Diagnosing the Downstream Impact of Extratropical Transition Using Multimodel Operational Ensemble Prediction Systems PDF Download
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Author: Julia Henriette Keller
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Julia Henriette Keller
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Julia Henriette Keller
Publisher: KIT Scientific Publishing
ISBN: 3866449844
Category : Science
Languages : en
Pages : 272
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Book Description
The study examines the predictability during the extratropical transition (ET) of tropical cyclones using the THORPEX Interactive Grand Global Ensemble (TIGGE), a multimodel ensemble prediction system (EPS). It is shown that TIGGE exhibits more possible development scenarios than a single EPS. By analysing the eddy kinetic energy budget of forecast scenarios for two ET cases, extracted from an EPS, the impact of the transitioning tropical cyclones on the midlatitude flow is studied in detail.
Author: Metzger, Jutta
Publisher: KIT Scientific Publishing
ISBN: 3731506998
Category : Physics
Languages : en
Pages : 236
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Book Description
A new measurement concept was developed to determine the amount, variability and governing factors of evaporation from the Dead Sea. Additionally, a suitable indirect method to calculate evaporation is presented. Results show that vapour pressure deficit and wind speed are governing evaporation and that the diurnal cycle is determined by three distinct diurnal wind systems. The occurrence frequency and intensity of the wind systems are determined by local differential cooling and heating.
Author: Zeng, Yuefei
Publisher: KIT Scientific Publishing
ISBN: 3731501287
Category : Biography & Autobiography
Languages : en
Pages : 256
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Book Description
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.
Author: Deetz, Konrad
Publisher: KIT Scientific Publishing
ISBN: 3731507447
Category : Physics
Languages : en
Pages : 344
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Book Description
By using COSMO-ART, highly resolved process study simulations for 2-3 July 2016 are conducted to assess the aerosol effect on the meteorological conditions of southern West Africa. The meteorological phenomenon Evening Monsoon Flow Enhancement (EMFE) is identified as highly susceptible to the aerosol direct effect, leading to a spatial shift of the EMFE front. In a second aerosol feedback chain the aerosol variation leads to a temporal shift of the stratus-to-cumulus transition.
Author: Pickl, Moritz
Publisher: KIT Scientific Publishing
ISBN: 373151236X
Category : Science
Languages : en
Pages : 250
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Book Description
Warm conveyor belts (WCBs) are weather systems that substantially modulate the large-scale extratropical circulation. As they can amplify forecast errors and project them onto the Rossby wave pattern, they are of high relevance for numerical weather prediction. This work elaborates on two aspects of WCBs in the context of ensemble forecasts: (1) sensitivities of WCBs to the representation of initial condition and model uncertainties, and (2) the role of WCBs for forecast error growth.
Author: Sedlmeier, Katrin
Publisher: KIT Scientific Publishing
ISBN: 3731504766
Category : Science
Languages : en
Pages : 200
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Book Description
Author: Lott, Friederike Franziska
Publisher: KIT Scientific Publishing
ISBN: 3731505967
Category : Physics
Languages : en
Pages : 270
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Book Description
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.
Author: Loewe, Katharina
Publisher: KIT Scientific Publishing
ISBN: 3731506866
Category : Physics
Languages : en
Pages : 174
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Book Description
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.
Author: Stawiarski, Christina
Publisher: KIT Scientific Publishing
ISBN: 373150197X
Category : Science
Languages : en
Pages : 262
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Book Description
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.
