Analyzing Spatial Patterns of Health Vulnerability to Drought in the Brazilian Semiarid Region.

Health determinants might play an important role in shaping the impacts related to long-term disasters such as droughts. Understanding their distribution in populated dry regions may help to map vulnerabilities and set coping strategies for current and future threats to human health. The aim of the study was to identify the most vulnerable municipalities of the Brazilian semiarid region when it comes to the relationship between drought, health, and their determinants using a multidimensional index. From a place-based framework, epidemiological, socio-economic, rural, and health infrastructure data were obtained for 1135 municipalities in the Brazilian semiarid region. An exploratory factor analysis was used to reduce 32 variables to four independent factors and compute a Health Vulnerability Index. The health vulnerability was modulated by social determinants, rural characteristics, and access to water in this semiarid region. There was a clear distinction between municipalities with the highest human welfare and economic development and those municipalities with the worst living conditions and health status. Spatial patterns showed a cluster of the most vulnerable municipalities in the western, eastern, and northeastern portions of the semiarid region. The spatial visualization of the associated vulnerabilities supports decision making on health promotion policies that should focus on reducing social inequality. In addition, policymakers are presented with a simple tool to identify populations or areas with the worst socioeconomic and health conditions, which can facilitate the targeting of actions and resources on a more equitable basis. Further, the results contribute to the understanding of social determinants that may be related to medium- and long-term health outcomes in the region.

Construção e aplicação de um índice de vulnerabilidade humana à mudança do clima para o contexto brasileiro: a experiência do estado do Espírito Santo / Construction and application of a human vulnerability index for climate change in the Brazilian context: the experience of the state of Espírito Santo, Brazil

Resumo A mudança do clima representa séria ameaça para a população humana, causando impactos em diferentes setores. Conhecer os fatores que elevam a vulnerabilidade do ser humano à mudança do clima permite identificar pontos críticos e direcionar ações imediatas para reduzi-la. Assim, este estudo desenvolveu e aplicou um índice de vulnerabilidade à mudança do clima para as microrregiões do Espírito Santo, abarcando os elementos fundamentais da vulnerabilidade - exposição, sensibilidade e capacidade adaptativa. Anomalias climáticas de precipitação e temperatura também foram usadas para estimar as alterações para o futuro. A construção dos indicadores se baseou na atribuição de notas indicativas de vulnerabilidade para cada grupo de municípios (clustering), com posterior média aritmética e padronização dos valores para gerar índices variando entre 0 e 1. Verificou-se que a microrregião Noroeste apresenta vulnerabilidade extremamente elevada, em virtude de características, sociodemográficas, econômicas e ambientais. Todo o estado poderá ser afetado por alterações do clima futuro, principalmente pelo aumento de temperaturas médias. O norte do estado poderá ter aumento no número de dias secos consecutivos. Espera-se que esses resultados contribuam para orientar ações de adaptação à mudança do clima e aumentar a resiliência do território a partir da identificação das vulnerabilidades existentes.

Abstract Climate change poses a serious threat to the human population, causing impacts in different sectors. Understanding the factors that may increase human's vulnerability to climate change allows to identify critical points and to direct immediate actions to reduce vulnerability. Thus, this study developed and applied an index of vulnerability to climate change for the microregions of the state of Espírito Santo, Brazil, encompassing the key elements of vulnerability - Exposure, Sensitivity and Adaptive Capacity. Climatic anomalies of precipitation and temperature were also used for estimate future climate changes. Construction of the indicators was based on the assignment of scores indicating levels of vulnerability for each group of municipalities (clustering); subsequent arithmetic mean and standardization of the values were applied to generate indices from 0 and 1. The Northwestern microregion presented high vulnerability due to its sociodemographic, economic and environmental characteristics. In addition, the entire state may be affected by changes in future climate, mainly by the increase of average temperatures. The Northern region may have a considerable increase in the number of consecutive dry days. These results are expected to contribute to guide actions of adaptation to the climate change and to increase the resilience of the territory from the identification of existing vulnerabilities.

Mapping human vulnerability to climate change in the Brazilian Amazon: The construction of a municipal vulnerability index.

Vulnerability, understood as the propensity to be adversely affected, has attained importance in the context of climate change by helping to understand what makes populations and territories predisposed to its impacts. Conditions of vulnerability may vary depending on the characteristics of each territory studied-social, environmental, infrastructural, public policies, among others. Thus, the present study aimed to evaluate what makes the municipalities of the state of Amazonas, Brazil, vulnerable to climate change in the context of the largest tropical forest in the world, and which regions of the State are the most susceptible. A Municipal Vulnerability Index was developed, which was used to associate current socio-environmental characteristics of municipalities with climate change scenarios in order to identify those that may be most affected by climate change. The results showed that poor adaptive capacity and poverty had the most influence on current vulnerability of the municipalities of Amazonas with the most vulnerable areas being the southern, northern, and eastern regions of the state. When current vulnerability was related to future climate change projections, the most vulnerable areas were the northern, northeastern, extreme southern, and southwestern regions. From a socio-environmental and climatic point of view, these regions should be a priority for public policy efforts to reduce their vulnerability and prepare them to cope with the adverse aspects of climate change.