Small-scale structures in noctilucent clouds observed by lidar
نویسندگان
چکیده
منابع مشابه
First observations of noctilucent clouds by lidar at Svalbard, 78 N
In summer 2001 a potassium lidar was installed near Longyearbyen (78 N) on the north polar island of Spitsbergen which is part of the archipelago Svalbard. At the same place a series of meteorological rockets (“falling spheres”, FS) were launched which gave temperatures from the lower thermosphere to the stratosphere. The potassium lidar is capable of detecting noctilucent clouds (NLCs) and of ...
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From 1997 to 2003, noctilucent clouds (NLC) were observed by lidar above the ALOMAR observatory in Northern Norway (69 N) during a total of 1880 measurement hours. This data set contains NLC signatures for 640 h, covering all local times, even during the highest solar background conditions. After data limitation imposing a threshold value of 4×10−10 m−1 sr−1 for the volume backscatter coefficie...
متن کاملNoctilucent clouds and the mesospheric water vapour
The topic of this paper is the expected (from modelling) and observed sensitivity of the brightness β of noctilucent clouds (NLC) on the ambient water vapour mixing ratio f (H 2 O). Firstly, we show that state-of-the-art models of NLC layer formation predict that in the Arctic summer, a 10% increase of f (H 2 O) in the upper mesosphere should 5 lead to a 22% increase in β. Secondly, we review o...
متن کاملLidar Soundings of Noctilucent Clouds and Temperatures during Day and Night in the Summer Mid-latitude Middle Atmosphere
At the Leibniz-Institute of Atmospheric Physics in Kühlungsborn (54N, 12E) we have developed a daytime capable Rayleigh-Mie-Raman (RMR) lidar for the mesosphere. Temperature soundings are feasible up to approximately 75 km during the day and up to 90 km during the night. Furthermore, measurements are performed at high solar elevation angles of up to ∼60. In 2010 we performed first daylight obse...
متن کاملNoctilucent clouds and the mesospheric water vapour: the past decade
The topic of this paper is the sensitivity of the brightness of noctilucent clouds (NLC) on the ambient water vapour mixing ratio f(H2O). Firstly, we use state-of-the-art models of NLC layer formation to predict NLC brightness changes in response to changes in the 80 km mixing ratio f(H2O) for the two cases of ground-based 532 nm lidar observations at 69 N and for hemispheric satellite SBUV obs...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Solar-Terrestrial Physics
سال: 2020
ISSN: 1364-6826
DOI: 10.1016/j.jastp.2020.105384