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RISOrographic Clouds in Terrain-Blocked Flows: An Idealized Modeling Study
Publisher: American Meteorological Society
Abstract: Idealized numerical simulations of moist strongly stratified flow over topography are used to study the processes that control orographic clouds in terrain-blocked flows as a joint function of the nondimensional flow ...
Constraining Supersaturation and Transport Processes in a South American Cold-Air Outbreak Using Stable Isotopologues of Water Vapor
Publisher: American Meteorological Society
Abstract: n situ measurements of water vapor isotopic composition from the subtropical Chilean Andes, supported by mesoscale model simulations and diagnostic analyses, document the processes governing the transport of dry air and ...
A Stochastic Model for Diagnosing Subtropical Humidity Dynamics with Stable Isotopologues of Water Vapor
Publisher: American Meteorological Society
Abstract: he humidity of the free troposphere can be modeled, to first order, in terms of cold-point dehydration, followed by moistening via mixing with boundary layer air. The relative balance between these processes is of prime ...
Moist Dynamics and Orographic Precipitation in Northern and Central California during the New Year’s Flood of 1997
Publisher: American Meteorological Society
Abstract: The dynamics of moist orographic flows during the January 1997 floods in northern and central California are investigated using numerical simulations computed with the fifth-generation Pennsylvania State University?National ...
A Last Saturation Analysis of ENSO Humidity Variability in the Subtropical Pacific
Publisher: American Meteorological Society
Abstract: Water vapor tracers of last saturation were used in an atmospheric tracer transport model to evaluate ENSO variability in the generation of the dry air that defines the subtropical middle troposphere over the North Pacific. ...
Summertime Moisture Transport to the Southern South American Altiplano: Constraints from In Situ Measurements of Water Vapor Isotopic Composition
Publisher: American Meteorological Society
Abstract: ustral summer transport of water vapor to the southern South American Altiplano is investigated using in situ measurements of water vapor isotopic composition collected from 1 November 2012 to 10 February 2013 on the ...
Diagnosis of Zonal Mean Relative Humidity Changes in a Warmer Climate
Publisher: American Meteorological Society
Abstract: The zonal mean relative humidity response to a doubling of CO2 in a climate model is examined using a global climate model and an offline tracer transport model. Offline tracer transport model simulations are driven by the ...
Diagnosis of Subtropical Humidity Dynamics Using Tracers of Last Saturation
Publisher: American Meteorological Society
Abstract: A technique for diagnosing the mechanisms that control the humidity in a general circulation model (GCM) or observationally derived meteorological analysis dataset is presented. The technique involves defining a large ...
Variations in Tropical Cyclone Genesis Factors in Simulations of the Holocene Epoch
Publisher: American Meteorological Society
Abstract: he thermodynamic factors related to tropical cyclone genesis are examined in several simulations of the middle part of the Holocene epoch when the precession of Earth?s orbit altered the seasonal distribution of solar ...
Tropical Cyclone Genesis Factors in Simulations of the Last Glacial Maximum
Publisher: American Meteorological Society
Abstract: arge-scale environmental factors that favor tropical cyclogenesis are calculated and examined in simulations of the Last Glacial Maximum (LGM) from the Paleoclimate Modelling Intercomparison Project Phase 2 (PMIP2). Despite ...