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Showing 1 to 17 of 17 for “"Atmospheric rivers"”.
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The cloud-radiative forcing of the U.S. landfalling atmospheric rivers
<p>Atmospheric rivers (ARs) are narrow channels in the atmosphere that transport an enormous amount of moisture from the tropics to the higher latitudes. Streaks of highly reflective clouds are observed along with the ARs in satellite imagery. These clouds both influence the moisture transport of …
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Atmospheric Rivers Effects on Severe Convective Storm Environments from 1979 to 2023
This study investigates the role of Atmospheric Rivers (ARs) in modulating Severe Convective Storm Environments (SCSEs) in the Mid-South United States from 1979 to 2023, leveraging ECMWF Reanalysis v5 reanalysis and the practically perfect hindcast dataset. AR detection was performed using seven …
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The Influence of the North Atlantic Subtropical High on Atmospheric Rivers Over the Eastern United States
This study addresses the susceptibility of atmospheric rivers (ARs) to the behavior of the North Atlantic Subtropical High (NASH). ARs are a major mechanism for meridional moisture transport often connected to heavy precipitation and mid-latitude troughs. The NASH, a semi-permanent anticyclone over …
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Combined Role of Low- and Mid-level Jets and Atmospheric Rivers on Winter Precipitation in the Eastern Sierra Nevada
… water vapor transport referred to as “atmospheric rivers” (ARs) are an important contributor to extreme precipitation in the western United States. This study takes a closer look at the climatology of AR events that generate precipitation on the eastern slopes of the Sierra …
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Multi-scale features of atmospheric rivers and the linkages with local-scale hydrological impacts on the U.S. West Coast
Atmospheric rivers (ARs), defined as filamentary structures of strong water vapor transport in the atmosphere, are an important component of the hydrologic cycle and are characterized by a multi-scale nature. On the one hand, ARs are embedded in the planetary-scale Rossby waves and account for the …
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Atmospheric Rivers and Climate Stresses: Retrospective and Prospective Assessments of the Impacts of Storm Variability, Climate Changes, and Extremes in the Western U.S.
… questions related to the historical role of atmospheric rivers (ARs) - key drivers of precipitation variability and extremes in many parts of the world - as determinants of ecological and hydrological variability and hazards in the western US. In doing so, I distinguish areas with differing …
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Synoptic weather systems over Antarctic sea ice: understanding the link between extratropical cyclones and extreme variability in Antarctic sea-ice concentration
Extratropical cyclones and atmospheric rivers are key drivers in transporting extreme heat and moisture to the poles. Previous studies have shown that extratropical cyclones can promote change in sea-ice concentration at a synoptic scale, however, the extreme variability in synoptic-scale sea-ice …
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Investigating Atmospheric River Precipitation and Associated Snowpack Characteristics Under a Future Warmer Climate Scenario: Case Studies from the Eastern Sierra Nevada near Donner Summit, California
Atmospheric rivers (ARs) making landfall along the California coast have been warming since the 1980's, resulting in changing AR precipitation and temperature characteristics in the Sierra Nevada of California, increasing flood risk, hydrologic resource stress, and impacting winter recreation and …
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Pa’ashi National Park: Resiliency, Restoration, and Reparative Planning for California’s Tulare Lake Basin
In 2023, a series of atmospheric rivers reawakened California's largest sleeping lake, Pa'ashi, in the California Tulare Lake Basin. This thesis supports the proposal of the Tachi Yokut Tribe, one of the watershed's Indigenous communities, to preserve Pa'ashi in the form of a new National Park. I …
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Analysis of Variability in Atmospheric River Characteristics in New Zealand from 1940 through 2023
Atmospheric rivers (ARs) are long, narrow corridors of concentrated atmospheric moisture that transport water vapor from the tropics to the middle latitudes where they can drive extreme precipitation and flooding. They have become especially important for New Zealand where ARs are critical for …
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Environmental dependence of mass-dimension relationships and investigation of microphysical observations of a southern hemisphere atmospheric river
… were collected at various depths within an atmospheric river and represent a unique dataset for Southern Hemisphere atmospheric rivers. The precipitation structures, microphysical processes, and vertical motions observed within the atmospheric river could offer potential areas of model …
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Glacial-Interglacial Variability of Eastern Pacific Hydroclimate
… of extreme precipitation events associated with atmospheric rivers, tropical cyclones, and the El Niño/Southern Oscillation. Paleoclimate records from the Pacific can provide crucial constraints on how these processes responded to past global climate perturbations. A unified view of Pacific-North …
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Coarse-grained models for prediction, uncertainty quantification, and extreme event statistics of turbulent flows in engineering and geophysical settings using physics-consistent data-driven closures
… of climate extreme events such as hurricanes and atmospheric rivers, using as input only inexpensive coarse-scale simulations. To this end, the introduced approach paves the way for the parsimonious study of climate-change scenarios and the effectiveness of possible measures or policies.
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Extreme landfalling atmospheric river events in Arizona: possible future changes
… River basins in Arizona depend, in part, on Atmospheric River (AR)-related precipitation for meeting the water demands of the Phoenix metropolitan area. On the other hand, the region is also susceptible to AR-related flooding. In a warming climate, water vapor in the atmosphere increases, …
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Coupled Air-Sea-Land Interactions: Understanding the MJO Eastward Propagation and Maritime Continent Barrier Effect
… downstream influences include tropical cyclones, atmospheric rivers, heat waves, and episodes of drought and flooding. Though the MJO has been the subject of many observational and modeling studies, it remains a challenging phenomenon for both theoretical understanding and accurate prediction in …
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An analysis of anomalously wet summers in the South Western Cape of South Africa
… Most summer LREs are found to be linked to atmospheric rivers (ARs) or cut-off lows (COLs), which together account for up to 88% of the top 75 LREs. Apart from one study characterising the considerable effect of ARs on winter rainfall, to date little research on ARs has been done for the …