Unit:
Κατεύθυνση Φυσική ΠεριβάλλοντοςLibrary of the School of Science
Author:
Chaniotis Ioannis
Supervisors info:
Γεώργιος Κάλλος, Ομότιμος Καθηγητής, Τμήμα Φυσικής, Σχολή Θετικών Επιστημών ΕΚΠΑ
Μαρία Τόμπρου - Τζέλλα, Καθηγήτρια, Τμήμα Φυσικής, Σχολή Θετικών Επιστημών ΕΚΠΑ
Έλενα Φλόκα, Καθηγήτρια, Τμήμα Φυσικής, Σχολή Θετικών Επιστημών ΕΚΠΑ
Original Title:
Επίδραση των Φυσικών Σωματιδίων στο Σχηματισμό και την Εξέλιξη των Νεφών
Translated title:
A study of the Impact of Natural Suspended Particles in the Formation and Evolution of Clouds
Summary:
Suspended particles of mineral dust and sea salt are known to have profound impact in the evolution of clouds, as well as precipitation behavior in meteorological and climatological scales. The Eastern Mediterranean is an important area of interest due to dust transportation from the Saharan desert, which is common throughout the year. In order to investigate the impact of mineral dust and sea salt on the properties of hydrometeors (liquid & solid) and the alteration of precipitation characteristics, several case studies were conducted with the extensive use of the Integrated Community Limited Area Modeling System (ICLAMS), which includes various parameterizations and numerical schemes of the complex microphysical processes of the forementioned aerosol paricles, as well as the modification of energy budget equations. As a common example, a specific event of dust transportation from Northern Africa to Greece was selected which occurred in late Spring of 2018. The event was followed by medium to heavy rainfall and sparse hailfall, mostly in the greater region of Central Macedonia and Thrace. This study focuses in the impact of dust and salt particles in the formation of clouds, the temporal evolution and characteristics of cloud hydrometeors and precipitation. A three (3) step case study is conducted in order to examine the role of microphysics (CCN nucleation) and radiation (direct and semi-direct).
Main subject category:
Science
Keywords:
Suspended Particulate Matter, Cloud Microphysics, Cloud Condensation and Ice Nuclei, Direct Effect, Indirect Effect, Atmospheric Models
Number of references:
121
