Collm Meteor Radar

The mesosphere/lower thermosphere (MLT) is one of the scientifically most challenging regions of the atmosphere. The MLT is the region where wave-wave and wave-mean flow interaction processes lead to a mean circulation regime that is extremely far from radiative equilibrium. Although radar measurements of MLT winds are possible since more than half a century, our current knowledge on MLT dynamics is still far from complete, mostly due to incomplete coverage of the global wind field by grond-based remote sensing system.

As a contribution to our knowledge of MLT dynamics a SKiYMET meteor radar is operated at Collm Observatory (51.3°N, 13°E) continuously since August 2004. The measurements base on specular reflections of VHF radio signals on ionised meteor trails. They deliver meteor parameters, hourly wind information in the height range 80-100 km and daily mean temperatures near the mesopause. Together with the LF wind measurements performed at Collm 1959-2008 a unique MLT circulation parameter dataset is available at Collm.

Wind

Meteor Flux

Meteor Analyse

Diagramm Wind nicht vorhanden Diagramm Flux nicht vorhanden Analyse nicht vorhanden

please click on the figures for a better resolution

All data must be considered as preliminary. They are provided for information only and must be validated by the issuing authority before use!

Selected publications are available at http://home.uni-leipzig.de/jacobi/collm/fo_radar.htm
More information on our MLT research is available on C. Jacobis homepage.

29.07.2021
13:11 Uhr
MEZ
Leipzig
Sonne

Temperatur
Leipzig
Tendenz
25.2 °C
1.3 K/h
Collm
Tendenz
21.6 °C
0.2 K/h
Rel. Feuchte
Leipzig35.6 %
Collm50.1 %
Taupunkt
Leipzig8.9 °C
Collm10.8 °C
Luftdruck
Leipzig
Tendenz (3h)
1009.7 hPa
-0.2 hPa
Collm
Tendenz (3h)
1009.5 hPa
-0.3 hPa

Niederschlag
Leipzig
letzte Stunde0.0 mm
letzte 24 h
Art
0.1 mm
meist
Wind Mittel
(1 min)
Leipzig5.4 m/s
Collm5.4 m/s
Wind Böen
(1 min max)
Leipzig7.8 m/s
Collm9.4 m/s
Windrichtung
LeipzigSW
CollmW

Temperatur
5 cm üb. Boden
Leipzig25.1 °C
Bodentemp.
Leipzig
10 cm22.3 °C
20 cm21.5 °C
50 cm20.8 °C
100 cm19.3 °C

Strahlung
Leipzig
Global1004.0 W/m²
Himmel239.0 W/m²
terrestrisch368.2 W/m²
Sonnenaufgang 04:35
Sonnenuntergang 19:58

(Hinweise zur Datenbasis)

Daten: LIM, letzte Änderungen 10.06.2021 durch Falk Kaiser