תוצאות חיפוש - "American Geophysical Union"

Abstract The radiative effects of black carbon depend critically on its atmospheric lifetime, which is controlled by the rate at which freshly emitted combustion particles become internally mixed with other aerosol components. Global aerosol models strive to represent this process, but the timescale...

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Abstract This study investigates the local impact of weak sea surface temperature (SST) warm anomalies on trade cumulus cloudiness in an idealized and ensemble framework with large‐eddy simulations. The control experiment uses a spatially uniform, time‐invariant SST and mean large‐scale conditions a...

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Abstract We conducted a pilot study to explore methods of incorporating qualitative community knowledge into quantitative assessment of temporal and spatial air quality patterns in a neighborhood in Vancouver, British Columbia. We deployed a low‐cost sensor network measuring NO, NO2, and PM2.5. We u...

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Abstract The Sun Radio Interferometer Space Experiment (SunRISE) Ground Radio Lab (GRL) is a Science, Technology, Engineering, Arts, and Mathematics (STEAM) project, sponsored by NASA's SunRISE mission and organized by the University of Michigan College of Engineering. The project aims to engag...

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Abstract Wildfire smoke and extreme heat events are worsening in California, but their combined health effects are not well understood. This study estimates joint effects of extreme heat and wildfire smoke on hospitalizations in California, 2011–2020. We used a case crossover design with time‐strati...

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Abstract Equatorial Plasma Bubbles (EPBs) generally form around sunset in equatorial to low‐latitude regions. However, based on observations of the rate total electron content (TEC) change index (ROTI) map over Indonesia and the ionosonde data from the Southeast Asian equatorial station during the s...

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Abstract Global uncoupled storm‐resolving simulations using the ICOsahedral Non‐hydrostatic (ICON) model with prescribed sea surface temperature (SST) show a double band of precipitation in the Western Pacific, a feature explained by reduced precipitation over the warm pool. Three hypotheses using a...

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Abstract Observations of solar energetic particles (SEPs) accelerated at collisionless shocks driven by coronal mass ejections (CMEs) highlight the importance of understanding proton transport in velocity space. In this study, we present an ensemble model based on the one‐dimensional Fokker–Planck e...

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Abstract Ocean Alkalinity Enhancement (OAE) is emerging as a viable method for removing anthropogenic CO2 emissions from the atmosphere to mitigate climate change. To achieve substantial carbon reductions, OAE would need to be deployed at scale across the global ocean. Hence, there is a need to quan...

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Abstract This study confirms the high accuracy of SWOT in capturing river surface elevations, slopes and hydraulic dynamics over the Franco‐German Rhine, exceeding expectations. By leveraging in situ networks, we evaluate SWOT products from pixel cloud (PIXC) to reach‐averaged measurements, demonstr...

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Abstract Aerosols emitted from biomass burning affect human health and climate, both regionally and globally. The magnitude of these impacts is altered by the biomass burning plume injection height (BB‐PIH). However, these alterations are not well‐understood on a global scale. We present the novel i...

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Abstract The ice phase is a major contributor to precipitation formation over continents due to its efficiency in growing hydrometeors to large enough sizes for sedimentation. One prominent growth mechanism is the vapor deposition onto ice crystals. However, its actual growth rates remain ambiguous....

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Abstract Extreme heat is worsening due to climate change, and, in combination with increasing urban growth, is an escalating public health concern. In the Arabian Peninsula, the wet‐bulb temperature is projected to surpass theoretical human tolerance limits during the 21st century. Yet, heat researc...

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Abstract Accurate modeling of the Venusian cloud structure remains challenging due to its complex microphysical properties. Condensation primarily determines the cloud particle size distribution within the various cloud layers. However, existing Venus microphysics models mainly use a full‐stationary...

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Abstract Air pollution, particularly fine particulate matter, poses significant health and environmental risks, with exposure levels exhibiting considerable spatial inequality. However, few studies have comprehensively examined how urban form and environmental factors influence air pollution exposur...

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Abstract Air quality forecasting is crucial for public health, especially in rural, suburban, and developing areas lacking reliable monitoring data. Hybrid monitoring (surface, satellite, and models) offers a scalable, cost‐effective solution for tracking pollution and trends. This work presents a m...

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Abstract The launch of the Surface Water and Ocean Topography (SWOT) satellite in December 2022 started a new era of swath altimetry, introducing an unprecedented global data set of high‐resolution two‐dimensional water level imagery. During its initial calibration and validation phase (cal/val), SW...

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Abstract Data‐driven weather prediction (DDWP) has made significant advancements in recent years. However, weather prediction using DDWPs still requires an accurate initial field as the input. To fulfill this requirement, the four‐dimensional variational (4DVar) approach can offer initial fields. Re...

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Abstract The Salton Sea, California's largest lake, is undergoing significant environmental degradation, which has adverse health effects on nearby rural communities, primarily Latinx and Torres Martinez Desert Cahuilla Indian. Over the past two decades, the lake's water levels have steadi...

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Abstract Modeling human‐environment feedbacks is critical for assessing the effectiveness of climate change mitigation and adaptation strategies under a changing climate. The Energy Exascale Earth System Model (E3SM) now includes a human component, with the Global Change Analysis Model (GCAM) at its...

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