surface impacts in NCAR climate models
合作研究:改善 NCAR 气候模型中准两年期振荡及其地表影响的表征
- 批准号:
2110002 - 财政年份:2021
- 资助金额:
$ 76.89万 - 项目类别:
Standard Grant
相似海外基金
Effect of meteorology on the upper atmosphere by atmospheric gravity wave
大气重力波对高层大气的气象影响
- 批准号:
22KJ2409 - 财政年份:2023
- 资助金额:
$ 76.89万 - 项目类别:
Grant-in-Aid for JSPS Fellows
Multi-scale models for nonlinear wave-induced atmospheric phenomena
非线性波引起的大气现象的多尺度模型
- 批准号:
RGPIN-2018-05296 - 财政年份:2022
- 资助金额:
$ 76.89万 - 项目类别:
Discovery Grants Program - Individual
Seamless Diagnosis of Atmospheric and Oceanic Wave Energy Circulation for Tropical and Mid-Latitude Interactions
热带和中纬度相互作用的大气和海洋波浪能循环的无缝诊断
- 批准号:
22H00176 - 财政年份:2022
- 资助金额:
$ 76.89万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Multi-scale models for nonlinear wave-induced atmospheric phenomena
非线性波引起的大气现象的多尺度模型
- 批准号:
RGPIN-2018-05296 - 财政年份:2021
- 资助金额:
$ 76.89万 - 项目类别:
Discovery Grants Program - Individual
Atmospheric Gravity Wave Radiosonde Field Campaign for Eclipse 2020
2020 年日食大气重力波无线电探空仪现场活动
- 批准号:
2018182 - 财政年份:2020
- 资助金额:
$ 76.89万 - 项目类别:
Standard Grant
Multi-scale models for nonlinear wave-induced atmospheric phenomena
非线性波引起的大气现象的多尺度模型
- 批准号:
RGPIN-2018-05296 - 财政年份:2020
- 资助金额:
$ 76.89万 - 项目类别:
Discovery Grants Program - Individual
Multi-scale models for nonlinear wave-induced atmospheric phenomena
非线性波引起的大气现象的多尺度模型
- 批准号:
RGPIN-2018-05296 - 财政年份:2019
- 资助金额:
$ 76.89万 - 项目类别:
Discovery Grants Program - Individual
Advancing the Understanding of the Impacts of Wave-Induced Temperature Fluctuations on Atmospheric Chemistry
增进对波浪引起的温度波动对大气化学影响的理解
- 批准号:
1906719 - 财政年份:2019
- 资助金额:
$ 76.89万 - 项目类别:
Standard Grant
Wave Models for Atmospheric Fluid Dynamics
大气流体动力学的波动模型
- 批准号:
RGPIN-2014-04306 - 财政年份:2018
- 资助金额:
$ 76.89万 - 项目类别:
Discovery Grants Program - Individual
Multi-scale models for nonlinear wave-induced atmospheric phenomena
非线性波引起的大气现象的多尺度模型
- 批准号:
RGPIN-2018-05296 - 财政年份:2018
- 资助金额:
$ 76.89万 - 项目类别:
Discovery Grants Program - Individual