Clear-air lidar dark band
نویسندگان
چکیده
منابع مشابه
Clear Air Turbulence Detection and Characterisation in the Delicat Airborne Lidar Project
We report on a development of a long-range airborne UV high spectral resolution lidar, intended for the detection and characterisation of clear air turbulence (CAT). The detection of turbulence is based on the measurement of density fluctuations associated with the movement of turbulent air masses. These density fluctuations are measured by the variations in the molecular backscatter coefficien...
متن کاملSpace-borne clear air lidar measurements in the presence of broken cloud
A number of proposed lidar systems, such as ESA’s AEOLUS (formerly ADM) and DIAL missions (e.g. WALES) are to make use of lidar returns in clear air. However, on average, two-thirds of the globe is covered in cloud. Hence, there is a strong likelihood that data from these instruments may be contaminated by cloud. Similarly, optically thick cloud may not be penetrated by a lidar pulse, resulting...
متن کاملStudy of Clear Air Turbulence over Iranian Plato
This study was carried out using two sets of numerical weather forecast data and flight reports for Clear Air Turbulence (CAT) over Iranian Plato to find atmospheric flow patterns favorable to the formation of CAT. The numerical data include five months of AVN analysis with horizontal resolution of 1 degree(about 100 km) and four months forecast data of MM5 model with resolution of 50 km. Impor...
متن کاملRemote Sensing of Air Pollution by Lidar
Recent progresses in remote sensing of atmospheric pollution using the Lidar technique are presented. 2D and 3D analysis of NO, N02, S02, and 0 3 were performed at high sensitivity under emission and immission conditions. Most attractive results were obtained over large urban areas like Lyon, Stuttgart, Ziirich, Geneva and Berlin. New Lidar systems, based on selfdeveloped Flashlamp-pumped Ti:Sa...
متن کاملClear-air turbulence in a changing climate
Atmospheric turbulence causes most weather-related aircraft incidents. Commercial aircraft encounter moderate-or-greater turbulence tens of thousands of times each year worldwide, injuring probably hundreds of passengers (occasionally fatally), costing airlines tens of millions of dollars and causing structural damage to planes. Clear-air turbulence is especially difficult to avoid, because it ...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2018
ISSN: 2100-014X
DOI: 10.1051/epjconf/201817605028