Observations of Stratospheric Aerosol Layers by Optical Radar

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...

Tropical stratospheric aerosol layer from CALIPSO lidar observations

Stratospheric aerosol measurements by dual polarisation lidar

We present measurements of stratospheric aerosol made at Aberystwyth, UK (52.4 N, 4.06 W) during periods of background aerosol conditions. The measurements were made with a lidar system based on a 532 nm laser and two polarisation channels in the receiver. When stratospheric aerosol amounts are very small, as at present, this method is, potentially, free of a number of systematic errors that be...

SCIAMACHY stratospheric aerosol retrieval

G. Taha, D. F. Rault, R. P. Loughman, A. E. Bourassa, and C. von Savigny Science Systems and Applications Inc. Lanham, MD, USA NASA Langley Research Center, Hampton, VA, USA Center for Atmospheric Sciences, Hampton University, Hampton, VA, USA Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Canada Institute of Environmental Physics, University of Bremen, Br...

Stratospheric Aerosol Geoengineering

In response to global warming, one suggested geoengineering response involves creating a cloud of particles in the stratosphere to reflect some sunlight and cool Earth. While volcanic eruptions show that stratospheric aerosols cool the planet, the volcano analog also warns against geoengineering because of responses such as ozone depletion, regional hydrologic responses, whitening of the skies,...