Direct Radiative Effects Of Sea Salt On The Regional Scale
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Direct Radiative Effects of Sea Salt on the Regional Scale
| Author | : Kristina Lundgren |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 264 |
| Release | : 2012 |
| Genre | : Physics |
| ISBN | : 3866447736 |
This thesis aims to quantify the direct radiative effects of sea salt aerosol in the atmosphere. The online coupled regional scale model system COSMO-ART is extended for this objective with respect to the sea salt aerosol. Furthermore, a new sea salt optical parameterisation is developed for both the shortwave and longwave spectrum. Based on numerical simulations with the extended model system, the direct radiative effects of sea salt aerosol are investigated.
Assessing the Aerosol Impact on Southern West African Clouds and Atmospheric Dynamics
| Author | : Deetz, Konrad |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 344 |
| Release | : 2018-01-30 |
| Genre | : Physics |
| ISBN | : 3731507447 |
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.
Separating the Aerosol Effect in Case of a "Medicane"
| Author | : Kraut, Isabel |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 196 |
| Release | : 2015-08-06 |
| Genre | : Physics |
| ISBN | : 3731504057 |
This work addresses the interactions of aerosols, clouds and dynamics in case of a so-called Medicane. This type of cyclone occurs over the Mediterranean Sea, showing similarities to Hurricanes over the Atlantic and Pacific Ocean. Due to the high wind speed of the Medicane, a large amount of sea salt particles is emitted over the sea. This can influence the development of the Medicane, its associated clouds, and precipitation.
Wind Systems in the Dead Sea and Footprints in Seismic Records
| Author | : Lott, Friederike Franziska |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 270 |
| Release | : 2017-02-22 |
| Genre | : Physics |
| ISBN | : 3731505967 |
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.
Near future changes of compound extreme events from an ensemble of regional climate simulations
| Author | : Sedlmeier, Katrin |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 200 |
| Release | : 2020-01-16 |
| Genre | : Science |
| ISBN | : 3731504766 |
Atmospheric Moisture Effects on Deep Convection in the Western Mediterranean
| Author | : Caldas-Alvarez, Alberto |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 262 |
| Release | : 2019-10-24 |
| Genre | : Science |
| ISBN | : 3731509474 |
Contrails and Climate Engineering - Process Studies on Natural and Artificial High-Level Clouds and Their Impact on the Radiative Fluxes
| Author | : Gruber, Simon |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 282 |
| Release | : 2019-03-22 |
| Genre | : Physics |
| ISBN | : 3731508966 |
Two aspects of anthropogenic impacts on the atmosphere are investigated using means of numerical weather prediction. A case study is conducted to estimate the impact of such artificial clouds on the incoming solar radiation at the Earth's surface with special regard to photovoltaic power production. Furthermore, simulations are performed to assess the efficacy of injecting particles into the Arctic troposphere with the aim of modifying cirrus clouds for counteracting global warming.
Wind Systems and Energy Balance in the Dead Sea Valley
| Author | : Metzger, Jutta |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 236 |
| Release | : 2017-10-17 |
| Genre | : Physics |
| ISBN | : 3731506998 |
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.
Diagnosing the Downstream Impact of Extratropical Transition Using Multimodel Operational Ensemble Prediction Systems
| Author | : Julia Henriette Keller |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 272 |
| Release | : 2014-10-16 |
| Genre | : Science |
| ISBN | : 3866449844 |
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.
