10 research outputs found
A InfluĂȘncia da Circulação de Revolvimento Meridional do AtlĂąntico na Definição da Posição MĂ©dia da ZCIT ao Norte do Equador. Uma RevisĂŁo
How much of Typhoon Morakot's extreme rainfall is attributable to anthropogenic climate change?
Sensitivity of climate models in relation to the âpool of inhibited cloudinessâ over South of the Bay of Bengal
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Advances in Subseasonal to Seasonal Prediction Relevant to Water Management in the Western United States
Virtual Workshop on Subseasonal to Seasonal Climate Forecasting for Water Management in the Western U.S. What: Scientists and stakeholders came together to discuss forecast priorities for western U.S. water resource management and to review existing and emerging methodologies that can improve prediction of precipitation, circulation regimes, and atmospheric rivers at lead times of weeks to months. When: 15â17 March 2022 Where: Online, hosted by IRI, Columbia Climate School ©2022 American Meteorological Society.6 month embargo; online publication: 10 October 2022This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]
Variabilidade dos ciclos anual e interanual da radiação de ondas longas emergentes sobre a América do Sul e vizinhanças
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From Californiaâs Extreme Drought to Major Flooding Evaluating and Synthesizing: Experimental Seasonal and Subseasonal Forecasts of Landfalling Atmospheric Rivers and Extreme Precipitation during Winter 2022/23
California experienced a historic run of nine consecutive landfalling atmospheric rivers (ARs) in three weeksâ time during winter 2022/23. Following three years of drought from 2020 to 2022, intense landfalling ARs across California in December 2022âJanuary 2023 were responsible for bringing reservoirs back to historical averages and producing damaging floods and debris flows. In recent years, the Center for Western Weather and Water Extremes and collaborating institu-; tions have developed and routinely provided to end users peer-reviewed experimental seasonal (1â6 month lead time) and subseasonal (2â6 week lead time) prediction tools for western U.S. ARs, circulation regimes, and precipitation. Here, we evaluate the performance of experimental seasonal precipitation forecasts for winter 2022/23, along with experimental subseasonal AR activity and circulation forecasts during the December 2022 regime shift from dry conditions to persistent troughing and record AR-driven wetness over the western United States. Experimental seasonal precipitation forecasts were too dry across Southern California (likely due to their over-reliance on La Niña), and the observed above-normal precipitation across Northern and Central California was underpredicted. However, experimental subseasonal forecasts skillfully captured the regime shift from dry to wet conditions in late December 2022 at 2â3 week lead time. During this time, an active MJO shift from phases 4 and 5 to 6 and 7 occurred, which historically tilts the odds toward increased AR activity over California. New experimental seasonal and subseasonal synthesis forecast products, designed to aggregate information across institutions and methods, are introduced in the context of this historic winter to provide situational awareness guidance to western U.S. water managers. © 2024 American Meteorological Society. This published article is licensed under the terms of the default AMS reuse license. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).6 month embargo; first published 08 January 2024This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]