2001 - 2004

Introduction (go to top of page)

An introduction to the objectives of the subprogram
 

Publications related to the project (go to top of page)

Kürschner, D., and Ch. Jacobi, 2005: The mesopause region wind field over Central Europe in 2003 and comparison with a long-term climatology. Adv. Space Res., in print.

Jacobi, Ch., K. Fröhlich, and A. Pogoreltsev, 2005: Quasi two-day-wave modulation of gravity wave flux and consequences for the planetary wave propagation in a simple circulation model. J. Atmos. Solar-Terr. Phys., accepted.

Fröhlich, K., Ch. Jacobi, und A.I. Pogoreltsev, 2005: Planetary wave transience effects on the zonal mean flow. Adv. Space Res., accepted.

Jacobi, Ch., and D. Kürschner, 2005:  Long-term measurements of nighttime LF radio wave reflection heights over Central Europe. Adv. Radio Sci., 3, 427-430.

Merzlyakov, E.G., Yu.I. Portnyagin, Ch. Jacobi, I. Fedulina, N.J. Mitchell, B.L. Kashcheyev, A.N. Oleynikov, and A.H. Manson, 2005: On the day-to-day wind and semidiurnal tide variations at heights of the mid-latitude summer mesopause: Zonal wavenumber estimations and its consequences, case-study in 1998. J. Atmos. Solar-Terr. Phys. 67, 535-551.

Jacobi, Ch., K. Fröhlich and A. Pogoreltsev, 2005: Gravity wave flux modulation by planetary waves in a circulation model. Rep. Inst. Meteorol. Univ. Leipzig 36, 113-124. (pdf-file)

Merzlyakov, E.G., and Ch. Jacobi, 2004: Quasi-two-day wave in an unstable summer atmosphere – some numerical results on excitation and propagation. Ann. Geophysicae 22, 1917-1929.

Schmidt, H., G.P. Brasseur, and the MEDEC-Team, 2004: Mesospheric Dynamics, Energetics and Chemistry (MEDEC). AFO2000 Newsletter 7, 3-7.

Pancheva, D., N.J. Mitchell, A.H. Manson, C.E. Meek, Ch. Jacobi, Yu. Portnyagin, E. Merzlyakov, W.K. Hocking, J. MacDougall, W. Singer, K. Igarashi, R.R. Clark, D.M. Riggin, S.J. Franke, D. Kürschner, A.N. Fahrutdinova, A.M. Stepanov, B.L. Kashcheyev, A.N. Oleynikov, and H.G. Muller, 2004: Variability of the quasi-2-day wave observed in the MLT region during the PSMOS campaign of June–August 1999. J. Atmos. Solar-Terr. Phys.  66, 539-565.

Kürschner, D., and Ch. Jacobi, 2004: Unexpectedly small semidiurnal tidal wind amplitudes in the midlatitude mesopause region during September 2002. Ann. Geophysicae 22, 701-704. (see also some results here) 

Kürschner, D., und Ch. Jacobi, 2004: A long-term record of sudden phase anomalies at Collm. Rep. Inst. Meteorol. Univ. Leipzig 34, 89-96.

Fröhlich, K., and Ch. Jacobi, 2004: The solar cycle in the middle atmosphere: changes of the mean circulation and of propagation conditions for planetary waves. Rep. Inst. Meteorol. Univ. Leipzig 34, 106-117.

Kürschner, D., and Ch. Jacobi, 2003: Quasi-biennial and decadal variability obtained from long-term measurements of nighttime radio wave reflection heights over central Europe. Adv. Space Res. 32, 1701-1706, doi: 10.1016/S0273-1177(03)00773-2.

Fröhlich, K., A. Pogoreltsev and Ch. Jacobi, 2003: Numerical simulation of tides, Rossby and Kelvin waves with the COMMA-LIM model. Adv. Space Res. 32, 863-868, doi:10.1016/S0273-1177(03)00416-2.

Fröhlich, K., and Ch. Jacobi, 2003: Der solare Zyklus in der mittleren Atmosphäre: Änderungen in der mittleren Zirkulation und den Ausbreitungsbedingungen der planetaren Wellen. Terra Nostra 2003/6: 6. Deutsche Klimatagung, 155-160.

Jacobi, Ch., and D. Kürschner, 2003: Variabilität der mittleren Atmosphäre über Mitteleuropa im Zeitbereich von 2 - 20 Jahren. Terra Nostra 2003/6: 6. Deutsche Klimatagung, 214-221.

Kürschner, D., and Ch. Jacobi, 2003: Long-term behaviour of E-region nighttime LF reflection heights – long-term trend, solar cycle, and the QBO. Rep. Inst. Meteorol. Univ. Leipzig 30, 127-135.  (pdf-file)

Fröhlich, K., A. Pogoreltsev and Ch. Jacobi, 2003: Tides, Rossby and Kelvin waves simulated with the COMMA-LIM model. Rep. Inst. Meteorol. Univ. Leipzig 30, 149-155. (pdf-file)

Fröhlich, K., A. Pogoreltsev and Ch. Jacobi, 2003: The 48-layer COMMA-LIM model. Rep. Inst. Meteorol. Univ. Leipzig 30, 157-185. (pdf-file)

Merzlyakov, E., and Ch. Jacobi, 2003: Some numerical results on the quasi-two-day wave excitation and propagation in the unstable summer middle atmosphere. Rep. Inst. Meteorol. Univ. Leipzig 30, 186-200. (pdf-file)

Fröhlich, K., Ch. Jacobi, M. Lange and A. Pogoreltsev, 2002: The quasi two-day wave - the results of numerical simulation with the COMMA-LIM model. Rep. Inst. Meteorol. Univ. Leipzig 26, 122 - 134 (pdf-file).

Some results from the LIM group in the frame of  the MEDEC program (go to top of page)
 
 

July 2004	Modellng solar variability with COMMA-LIM (Poster at COSPAR 2004)
July 2004	COMMA-LIM model description (Poster at COSPAR 2004)
May  2004	SPA registrations show solar cycle (to appear  in Proceedings of DACH2004, in German)
March 2004	Poster at Bad Tölz Statusseminar
February 2004	MEDEC interim report 2003 Contribution to reports of LIM
September 2003	Poster Presentation at 6. DKT
July 2003	11 year cycle and planetary waves (presented a 6. DKT, in German)
April 2003	Posters at EGS/AGU meeting Nice, 2003: Stratospheric planetary wave analysis using UKMO data and COMMA-LIM  Waves and wave-mean flow interaction using COMMA-LIM QTDW forcing and instability
February 2003	New version of COMMA-LIM circulation model (1 MByte) Excitation of the 2-day-wave through instability (Contribution to the Rep. Inst. Meteorol. Leipzig) Modeling of tides and planetary waves using the new COMMA-LIM (Contribution to the Rep. Inst. Meteorol. Leipzig)
October 2002	Modelling of waves and tides, Poster at COSPAR 2002 Assembly Houston
September 2002	Preliminary results of simulation of the QTDW with different gravity wave amplitudes (Pdf-file, 650 kByte) Poster at Schliersee Statusseminar and Abstract
April 2002	Presentation of model results at EGS XXVII General Assembly, Nice, France Long-term behaviour of LF reflection heights presentedat EGS XXVII General Assembly, Nice, France
March 2002	Presentation at MEDEC Meeting, March 13.2002, Wuppertal
January 2002	Results of numerical modelling of QTDW propagation using the COMMA-LIM model (Pdf-file, 1 MByte) Contribution of LIM Group to MEDEC 2001 interim report (pdf-file)
July2001	Solar cycle dependence of  spring/summer mesopause prevailing winds

Links (go to top of page)

AFO2000 Page
MEDEC  Page in AFO2000
MPI Hamburg
Atmospheric Physics at Wuppertal University
IAP Kühlungsborn

Contact (go to top of page)
 

Co-ordinator	Guy Brasseur, MPI Hamburg	brasseur@dkrz.de
			Phone
Our group	Prof. Christoph Jacobi Dipl.-Met. Kristina Fröhlich   Dr. Alexander Pogoreltsev Russian State Hydrometeorological University, St. Petersburg Dr. Evgueni Merzlyakov IEM Obninsk	jacobi@uni-leipzig.de kfroehlich@uni-leipzig.de apogor@uni-leipzig.de   eugmer@uni-leipzig.de	+49-341-9732876   +49-341-9732875

 

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LIM

Jacobis homepage

Collm homepage

29 January 2002, last modification 7 July  2005