NSFGEO-NERC Equatorial Line Observations

NSFGEO-NERC 赤道线观测

• 批准号: NE/R012431/1
• 负责人: Adrian Matthews
• 金额: $ 30.7万
• 依托单位: University of East Anglia
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FR012431%2F1
• 关键词: NSFGEO; NERC; Equatorial; Line; Observations

Overview: Modern management of extreme weather events crucially depends on weather forecasts reliable for extended time periods. Much of the predictability of global weather patterns lays within the intraseasonal variability of the tropical circulation and in particular the Madden-Julian Oscillation (MJO). The Maritime Continent (MC) is arguably the most important region in the global weather and climate system, in terms of forcing global atmospheric variability on sub-seasonal to decadal time scales, and is the core region for the MJO. However, the multi-scale interactions of the atmosphere, ocean and land surfaces in the MC region are sparsely observed, poorly understood and badly represented in our models, leading to systematic errors in extended range forecasts. In this project, the interactions within atmospheric equatorial convectively coupled Kelvin waves(CCKWs), the leading modes of eastward moving convection on time scales between several days and three weeks, will be investigated. CCKWs and other equatorial waves form the "building blocks" of the active phase of MJO. The main effort will be to organize and execute the Equatorial Line Observations (ELO) field campaign during the winter of 2018/2019 - as a component of the International Years of the Maritime Continent (YMC) program. Based on collected in-situ data as well as other observational, remote sensing and modelling datasets, the key physical mechanisms responsible for multi-scale interactions associated with the propagating atmospheric convection over the Maritime Continent will be analysed. To this end, a novel Lagrangian approach in the analysis of propagating events will be employed to study the interaction between tropical waves and the local atmospheric and oceanic environment, in particular over the MC region.Intellectual Merit: The project involves state-of-the-art theoretical and observational research at the frontiers of atmospheric physics, physical oceanography and air-sea interactions. A major part of the project is dedicated to the collection and analysis of unique in-situ data - fundamental to an improved understanding of the interaction between the MJO and MC. As a result of this project - the physical, dynamical and thermodynamical mechanisms responsible for the blocking and favouring propagation of atmospheric convection across the MC region will be identified. This will allow full exploitation of the predictability of weather patterns that govern circulation in the tropics.Broader Impacts: The identification of physical mechanisms governing extreme precipitation events will benefit inhabitants of the MC region. Improved reliability of weather and climate forecasts will benefit the policy-makers, strategic planners, insurance industry and food security industries who use these predictions for decision making. Collaboration between scientists from the USA, Europe and Indonesia will contribute to research diversity and capacity building among all the involved institutions with great benefit for the early career researchers involved in this project.

概述：极端天气事件的现代管理关键依赖于长期可靠的天气预报。全球天气模式的可预测性很大程度上取决于热带环流的季节内可变性，特别是马登-朱利安振荡(MJO)。海洋大陆(MC)可以说是全球天气和气候系统中最重要的区域，因为它迫使全球大气在亚季节到十年的时间尺度上变化，并且是MJO的核心区域。然而，MC地区大气、海洋和陆地表面的多尺度相互作用在我们的模式中很少被观测到，了解得很少，而且表现得很差，这导致了扩展范围预报的系统性误差。在这个项目中，将研究大气赤道对流耦合开尔文波(CCKW)内的相互作用，CCKW是在几天到三周的时间尺度上东移对流的主要模式。CCKW和其他赤道波构成了MJO活跃期的“积木”。主要工作将是在2018/2019年冬季组织和执行赤道线观测(ELO)实地活动--作为国际海洋大陆年(YMC)方案的一部分。根据收集的现场数据以及其他观测、遥感和模拟数据集，将分析与海洋大陆上不断传播的大气对流有关的多尺度相互作用的主要物理机制。为此，将使用一种新的拉格朗日方法分析传播事件，以研究热带波与当地大气和海洋环境之间的相互作用，特别是在MC地区。智力优势：该项目涉及大气物理、物理海洋学和海气相互作用前沿的最先进的理论和观测研究。该项目的主要部分致力于收集和分析独特的现场数据--这是更好地了解MJO和MC之间相互作用的基础。作为这一项目的结果--将确定阻止和有利于大气对流在MC区域传播的物理、动力和热力学机制。这将允许充分利用控制热带环流的天气模式的可预测性。更广泛的影响：确定管理极端降水事件的物理机制将使MC地区的居民受益。天气和气候预报可靠性的提高将使决策者、战略规划者、保险业和食品安全行业受益，他们使用这些预报进行决策。来自美国、欧洲和印度尼西亚的科学家之间的合作将有助于所有相关机构的研究多样性和能力建设，对参与该项目的早期职业研究人员大有裨益。

项目成果

Subsurface oceanic structure associated with atmospheric convectively coupled equatorial Kelvin waves in the eastern Indian Ocean

• DOI: 10.1029/2021jc017171
• 发表时间: 2021-03
• 期刊: Journal of Geophysical Research: Oceans
• 作者: M. Azaneu;A. Matthews;D. Baranowski

Dynamical propagation and growth mechanisms for convectively coupled equatorial Kelvin waves over the Indian Ocean

印度洋上空对流耦合赤道开尔文波的动力传播和增长机制

• DOI: 10.1002/qj.4179
• 发表时间: 2021
• 期刊: Quarterly Journal of the Royal Meteorological Society
• 影响因子: 8.9
• 作者: Matthews A

The role of tropical waves in the genesis of Tropical Cyclone Seroja in the Maritime Continent.

• DOI: 10.1038/s41467-023-36498-w
• 发表时间: 2023-02-15
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Latos, Beata;Peyrille, Philippe;Lefort, Thierry;Baranowski, Dariusz B.;Flatau, Maria K.;Flatau, Piotr J.;Riama, Nelly Florida;Permana, Donaldi S.;Rydbeck, Adam V.;Matthews, Adrian J.
• 通讯作者: Matthews, Adrian J.

Equatorial Waves Triggering Extreme Rainfall and Floods in Southwest Sulawesi, Indonesia

• DOI: 10.1175/mwr-d-20-0262.1
• 发表时间: 2021-03
• 期刊: Monthly Weather Review
• 影响因子: 3.2
• 作者: Beata Latos;T. Lefort;M. Flatau;P. Flatau;Donaldi S Permana;D. Baranowski;J. A. I. Paski;E. Makmur;Eko Sulystyo;P. Peyrillé;Zhe Feng;A. Matthews;Jerome M. Schmidt