Collaborative Research: Coupled Ocean-Atmosphere Feedbacks Affecting California Coastal Climate: Current Conditions and Future Projections

合作研究：影响加州沿海气候的海洋-大气耦合反馈：现状和未来预测

• 批准号: 2022846
• 负责人: Hyodae Seo
• 金额: $ 49.72万
• 依托单位: Woods Hole Oceanographic Institution
• 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: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2022846&HistoricalAwards=false
• 关键词: Collaborative; Research; Coupled; Ocean; Atmosphere

The coastal climate of California is profoundly affected by the ocean, which moderates its hot summers and provides moisture for much-needed winter rains. Sea surface temperature (SST) anomalies and ocean surface current anomalies, ranging from the meso-to-frontal scales of cool coastal upwelling to the regional-to-basin scales of the marine heat waves, are inherently coupled with the atmosphere. This study focuses on the fundamental coupled ocean-atmosphere feedback processes that affect the climate, weather, and upwelling along the coast. The project will use numerical models of the coupled ocean-atmosphere system to improve understanding of the ocean-atmosphere interactions, including with land and mountains, for coastal California. In addition, it will examine the effects on climate of coastal California under projected future greenhouse-gas-forced changes.This project will quantify the effects of ocean-atmosphere boundary layer coupling on California coastal regions using a series of regional high-resolution coupled ocean-atmosphere model simulations, including full ocean-atmosphere coupling and well-resolved orography and land-sea distribution. These will include ensembles of 10-year long runs forced by observed current climate and projected future climate boundary conditions, as well as ensembles of runs initialized under observed marine heat wave conditions. The model runs will be used to study how the statistics of daily, intraseasonal and interannual variability in the atmosphere and the oceanic upwelling field, are affected by the anomalous ocean-atmosphere conditions associated with eddies, fronts, and extreme SST anomalies, and assess how they may be altered by changes in large-scale atmospheric and oceanic drivers associated with global warming.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.

加利福尼亚州的沿海气候深受海洋影响，海洋缓解了炎热的夏季，并为急需的冬季降雨提供水分。海面温度（SST）异常和海洋表面流异常，从中观到锋面尺度的冷沿海上升流到区域到盆地尺度的海洋热浪，本质上与大气耦合。这项研究的重点是影响气候、天气和沿海上升流的基本耦合海洋-大气反馈过程。该项目将使用海洋-大气耦合系统的数值模型来增进对加利福尼亚州沿海海洋-大气相互作用（包括与陆地和山脉的相互作用）的了解。此外，还将研究在预计的未来温室气体强制变化下对加州沿海气候的影响。该项目将利用一系列区域高分辨率海洋大气耦合模型模拟，包括完全海洋大气耦合以及高分辨率地形和陆海分布，量化海洋大气边界层耦合对加州沿海地区的影响。这些将包括由观测到的当前气候和预测的未来气候边界条件所迫使的 10 年长期运行集合，以及在观测到的海洋热浪条件下初始化的运行集合。该模型运行将用于研究大气和海洋上升流场的每日、季节内和年际变率的统计数据如何受到与涡流、锋面和极端海温异常相关的海洋大气异常条件的影响，并评估与全球变暖相关的大规模大气和海洋驱动因素的变化如何改变它们。该奖项反映了美国国家科学基金会的法定使命，并已被 通过使用基金会的智力优点和更广泛的影响审查标准进行评估，认为值得支持。

项目成果

Suppressed p CO 2 in the Southern Ocean due to the interaction between current and wind

• DOI: 10.1029/2021jc017884
• 发表时间: 2021-11
• 期刊: Journal of Geophysical Research: Oceans
• 作者: K. Kwak;Hajoon Song;J. Marshall;H. Seo;D. McGillicuddy

Improving Wave‐Based Air‐Sea Momentum Flux Parameterization in Mixed Seas

改进混合海洋中基于波浪-空气-海洋动量通量参数化

• DOI: 10.1029/2022jc019277
• 发表时间: 2023
• 期刊: Journal of Geophysical Research: Oceans
• 作者: Sauvage, César;Seo, Hyodae;Clayson, Carol Anne;Edson, James B.
• 通讯作者: Edson, James B.

Impacts of ocean currents on the South Indian Ocean extratropical storm track through the relative wind effect

• DOI: 10.1175/jcli-d-21-0142.1
• 发表时间: 2021-08
• 期刊: Journal of Climate
• 影响因子: 4.9
• 作者: H. Seo;Hajoon Song;L. O'Neill;M. Mazloff;B. Cornuelle