Collaborative Research: Cloud Radiative Impact on the Surface Energy Budget of the Antarctic Peninsula

合作研究：云辐射对南极半岛表面能量收支的影响

• 批准号: 2229392
• 负责人: XUN ZOU
• 金额: $ 13.81万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2229392&HistoricalAwards=false
• 关键词: Collaborative; Research; Cloud; Radiative; Impact

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).The Western Antarctic Peninsula (WAP; AP) has been warming faster than the global average since the mid-1960s. Concurrent mobilization of ice shelves has been associated with glacial discharge into the ocean, with important implications for global sea level rise. This work will enhance our understanding of the contributions of clouds, water vapor and surface radiation to warming over the WAP. Processes governing phase partitioning and amounts of supercooled liquid water are crucial for understanding surface melt, and will be explored. In addition, the role of clouds and moisture during foehn and atmospheric river (AR) events, will be characterized. Clouds and atmospheric water vapor have strong radiative signals that vary seasonally and with cloud properties. This work will lead to a better understanding of how clouds are impacting surface melt on the AP in the changing climate. In addition, the proposed work will include several undergraduate research projects. Finally, broader impacts include public outreach through participation in GeoWeek at Ohio State University and Polar Science Weekend at the Pacific Science Center in Seattle, WA. It is crucial to human welfare to understand mechanisms responsible for the rapid pace of Antarctic ice loss. This work will lead to a better understanding of how clouds are impacting surface melt on the WAP in the changing climate. The project will use surface- and satellite-based measurements to characterize clouds and humidity. The project maximizes value by using a variety of previous, ongoing, and planned measurements made by an international group of collaborators, along with measurements and model (AMPS, Polar-WRF) results. These will be used to quantify clouds, water vapor, and radiation and their effects on the surface energy balance at three strategically-located stations: Rothera (upwind of the WAP), Marambio (downwind of the WAP) and Escudero (north of the WAP), in order to provide a detailed characterization of cloud radiative and precipitation-formation properties and their role in surface warming and melt events. These mechanisms lead to the following hypotheses: 1) Through their effect on the surface energy balance, clouds play an important role in surface warming on the AP; this role is seasonally varying and sensitive to cloud thermodynamic phase, 2) Radiative heating during foehn events is an important contributor to warming at the northern AP, and 3) The radiative effects of clouds and water vapor have strong influences on heating before and during AR events, with significant differences on the two sides of the WAP.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.

该奖项是根据2021年《美国救援计划法》的全部或部分资助（公共法117-2）。西南极半岛（WAP; AP）自1960年代中期以来的升温速度快于全球平均水平。同时动员冰架与冰川流入海洋有关，对全球海平面上升的重要意义。这项工作将增强我们对云，水蒸气和表面辐射对WAP的变暖的贡献的理解。管理相分配和超冷液水量的过程对于理解表面熔体至关重要，并且将被探索。此外，将表征佛罗和大气河（AR）事件中云和水分的作用。云和大气水蒸气具有强烈的辐射信号，这些信号在季节性变化并具有云特性。这项工作将使人们更好地了解云如何影响气候变化的AP对AP的融化。此外，拟议的工作将包括几个本科研究项目。最后，更广泛的影响包括通过在华盛顿州西雅图的太平洋科学中心参加俄亥俄州立大学的Geoweek和Polar Science Weekend的公共宣传。 了解人类福利至关重要的是要了解负责南极冰损失速度的机制。这项工作将使人们更好地理解云如何影响不断变化的气候中WAP的表面融化。该项目将使用基于表面和卫星的测量来表征云和湿度。该项目通过使用国际合作者组进行的各种以前，正在进行的和计划的测量以及测量和模型（AMPS，Polar-WRF）结果来最大化价值。这些将用于量化云，水蒸气和辐射及其对三个战略性地分配的站点的表面能量平衡的影响：Rothera（WAP的逆风），Marambio（WAP的下风）和Escudero（WAP）（WAP的北部），以便为云辐射和降水型的详细表征及其在表面上的详细表征及其及其在表面上的详细表征及其中的角色及其构成。这些机制导致以下假设：1）通过对表面能量平衡的影响，云在AP的表面变暖中起着重要作用；这种作用在季节性变化和对云热力学阶段的敏感性，2）福斯事件期间的辐射加热是使北部北部升温的重要因素，以及3）3）云和水蒸气的辐射效应对供暖的辐射影响对供暖在AR事件之前和事件中的供暖有很大影响，并在AR期间通过对WAP的两方面进行了差异。智力优点和更广泛的影响审查标准。

项目成果

Record-high Antarctic Peninsula temperatures and surface melt in February 2022: a compound event with an intense atmospheric river

2022 年 2 月南极半岛气温创历史新高且地表融化：与强烈大气河流的复合事件

• DOI: 10.1038/s41612-023-00529-6
• 发表时间: 2023
• 期刊: npj Climate and Atmospheric Science
• 影响因子: 9
• 作者: Gorodetskaya, Irina V.;Durán-Alarcón, Claudio;González-Herrero, Sergi;Clem, Kyle R.;Zou, Xun;Rowe, Penny;Rodriguez Imazio, Paola;Campos, Diego;Leroy-Dos Santos, Christophe;Dutrievoz, Niels
• 通讯作者: Dutrievoz, Niels

The Extraordinary March 2022 East Antarctica “Heat” Wave. Part I: Observations and Meteorological Drivers

2022 年 3 月东南极洲非凡的“热浪”。

• DOI: 10.1175/jcli-d-23-0175.1
• 发表时间: 2024
• 期刊: Journal of Climate
• 影响因子: 4.9
• 作者: Wille, Jonathan D.;Alexander, Simon P.;Amory, Charles;Baiman, Rebecca;Barthélemy, Léonard;Bergstrom, Dana M.;Berne, Alexis;Binder, Hanin;Blanchet, Juliette;Bozkurt, Deniz
• 通讯作者: Bozkurt, Deniz

The Extraordinary March 2022 East Antarctica “Heat” Wave. Part II: Impacts on the Antarctic Ice Sheet

2022 年 3 月东南极洲非凡的“热浪”。

• DOI: 10.1175/jcli-d-23-0176.1
• 发表时间: 2024
• 期刊: Journal of Climate
• 影响因子: 4.9
• 作者: Wille, Jonathan D.;Alexander, Simon P.;Amory, Charles;Baiman, Rebecca;Barthélemy, Léonard;Bergstrom, Dana M.;Berne, Alexis;Binder, Hanin;Blanchet, Juliette;Bozkurt, Deniz
• 通讯作者: Bozkurt, Deniz

Strong Warming Over the Antarctic Peninsula During Combined Atmospheric River and Foehn Events: Contribution of Shortwave Radiation and Turbulence

• DOI: 10.1029/2022jd038138
• 发表时间: 2023-08
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: Xun Zou;P. Rowe;I. Gorodetskaya;D. Bromwich;M. Lazzara;Raúl R. Cordero;Zhenhai Zhang;B. Kawzenuk;J. Cordeira;J. Wille;F. Ralph;L. Bai