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Numerical Simulation Of The Mesoscale Air Sea Interaction Over The Western Pacific Warm Pool
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Book Synopsis Numerical Simulation of the Mesoscale Air-sea Interaction Over the Western Pacific Warm Pool by : Shaowu Bao
Download or read book Numerical Simulation of the Mesoscale Air-sea Interaction Over the Western Pacific Warm Pool written by Shaowu Bao and published by . This book was released on 2002 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: western Pacific warm pool, convection, air sea interaction.
Book Synopsis Numerical Simulation of the Mesoscale Air-Sea Interaction Over the Western Pacific Warm Pool by :
Download or read book Numerical Simulation of the Mesoscale Air-Sea Interaction Over the Western Pacific Warm Pool written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research is to improve our understanding of the air-sea interaction processes over the region of western Pacific warm pool and ultimately improve weather and climate predictions. To achieve this goal, an air-sea coupled numerical model that includes the momentum, heat and freshwater fluxes across the air-sea interface is developed by combining the Advanced Regional Prediction System (ARPS) and the Princeton Ocean Model (POM). First, a squall line system observed during the Tropical Ocean Global Atmosphere/Coupled Ocean-Atmosphere Response Experiment (TOGA/COARE) Intensive Observation Period (IOP) is simulated. The simulation results are in agreement with the observations. Sensitivity experiments reveal that the orientation of the initial perturbation can affect the development of the squall line. Inclusion of ice microphysics and surface fluxes affects the strength and extent of the simulated downdraft-induced low level cold air pool. Then, the ocean's response to precipitation is investigated using the POM model. The results show that the rainfall-induced heat and salinity gradients cause a thin low density, low temperature stable layer near sea surface. The rainfall-induced stable layer near the surface diminishes the downward transfer of the effects of the atmospheric forcing. This causes the effects of the atmospheric forcing to be concentrated accumulate near the sea surface. Because of this rainfall-induced shallow (about 10 m) stable layer, the sea surface responds to atmospheric forcing much faster than it would do without the rainfall-induced stable layer. Finally, the air sea coupled system is used to investigate the ocean's response to an observed squall line precipitation process and the feedback effects of the sea surface temperature (SST) variation on the atmosphere. The results show that the SST feedback effect does not have a significant influence on the local existing atmospheric convection. However, the feedback effects have sign.
Book Synopsis Air-sea Interaction in the Warm-pool System of the Western Pacific Ocean by : R. Lukas
Download or read book Air-sea Interaction in the Warm-pool System of the Western Pacific Ocean written by R. Lukas and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Air-sea Interaction in Tropical Western Pacific by : Jiping Chao
Download or read book Air-sea Interaction in Tropical Western Pacific written by Jiping Chao and published by . This book was released on 1990 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Impact of Air-sea Interactions on the Simulation of Tropical Intraseasonal Variability by : Kathy Pegion
Download or read book The Impact of Air-sea Interactions on the Simulation of Tropical Intraseasonal Variability written by Kathy Pegion and published by . This book was released on 2007 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modification of the 30-60 Day Oscillation by Air-sea Interaction in the Warm Pool Region of the Western Pacific During the Northern Summer by : R. Kawamura
Download or read book Modification of the 30-60 Day Oscillation by Air-sea Interaction in the Warm Pool Region of the Western Pacific During the Northern Summer written by R. Kawamura and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large-scale Air-sea Interactions in the Tropical Western Pacific on Interannual and Intraseasonal Time Scales by : Ryuichi Kawamura
Download or read book Large-scale Air-sea Interactions in the Tropical Western Pacific on Interannual and Intraseasonal Time Scales written by Ryuichi Kawamura and published by . This book was released on 1990 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atmospheric Turbulence and Mesoscale Meteorology by : Evgeni Fedorovich
Download or read book Atmospheric Turbulence and Mesoscale Meteorology written by Evgeni Fedorovich and published by Cambridge University Press. This book was released on 2004-10-21 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading researchers come together in this 2004 text to survey recent developments in atmospheric turbulence and mesoscale meteorology.
Book Synopsis Observation, Theory And Modeling Of Atmospheric Variability - Selected Papers Of Nanjing Institute Of Meteorology Alumni In Commemoration Of Professor Jijia Zhang by : Xun Zhu
Download or read book Observation, Theory And Modeling Of Atmospheric Variability - Selected Papers Of Nanjing Institute Of Meteorology Alumni In Commemoration Of Professor Jijia Zhang written by Xun Zhu and published by World Scientific. This book was released on 2004-02-25 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains tutorial and review articles as well as specific research letters that cover a wide range of topics: (1) dynamics of atmospheric variability from both basic theory and data analysis, (2) physical and mathematical problems in climate modeling and numerical weather prediction, (3) theories of atmospheric radiative transfer and their applications in satellite remote sensing, and (4) mathematical and statistical methods. The book can be used by undergraduates or graduate students majoring in atmospheric sciences, as an introduction to various research areas; and by researchers and educators, as a general review or quick reference in their fields of interest.
Book Synopsis Air-sea Interaction at the Synoptic- and the Meso-scale by : Aimie Moulin
Download or read book Air-sea Interaction at the Synoptic- and the Meso-scale written by Aimie Moulin and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis considers air-sea interaction, due to momentum exchange, in an idealized but consistent model. Two superposed one-layer fine-resolution shallow-water models are numerically integrated. The upper layer represents the atmosphere and the lower layer the ocean. The interaction is only due to the shear between the two layers. The shear applied to the ocean is calculated using the velocity difference between the ocean and the atmosphere.The frictional force between the two-layers is implemented using the quadratic drag law. Three idealized configurations are explored.First, a new mechanism that induces barotropic instability in the ocean is discussed. It is due to air-sea interaction with a quadratic drag law and horizontal viscous dissipation in the atmosphere. I show that the instability spreads to the atmosphere. The preferred spatial scale of the instability is that of the oceanic baroclinic Rossby radius of deformation.It can only be represented in numerical models, when the dynamics at this scale is resolved in the atmosphere and the ocean.In one-way interaction the shear applied to the atmosphere neglectsthe ocean dynamics, it is calculated using the atmospheric wind, only. In two-way interaction it is opposite to the shear applied to the ocean.In the one-way interaction the atmospheric shear leads to a barotropic instability in the ocean. The instability in the ocean is amplified, in amplitude and scale, in two-way interaction and also triggers an instability in the atmosphere.Second, the air-sea interaction at the atmospheric synoptic and mesoscale due to momentum transfer, only, is considered. Experiments with different values of the surface friction drag coefficient are performed, with a different atmospheric forcing from the first configuration, that leads to a turbulent dynamics in the atmosphere and the ocean. The actual energy loss of the atmosphere and the energy gain by the ocean, due to the inter-facial shear,is determined and compared to the estimates based on average speeds.The correlation between the vorticity in the atmosphere and the ocean is determined. Results differ from previous investigations where the exchange of momentum was considered at basin scale. It is shown that the ocean has a passive role, absorbing kinetic energy at nearly all times and locations.Due to the feeble velocities in the ocean, the energy transfer depends only weakly on the ocean velocity. The ocean dynamics leaves nevertheless its imprint in the atmospheric dynamics leading to a quenched disordered state of the atmosphere-ocean system, for the highest value of the friction coefficient considered. This finding questions the ergodic hypothesis, which is at the basis of a large number of experimental, observational and numericalresults in ocean, atmosphere and climate dynamics.The last configuration considers the air-sea interaction, due to momentum exchange, around a circular island. In todays simulations of the ocean dynamics, the atmospheric forcing fields are usually too coarse to include the presence of smaller islands (typically
Book Synopsis Numerical Studies of the Air-sea Interaction Processes in Intense Tropical Systems Using the Coupled Ocean/atmosphere Mesoscale Prediction System by : Xiaodong Hong
Download or read book Numerical Studies of the Air-sea Interaction Processes in Intense Tropical Systems Using the Coupled Ocean/atmosphere Mesoscale Prediction System written by Xiaodong Hong and published by . This book was released on 1998 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Air-Sea Interaction in the Liqurian Sea: Numerical Simulations and In-Situ Data in the Summer of 2007 by :
Download or read book Air-Sea Interaction in the Liqurian Sea: Numerical Simulations and In-Situ Data in the Summer of 2007 written by and published by . This book was released on 2010 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ experimental data and numerical model results are presented from the Ligurian Sea in the northwestern Mediterranean. Here surface winds are light in summer except during occasional Mistral events which are often associated with cyclogenesis in the lee of the Alps. The Ligurian Sea Air-Sea Interaction Experiment (LASIE07) took place in June 2007. with a focus on the coincident measurement of oceanic and atmospheric boundary layer properties. To help interpret the observational results we use the Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS(Registered)), developed at the Naval Research Laboratory. This system includes an atmospheric sigma coordinate, nonhydrostatic model, coupled to a hydrostatic sigma-z level ocean model (Naval Coastal Ocean Model), using the Earth System Modeling Framework (ESMF). Both models are at high resolution: the inner nest of the COAMPS domain is on a 4 km grid with 40 vertical levels, and that for NCOM on a 2km grid with 50 levels. The coupled model system is evaluated for a month long simulation which includes data assimilation in the atmosphere but not the ocean. Correlation coefficients between model and observed values for near-surface wind speeds, and turbulent heat fluxes are above 0.5 (significant at 99%) at a deep water mooring. A comparison of the coupled run with an uncoupled atmospheric run using analysis SST at the surface boundary, both of which use atmospheric data assimilation, does not reveal significant or systematic differences.
Book Synopsis Air-Sea Interaction by : G. T. Csanady
Download or read book Air-Sea Interaction written by G. T. Csanady and published by Cambridge University Press. This book was released on 2001-03-19 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air-Sea Interaction: Laws and Mechanisms provides a comprehensive account of how the atmosphere and the ocean interact to control the global climate, what physical laws govern this interaction, and what are its prominent mechanisms. It is mainly directed towards graduate students and research scientists in meteorology, oceanography, and environmental engineering. The book will be of value on entry level courses in meteorology and oceanography, and also to the broader physics community interested in the treatment of transfer laws, and thermodynamics of the atmosphere and ocean.
Book Synopsis Air-Sea Interaction at Contrasting Sites in the Eastern Tropical Pacific: Mesoscale Variability and Atmospheric Convection at 10 Deg N. by :
Download or read book Air-Sea Interaction at Contrasting Sites in the Eastern Tropical Pacific: Mesoscale Variability and Atmospheric Convection at 10 Deg N. written by and published by . This book was released on 2007 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of ocean dynamics in driving air-sea interaction is examined at two contrasting sites on l25 deg W in the eastern tropical Pacific Ocean using satellite data and data from two air-sea interaction moorings. Analysis reveals marked differences in the role of ocean dynamics in modulating sea surface temperature (SST). At a near-equatorial site (3 deg S), the 1997-1998 El Nino event dominated the evolution of SST and surface heat fluxes, and it is found that wind-driven southward Ekman transport was important in the local transition from El Nino to La Nina conditions At a l0 deg N site near the summertime position of the Inter-tropical Convergence Zone, oceanic mesoscale motions played an important role in modulating SST at intraseasonal (50- to 100-day) timescales. The characteristics and possible generation mechanisms of this mesoscale variability are examined. Focusing on l0 deg N in the eastern tropical Pacific, the hypothesis that mesoscale oceanic SST variability can systematically influence cloud properties is investigated using several satellite data products. A statistically significant relationship between SST and columnar cloud liquid water and surface solar radiation is identified within the wavenumber-frequency band corresponding to oceanic Rossby waves.
Book Synopsis Learning to Predict Climate Variations Associated with El Nino and the Southern Oscillation by : National Research Council
Download or read book Learning to Predict Climate Variations Associated with El Nino and the Southern Oscillation written by National Research Council and published by National Academies Press. This book was released on 1997-01-12 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The TOGA (Tropical Ocean and Global Atmosphere) Program was designed to study short-term climate variations. A 10-year international program, TOGA made El Nino a household word. This book chronicles the cooperative efforts of oceanographers and meteorologists, several U.S. government agencies, many other nations, and international scientific organizations to study El Nino and the Southern Oscillation (ENSO). It describes the progression from being unable to detect the development of large climate variations to being able to make and use rudimentary climate predictions, especially for some tropical countries. It examines the development of the TOGA Program, evaluates its accomplishments, describes U.S. participation in the program, and makes general recommendations for developing better understanding and predictions of climate variations on seasonal to interannual time scales.
Book Synopsis Regimes of Local Air-sea Interactions and Implications for Performance of Forced Simulations by : Renguang Wu
Download or read book Regimes of Local Air-sea Interactions and Implications for Performance of Forced Simulations written by Renguang Wu and published by . This book was released on 2006 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Air-sea Interaction at Contrasting Sites in the Eastern Tropical Pacific by : John Thomas Farrar
Download or read book Air-sea Interaction at Contrasting Sites in the Eastern Tropical Pacific written by John Thomas Farrar and published by . This book was released on 2006 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of ocean dynamics in driving air-sea interaction is examined at two contrasting sites on 125°W in the eastern tropical Pacific Ocean using data from the Pan American Climate Study (PACS) field program. Analysis based on the PACS data set and satellite observations of sea surface temperature (SST) reveals marked differences in the role of ocean dynamics in modulating SST. At a near-equatorial site (3°S), the 1997-1998 El Nifio event dominated the evolution of SST and surface heat fluxes, and it is found that wind-driven southward Ekman transport was important in the local transition from El Nifio to La Nifia conditions. At a 10'N site near the summertime position of the Inter-tropical Convergence Zone, oceanic niesoscale motions played an important role in modulating SST at intraseasonal (50- to 100-day) timescales, and the buoy observations suggest that there are variations in surface solar radiation coupled to these mesoscale SST variations. This suggests that the mesoscale oceanic variability may influence the occurrence of clouds. The intraseasonal variability in currents, sea surface height, and SST at the northern site is examined within the broader spatial and temporal context afforded by satellite data.
