| April 2012 |
Meteor count rates during the Lyrids 2012
|
| August 2010 |
6-year mean climatology of Collm radar winds (pdf)
August 2004 - July 2010 mean zonal prevailing winds over Collm. |
| March 2008 |
Semidiurnal tidal signature in sporadic E derived from GPS radio occultations (pdf)
June-August 2007 FORMOSAT-3/COSMIC relative Es layer occurrence (in 1/1000), for a latitude range from 50°-55°N (colour scaling). In the lower part July mean wind shears, given in m/s/km, measured with the Collm meteor radar are shown as isolines. Negative shear values are hatched. Added are SDT phases of Es layer occurrence (open symbols) and wind shear (solid symbols, phase is defined as time of minimum shear). |
| April 2007 |
Meteor head velocity determination See more in Gunters publication in the LIM 2007 report (pdf)
Example of meteor velocities over Collm. |
| April 2007 |
Meteor radar tidal amplitudes presented a EGU Assembly (See here for a
JPG-File) Tidal temperature amplitudes around 90 km. |
| August 2006 |
A detailed presentation of winter 2005/2006
radar winds (seminar work by M. Mieth) September 2005 - March 2006 (pdf, 1.2
MByte) |
| March 2006 |
Prevailing winds over Collm 08/2004 - 02/2006 Collm zonal prevailing wind
Collm meridional prevailing wind
|
| March 2006 |
Correlation of MLT temperatures and meridional
mean winds seen by meteor radar (Poster at EGU - gif)
11-30 day window filtered MLT temperatures and
meridional prevailing winds over Collm
|
| March 2006 |
Poster
at EGU 2006: Mesopause region temperatures in 2005 from Meteor Radar (gif-file).
Seasonal change of daily mean temperatures in
the mesopause region derived from Collm meteor radar measurements compared
with the zonal mean temperatures from the SABER data and monthly means from
the COMMA-model. The light grey lines show the statistical error of the radar
(G. Stober, EGU 2006 Assembly).
|
| September 2005 |
Comparison of scale height variations derived
from meteor radar temperatures with LF-derived plasma scale heights:
Presented in Jacobi, Ch, und D. Kürschner, 2005: Long-period upper mesosphere temperature and plasma scale height variations derived from VHF meteor radar and LF absolute reflection height measurements. Kleinheubacher Tagung, Miltenberg, 26. - 30. September 2005.
|
| July 2005 |
Comparison of Collm meteor radar and LF winds
using a semiempirical approach for LF group retardation First results presented in Jacobi, Ch., C. Viehweg, D. Kürschner, W. Singer, P. Hoffmann and D. Keuer, 2005: Mesosphere/lower thermosphere winds over Central Europe as measured with 4 different Radars. IAGA 2005, Toulouse, 18.-29.7.2005.
Winter 2004/2005 zonal winds over Collm measured with meteor radar vs. LF drifts. |
| March 2005 |
First results on comparing Collm meteor radar
winds with LF winds: Jacobi, Ch., D. Kürschner, K. Fröhlich, K. Arnold and G. Tetzlaff, 2005: Meteor radar wind and temperature measurements over Collm (51.3°N, 13°E) and comparison with co-located LF drift measurements during autumn 2004. Rep. Inst. Meteorol. Univ. Leipzig 36, 98-112. (pdf-file) |
last modification: 2.5.2007