The study of dust intrusions in Portugal is still a subject on which little investigation has been made, especially in terms of their effects. Thus, this work aims to achieve two goals: firstly, to characterize the dust intrusions in the study area; and secondly, to evaluate the possible statistical association between the dust intrusion days and hospital admissions due to respiratory diseases. Dust intrusions in Portugal are prevalent during the summer season. During this season, the dust plumes tend to cover broader areas than in the other seasons and they have origin in the North African countries. In the study area for the period between 2005 and 2015, the relative risk of urgent hospitalizations due to respiratory diseases was 12.6% higher during dust intrusion days. In order to obtain this statistical association, a Distributed Lag Nonlinear Model was developed. With this work, we expect to help the development of further studies regarding North African dust intrusions in Portugal, more precisely their effects on human health.

对葡萄牙沙尘入侵的研究仍然是一个鲜有研究的课题，特别是就其影响而言。因此，这项工作旨在实现两个目标：第一，表征研究区的沙尘入侵；其次，评估粉尘侵入天数与呼吸系统疾病入院率之间可能存在的统计关联。葡萄牙的沙尘入侵在夏季很普遍。在这个季节，尘羽的覆盖范围往往比其他季节更广，它们起源于北非国家。在 2005 年至 2015 年期间的研究区域内，因呼吸系统疾病而紧急住院的相对风险在粉尘入侵期间高出 12.6%。为了获得这种统计关联，开发了分布式滞后非线性模型。通过这项工作，我们希望有助于进一步研究葡萄牙的北非沙尘入侵，更准确地说是它们对人类健康的影响。