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Spatiotemporal variation in frequency of persistent hot spell events over Africa

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This study examines the long-term variation of the annual occurrence frequency for the Persistent Hot spell Events (PHEs) over the African continent and the underlying mechanisms using the Japanese 55-year Reanalysis (JRA-55) daily dataset for the period 1961–2021. We applied criterion for periods when the daily standardized anomaly index (SAI) value of mean daily temperature […]

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Landslide at the River’s Edge: Alum Bluff, Apalachicola River, Florida

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When rivers impinge on the steep bluffs of valley walls, dynamic changes stem from a combination of fluvial and mass wasting processes. This study identifies the geomorphic changes, drivers, and timing of a landslide adjacent to the Apalachicola River at Alum Bluff, the tallest natural geological exposure in Florida at ~40 m, comprising horizontal sediments […]

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Street characteristics and recreational walking routes in older adults with cognitive concerns

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The global increase in the number of older adults with cognitive impairments has prompted widespread adoption of lifestyle interventions, such as physical activity, to mitigate cognitive decline and enhance cognitive functioning. This study explores the impact of the built environment on recreational walking route choices among older adults experiencing subjective cognitive decline, a demographic that […]

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Why the growth of arboviral diseases necessitates a new generation of global risk maps and future projections

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Global risk maps are an important tool for assessing the global threat of mosquito and tick-transmitted arboviral diseases. Public health officials increasingly rely on risk maps to understand the drivers of transmission, forecast spread, identify gaps in surveillance, estimate disease burden, and target and evaluate the impact of interventions. This paper describes how current approaches […]

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Precipitation whiplash events over the U.S.

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Precipitation whiplash events are expected to become more frequent due to climate change, but what are they? Drs. Esther Mullens and Johanna Engström investigate how whiplash events are defined, their meteorological drivers, and their impacts in the United States in their recent publication “Drought to Flood to Drought” published in the International Journal of Climatology. […]

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Comparing Reflectivity from Space-Based and Ground-Based Radars During Detection of Rainbands in Two Tropical Cyclones

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With varying tangential winds and combinations of stratiform and convective clouds, tropical cyclones (TCs) can be difficult to accurately portray when mosaicking data from ground-based radars. This study utilizes the Dual-frequency Precipitation Radar (DPR) from the Global Precipitation Measurement Mission (GPM) satellite to evaluate reflectivity obtained using four sampling methods of Weather Surveillance Radar 1988-Doppler […]

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Transforming abandoned mines into solar farms

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The demand for renewable energy is becoming increasingly apparent, but a significant challenge lies in the limited availability of land. To limit environmental impacts associated with new development in previously undisturbed lands, this study investigates the potential to convert abandoned mines in Florida and Pennsylvania into solar farms, aligning with federal and state-level clean energy […]

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A big data approach to modelling urban population density functions

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Urban studies have a long tradition of examining the regularity of urban structure by modelling urban population density functions and probing the theoretical or behavioral foundation behind it. Previous studies commonly used census data in areal units such as census tracts or census block groups, which varied a great deal in area size and shape […]

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