The anthropogenic emissions of greenhouse gases affect not only the weather and climate
in the troposphere; they affect also long-term trends in the mesosphere-thermosphere …

The 2020 summer season had more frequent than usual occurrences of noctilucent clouds
(NLCs) in the Northern Hemisphere at middle latitudes (45–50° N), with the lowest latitude at …

A sporadic case of noctilucent clouds (NLCs) was observed unexpectedly on the night of the
6–7 July 2020 in Beijing (40° 2′ N, 115° 30′ E). The noticeable wavy structures and …

The results of simultaneous measurements of noctilucent clouds (NLC) position in a number
of ground-based locations are presented. Observational data of 14 bright NLC events over 5 …

Sky brightness data have been widely used to document the light pollution and to localise
the direction of the sun during both dawn and dusk twilight. The use of the most common …

Observations show that mesospheric clouds (MCs) have been increasing in recent decades,
presumably due to increased mesospheric water vapor which is mainly caused by greater …

A rare noctilucent cloud (NLC) event was observed at 48.8∘ N, 13.7∘ E above GERman
Experimental Seismic System station in southern Germany on 18/19 July 2016 using the …

We suggest the procedure of building the maps of noctilucent clouds (NLC) zonal and
meridional velocity, mean altitude and particle size based on three-color photometry by …

This paper describes the wide-field three-color observations of an expanded field of
noctilucent clouds modulated by a one-dimensional mode of gravity wave. Long wave crests …

The horizontal movement of polar mesospheric clouds (PMCs) is examined with data from
Geostationary‐Earth‐Orbit (GEO) meteorological satellite Himawari‐8 using a cloud tracking …