Majid Mirzaei , Adel Shirmohammadi , Alfredo Ruiz-Barradas , Lars J. Olson , Masoud Negahban-Azar
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引用次数: 0
Abstract
Global environmental stability is significantly impacted by climate change, with an increasing frequency and intensity of extreme weather events posing substantial risks to infrastructure, ecosystems, and communities. In this study, a comprehensive analysis of extreme precipitation events in Maryland is provided, utilizing the latest CMIP6 models to assess historical (1951–2022) trends and project future scenarios from 2022 to 2100 under three Shared Socioeconomic Pathways (SSP126, SSP245, and SSP585). Extreme precipitation events were analyzed by fitting a Generalized Logistic (GLO) distribution to daily observational precipitation data, with events above the 95th percentile identified as extreme. The frequency and magnitude of these events were determined by counting annual occurrences, calculating mean magnitudes, and assessing their probability across different climate scenarios. Additionally, Depth-Duration-Frequency (DDF) curves were developed to estimate expected precipitation amounts for various durations and return periods, with a focus on the associated uncertainties. The findings indicate that the probability of extreme precipitation events has slightly increased over the past seven decades, with notable variability between years, while the magnitude of these events has remained relatively stable. Future projections suggest a considerable rise in both the frequency and magnitude of extreme events, particularly under the SSP585 scenario, with the most severe impacts expected in certain regions of Maryland (Anne Arundel County and Dorchester County) and on the global level. This highlights the varying degrees of vulnerability across the state and underscores the need for targeted adaptation strategies. These results emphasize the critical importance of emissions mitigation to limit the severity of future extreme weather events and suggest that robust, region-specific adaptation measures will be essential in managing the increasing risks associated with climate change.
期刊介绍:
Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following:
Urban meteorology and climate[...]
Urban environmental pollution[...]
Adaptation to global change[...]
Urban economic and social issues[...]
Research Approaches[...]