New Optical Properties of Ice Crystals for Multiclass Cloud Microphysics

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Sensitivity experiments of the optical properties of convective systems using a double moment cloud microphysics scheme

Aerodynamic contrails: Microphysics and optical properties

Aerodynamic contrails form when air flows across the wings of subsonic aircraft in cruise. During a short adiabatic expansion phase, high supersaturations trigger burst-like homogeneous ice formation on ambient liquid aerosol particles within a wing depth. Small particles freeze first, because they equilibrate most rapidly. Ambient temperature is the key determinant of nascent aerodynamic contr...

Parameterization of shortwave ice cloud optical properties for various particle habits

[1] The relative importance of ice clouds in the climate system is highly uncertain. Measurements of their microphysical properties are sparse, especially given their complex structure and large variability in particle size, shape, and density. To better understand the role of ice clouds in the climate system, parameterizations of their radiative properties are needed. The shortwave bulk optica...

Ice crystals at cloud top of Arctic mixed-phase clouds

Evidence of ice crystals at cloud top of Arctic boundary-layer mixed-phase clouds derived from airborne remote sensing A. Ehrlich, M. Wendisch, E. Bierwirth, J.-F. Gayet, G. Mioche, A. Lampert, and B. Mayer Johannes Gutenberg-University Mainz, Institute for Atmospheric Physics, Mainz, Germany Lab. for Atmospheric and Space Physics (LASP), University of Colorado, Boulder, USA Lab. de Météorologi...