Efficient Radar Forward Operator For Operational Data Assimilation Within The Cosmo Model
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Efficient Radar Forward Operator For Operational Data Assimilation Within The Cosmo Model
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Author : Zeng, Yuefei
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-09-26
Efficient Radar Forward Operator For Operational Data Assimilation Within The Cosmo Model written by Zeng, Yuefei and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-26 with Biography & Autobiography categories.
Doppler radars provide unique 3D information about precipitating clouds in high spatial and temporal resolutions. However, the observed quantities (reflectivity, Doppler velocity and polarization properties) are not directly comparable to the variables of numerical prediction models. In order to enable radar data assimilation, a comprehensive modular radar forward operator has been developed.
Efficient Radar Forward Operator For Operational Data Assimilation Within The Cosmo Model
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Author : Yuefei Zeng
language : en
Publisher:
Release Date : 2020-10-09
Efficient Radar Forward Operator For Operational Data Assimilation Within The Cosmo Model written by Yuefei Zeng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Science categories.
Doppler radars provide unique 3D information about precipitating clouds in high spatial and temporal resolutions. However, the observed quantities (reflectivity, Doppler velocity and polarization properties) are not directly comparable to the variables of numerical prediction models. In order to enable radar data assimilation, a comprehensive modular radar forward operator has been developed. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Radar Forward Operator For Verification Of Cloud Resolving Simulations Within The Cosmo Model
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Author : Jerger, Dorit
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-05-19
Radar Forward Operator For Verification Of Cloud Resolving Simulations Within The Cosmo Model written by Jerger, Dorit and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-19 with Science categories.
In this work, various simulation methods of the effective radar reflectivity factor and its attenuation by atmospheric particles from the variables of the COSMO model have been implemented within a so-called radar forward operator, and its output was compared to measurements from the German radar network. To perform a statistically reliable model verification, contoured frequency by altitude diagrams (CFADs) were used and refined.
Satellite Remote Sensing In Hydrological Data Assimilation
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Author : Mehdi Khaki
language : en
Publisher: Springer Nature
Release Date : 2020-01-02
Satellite Remote Sensing In Hydrological Data Assimilation written by Mehdi Khaki and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-02 with Science categories.
This book presents the fundamentals of data assimilation and reviews the application of satellite remote sensing in hydrological data assimilation. Although hydrological models are valuable tools to monitor and understand global and regional water cycles, they are subject to various sources of errors. Satellite remote sensing data provides a great opportunity to improve the performance of models through data assimilation.
Arctic Mixed Phase Clouds Macro And Microphysical Insights With A Numerical Model
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Author : Loewe, Katharina
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-09-15
Arctic Mixed Phase Clouds Macro And Microphysical Insights With A Numerical Model written by Loewe, Katharina and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-15 with Physics categories.
This work provides new insights into macro- and microphysical properties of Arctic mixed-phase clouds: first, by comparing semi-idealized large eddy simulations with observations; second, by dissecting the influences of different surface types and boundary layer structures on Arctic mixed- phase clouds; third, by elucidating the dissipation process; and finally by analyzing the main microphysical processes inside Arctic mixed-phase clouds.
Convective Precipitation Simulated With Icon Over Heterogeneous Surfaces In Dependence On Model And Land Surface Resolution
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Author : Singh, Shweta
language : en
Publisher: KIT Scientific Publishing
Release Date : 2021-08-16
Convective Precipitation Simulated With Icon Over Heterogeneous Surfaces In Dependence On Model And Land Surface Resolution written by Singh, Shweta and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-16 with Science categories.
The impact of land-surface properties like vegetation, soil type, soil moisture, and the orography on the atmosphere is manifold. These features determine the evolution of the atmospheric boundary layer, convective conditions, cloud evolution and precipitation. The impact of model grid spacing and land-surface resolution on convective precipitation over heterogeneous surfaces is investigated using ICOsahedral Nonhydrostatic (ICON) simulations within the framework of the HD(CP)2 project.
Optimizing Dual Doppler Lidar Measurements Of Surface Layer Coherent Structures With Large Eddy Simulations
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Author : Stawiarski, Christina
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-07-10
Optimizing Dual Doppler Lidar Measurements Of Surface Layer Coherent Structures With Large Eddy Simulations written by Stawiarski, Christina and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-10 with Science categories.
Coherent structures are patterns in the wind field of the atmospheric boundary layer. The deployment of two scanning Doppler lidars facilitates the measurement of the horizontal wind field, but the inherent averaging processes complicate an interpretation of the results. To assess the suitability of this technique for coherent structure detection large-eddy simulations are used as a basis for virtual measurements, and the effects of the lidar technique on the wind field structure are analyzed.
Representation Of Warm Conveyor Belts In Sub Seasonal Forecast Models And The Link To Atlantic European Weather Regimes
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Author : Wandel, Jan Lucas
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-05-25
Representation Of Warm Conveyor Belts In Sub Seasonal Forecast Models And The Link To Atlantic European Weather Regimes written by Wandel, Jan Lucas and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-05-25 with Science categories.
This study systematically investigates the representation of warm conveyor belts (WCBs) in large reforecast data sets of different numerical weather prediction models and evaluates the role of WCBs for the onset and life cycle of Atlantic-European weather regimes. The results emphasize the importance of accurate forecast of WCBs for sub-seasonal prediction on time scales beyond two weeks and tie the low forecast skill of blocked weather regimes over Europe to misrepresented WCBs.
Boundary Layer Processes Producing Mesoscale Water Vapour Variability Over A Mountainous Island
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Author : Adler, Bianca
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-09-12
Boundary Layer Processes Producing Mesoscale Water Vapour Variability Over A Mountainous Island written by Adler, Bianca and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-12 with Physics categories.
Over complex terrain, spatial inhomogeneities of pre-convective atmospheric conditions occur due to convection and mesoscale transport processes. This thesis focuses on the identification of these processes over the mountainous island of Corsica and on the evaluation of their impact on the spatial variability of water vapour, convection-related parameters and the evolution of deep convection by means of observations.
Wind Systems In The Dead Sea And Footprints In Seismic Records
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Author : Lott, Friederike Franziska
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-02-22
Wind Systems In The Dead Sea And Footprints In Seismic Records written by Lott, Friederike Franziska and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-02-22 with Physics categories.
Atmospheric processes, such as wind, impact the ground motion of the earth and have the potential to induce strong broad-band noise in seismological records. In order to quantify the influence of wind on ground motion velocity joint seismological and meteorological measurements were conducted at the Dead Sea.Results reveal a pronounced impact of wind on seismological records. A methodology is presented to account for the dependency of PSD of ground motion velocity on the horizontal wind field.