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Showing 1 to 16 of 16 for “"Orographic Precipitation"”.
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Orographic Precipitation Over the Island of Oahu
To demonstrate the relationship between orographic vertical motion and precipitation, a linear diagnostic upslope model has been developed to provide a high-resolution picture of terrain induced vertical motion and precipitation over the Island of Oahu. The model is called the Hawaiian Orographic …
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Dynamic and Thermodynamic Controls on the Amount and Distribution of Orographic Precipitation
… controlling the amount and distribution of precipitation in mountainous terrain. In Chapter 2, linear theory and numerical simulations are used to investigate how the tropopause affects the vertical structure of mountain waves, and in turn orographic precipitation. In idealized numerical …
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An observational and modeling study of a heavy orographic precipitation event over the Oregon Cascades
… opportunity for the investigation of a heavy precipitation event over complex terrain. The collection of thermodynamic and kinematic observations concomitantly with microphysical measurements also provided a unique chance to isolate errors in a mesoscale scale model's microphysical …
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The Numerical Simulation of Orographic Storms (Wales, Seeder-Feeder Mechanism, Bergeron)
… the importance of the seeder-feeder mechanism of orographic precipitation enhancement, proposed by Bergeron (1965). However, the latter study also indicated that the sensitivity of the enhancement to the low-level wind speed is much greater than predicted by the seeder-feeder model of Bader and …
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Tropical orographic rainfall regimes according to the tropical rainfall measuring mission
Observing precipitation in tropical regions of complex terrain is a challenging problem. While ground-based instrumentation including rain gauge networks and radar data offer some insights, the lack of spatially complete gauge networks and radar artifacts such as severe beam blockage lead to large …
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Mult-Scale Jet/Front Interactions that Organize Typical Cloud Seeding Environments in the Sierra Nevada
… favors cloud seeding which can enhance the local orographic precipitation. Most of the time, however, water vapor is not that significant and therefore forecasting cloud seeding conditions is quite challenging. Two mutually interacting frontal structures that contribute to the formation of the …
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Tectonic-Climate Interactions And Glacial History Within The Chugach And Kenai Mountains, Alaska
… combination of rock uplift and distribution of precipitation. This relationship attributes fluctuations in climate to the erosion of orogens, sedimentation rates, and geodynamics of the crust. Glaciers are the most effective climate driven erosive processes, where the frequency of glacial …
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Land surface and orographic controls on precipitation patterns in the Sierra Madre Occidental and Western Ghats
… atmospheric responses, such as soil moisture and precipitation. As global precipitation patterns change, the regions that experience high degrees of coupling between the land surface and atmosphere are likely to be impacted most. Within this study, we focus on two regions where we suspect coupling …
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A Thermochronological Investigation of Orogenic Architecture, Kinematics, and Tectonic-Climatic Interactions within the St. Elias Orogen, Alaska
… and is more narrowly focused than the zone of orographic precipitation. Augmented glacial erosion around glacial ELA also coincided with a regional shift in deformation away from prominent forethrusts including the North American-Yakutat terrane suture (Chugach St. Elias fault) and the seaward …
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Aerosol-cloud-precipitation interaction based on remote sensing and cloud-resolving modeling over the Central Himalayas
… Central Himalayan region experiences pronounced orographic precipitation related to the South Asian summer monsoon, typically occurring from June to September. Atmospheric aerosols can influence regional and global climate through aerosol-radiation (ARI) and aerosol-cloud interactions (ACI). The …
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WRF-based dynamical downscaling over High Mountain Asia
… were compared with other commonly used gridded precipitation data sets (reanalysis data, satellite retrieval, and interpolated in-situ observations), over a sub-region in HMA with rugged terrain. Results indicate the added value of the HAR v2 and HAR v2 2 km since they are the only products that …
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The orogenic evolution of the Central Kyrgyz Tien Shan
… across the range, which in turn lead to enhanced orographic precipitation. These wetter conditions have been inferred from stable isotope data collected in the two magnetostratigraphically-dated sections in the Issyk Kul basin. Subsequently, in the late Miocene (~12‒5 Ma), more mountain ranges and …
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Modification of Precipitation in Mid-Latitude Cyclones Passing over a Coastal Mountain Range
… range, the processes producing their clouds and precipitation are modified, leading to considerable spatial variability in precipitation amount and composition. Surface, radar, and aircraft observations from the 2015-16 Olympic Mountains Experiment (OLYMPEX) field campaign and realistic, …
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Characterization and modeling of aerosol-cloud interactions toward the improvement of rainfall estimation in high mountains
<p>In high elevated regions, ground-based precipitation measurements are scarce or non-existing. Remote sensing estimates are prone to underestimation due to a lack of sensitivity to light precipitation and ground-clutter contamination of radar signals by steep terrain. The latter creates a blind …
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Assessing the Reliability of Integrating global data with the GEOframe-NewAGE hydrological model
Ground-based precipitation measurements are essential for meteorological and hydrological studies; however, they face challenges such as spatial variability, limited coverage, and instrument precision. In contrast, global precipitation products derived from Earth observation (EO) and reanalysis …
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CENOZOIC EXTENSION OF THE LAKE TANGANYIKA RIFT, EAST AFRICA: STRUCTURES, TECTONOSTRATIGRAPHY AND PALEOENVIRONMENTAL RECONSTRUCTION
… evolution with the Linear Upslope Model for orographic precipitation to analyze and document the topographic evolution and hydrological connectivity of Lakes Tanganyika and Rukwa in the vicinity of the Rungwe volcano. The analysis suggests that as climate fluctuates, two active rift lakes …