Drought–heatwave nexus in Brazil and related impacts on health and fires: A comprehensive review,Annals of the New York Academy of Sciences

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Drought–heatwave nexus in Brazil and related impacts on health and fires: A comprehensive review
Annals of the New York Academy of Sciences ( IF 4.1 ) Pub Date : 2022-09-02 , DOI: 10.1111/nyas.14887
Renata Libonati _{1,

2,

3} , João L Geirinhas ₂ , Patrícia S Silva ₂ , Djacinto Monteiro Dos Santos ₁ , Julia A Rodrigues ₁ , Ana Russo ₂ , Leonardo F Peres ₁ , Luiza Narcizo ₁ , Monique E R Gomes ₁ , Andreza P Rodrigues ₄ , Carlos C DaCamara ₂ , José Miguel C Pereira _{3,

5} , Ricardo M Trigo _{1,

2}

Affiliation

Climate change is drastically altering the frequency, duration, and severity of compound drought-heatwave (CDHW) episodes, which present a new challenge in environmental and socioeconomic sectors. These threats are of particular importance in low-income regions with growing populations, fragile infrastructure, and threatened ecosystems. This review synthesizes emerging progress in the understanding of CDHW patterns in Brazil while providing insights about the impacts on fire occurrence and public health. Evidence is mounting that heatwaves are becoming increasingly linked with droughts in northeastern and southeastern Brazil, the Amazonia, and the Pantanal. In those regions, recent studies have begun to build a better understanding of the physical mechanisms behind CDHW events, such as the soil moisture–atmosphere coupling, promoted by exceptional atmospheric blocking conditions. Results hint at a synergy between CDHW events and high fire activity in the country over the last decades, with the most recent example being the catastrophic 2020 fires in the Pantanal. Moreover, we show that HWs were responsible for increasing mortality and preterm births during record-breaking droughts in southeastern Brazil. This work paves the way for a more in-depth understanding on CDHW events and their impacts, which is crucial to enhance the adaptive capacity of different Brazilian sectors.

中文翻译：

巴西的干旱-热浪关系及其对健康和火灾的相关影响：全面回顾

气候变化正在极大地改变复合干旱-热浪 (CDHW) 事件的频率、持续时间和严重程度，这给环境和社会经济部门带来了新的挑战。这些威胁在人口不断增长、基础设施脆弱和生态系统受到威胁的低收入地区尤为重要。本综述综合了巴西在理解 CDHW 模式方面的新进展，同时提供了关于火灾发生和公共卫生影响的见解。越来越多的证据表明，热浪越来越多地与巴西东北部和东南部、亚马逊流域和潘塔纳尔的干旱联系在一起。在这些地区，最近的研究已经开始更好地理解 CDHW 事件背后的物理机制，例如土壤水分 - 大气耦合，由特殊的大气阻塞条件促进。结果暗示，CDHW 事件与该国过去几十年的高火灾活动之间存在协同作用，最近的例子是 2020 年潘塔纳尔的灾难性火灾。此外，我们表明，在巴西东南部破纪录的干旱期间，HWs 是导致死亡率和早产率增加的原因。这项工作为更深入地了解 CDHW 事件及其影响铺平了道路，这对于提高巴西不同部门的适应能力至关重要。我们表明，在巴西东南部破纪录的干旱期间，HWs 是导致死亡率和早产率增加的原因。这项工作为更深入地了解 CDHW 事件及其影响铺平了道路，这对于提高巴西不同部门的适应能力至关重要。我们表明，在巴西东南部破纪录的干旱期间，HWs 是导致死亡率和早产率增加的原因。这项工作为更深入地了解 CDHW 事件及其影响铺平了道路，这对于提高巴西不同部门的适应能力至关重要。

更新日期：2022-09-02

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