Publications - Hauke Schmidt

Refereed publications:

• Schmidt, H., K. Alterskjær, D. Bou Karam, O. Boucher, A. Jones, J. E. Kristjansson, U. Niemeier, M. Schulz, A. Aaheim, F. Benduhn, M. Lawrence, and C. Timmreck: Can a reduction of solar irradiance counteract CO₂-induced climate change? – Results from four Earth system models, Earth Syst. Dynam. Discuss., 3, 31-72, 2012.
  
• Schmidt, H., J. Kieser, S. Misios, and A. N. Gruzdev: The atmospheric response to solar variability: Simulations with a general circulation and chemistry model for the entire atmosphere, in: F.-J. Luebken (ed.): Climate And Weather of the Sun-Earth System (CAWSES): Highlights from a priority program, Springer, Dordrecht, the Netherlands, in press, 2012.
• Beig, G., S. Fadnavis, H. Schmidt, and G. P. Brasseur:  Inter-comparison of 11-year solar cycle response in mesospheric ozone and temperature obtained by HALOE satellite data and HAMMONIA model,  J. Geophys. Res., 117, D00P10, doi:10.1029/2011JD015697, 2012.
• Gabriel, A., H. Schmidt, and D.H.W. Peters: Effects of the 11-year solar cycle on middle atmospheric stationary wave patterns in temperature, ozone and water vapor, J. Geophys. Res., 116, D23301, doi:10.1029/2011JD0158252011, 2011.
• Kravitz, B., A. Robock, O. Boucher, H. Schmidt, K. E. Taylor, G. Stenchikov, M. Schulz: The Geoengineering model Intercomparison Project (GEOMIP), Atmos. Sc. Let., 12 (2),162-167, DOI: 10.1002/asl.316, 2011.
• Niemeier, U., H. Schmidt, C. Timmreck: The dependency of geoengineered sulfate aerosol on the emission strategy, Atmos. Sc. Let., 12 (2), 189-194, DOI: 10.1002/asl.304, 2011.
• Wissing, J. M., M.-B. Kallenrode, J. Kieser, H. Schmidt, M. T. Rietveld, A. Strømme, and P. J. Erickson: Atmospheric Ionization Module Osnabrück (AIMOS): 3. Comparison of electron density simulations by AIMOS-HAMMONIA and incoherent scatter radar measurements, J. Geophys. Res., 116, A08305, doi:10.1029/2010JA016300, 2011. 
• Pena-Ortiz, C., H. Schmidt, M. A. Giorgetta, M. Keller: The QBO modulation of the semiannual oscillation in MAECHAM5 and HAMMONIA, J. Geophys. Res., 115, D21106, doi:10.1029/2010JD013898, 2010.
• Schmidt, H., G. P. Brasseur, M. A. Giorgetta: The solar cycle  signal in a general circulation and chemistry model with internally generated QBO, J. Geophys. Res., 115, D00I14, doi:10.1029/2009JD012542, 2010.
• Dikty, S., H. Schmidt, M. Weber, C. von Savigny, and M. G. Mlynczak: Daytime ozone and temperature variations in the mesosphere: a comparison between SABER observations and HAMMONIA model, Atmos. Chem. Phys., 10, 8331–8339, 2010.
• C.-Y. She, D. A. Krueger, R. Akmaev, H. Schmidt, E. Talaat, and S. Yee: Long-term variability in mesopause region temperatures over Fort Collins, Colorado (41°N, 105°W) based on lidar observations from 1990 through 2007, J. Atm. Sol.-Terr. Phys., 71, 1558-1564, 2009.
  
• Lossow, S., J. Urban, H. Schmidt, D. R. Marsh, J. Gumbel, P. Eriksson, and D. Murtagh: Wintertime water vapour in the polar upper mesosphere and lower thermosphere - First satellite observations by Odin/SMR, J. Geophys. Res.,  doi:10.1029/2008JD011462, D10304, 2009.
• Gruzdev, A., H. Schmidt, G. P. Brasseur: The effect of the solar rotational irradiance variation on the middle and upper atmosphere calculated by a threedimensional chemistry-climate model, Atmos. Chem. Phys., 9, 595-614, 2009.
• Offermann, D., O. Gusev, M.Donner, J.M.Forbes, M.Hagan, M.G.Mlynczak, J.Oberheide, P.Preusse, H.Schmidt, and J.M.Russell III: Relative Intensities of Middle Atmosphere Waves, J. Geophys. Res., 114, D06110, doi:10.1029/2008JD010662., 2009.
• Yuan, T., H. Schmidt, C. Y. She, D. A. Krueger, S. Reising, Seasonal variations of semidiurnal tidal perturbations in mesopause region temperature, zonal and meridional winds above Fort Collins, CO (40.6°N, 105°W), J. Geophys. Res., 113, D20103, doi:10.1029/2007JD009687, 2008.
• Achatz, U., N. Grieger, and H. Schmidt: Mechanisms Controlling the Diurnal Solar Tide: Analysis Using a GCM and a Linear Model, J. Geophys. Res., 113, A08303, doi:10.1029/2007JA012967, 2008.
  
• Yuan, T., C.-Y. She, D. A. Krueger, F. Sassi, R. Garcia, R. G. Roble, H.-L. Liu, and H. Schmidt: Climatology of mesopause region temperature, zonal wind and meridional wind over Fort Collins, CO (41ºN, 105ºW) and comparison with model simulations, J. Geophys. Res., 113, D03105, doi:10.1029/2007JD008697, 2008.
• Offermann, D., M. Jarisch, H. Schmidt, J. Oberheide, K.U. Grossmann, O. Gusev, J.M. Russell III, and M.G. Mlynczak: The "wave turbopause", J. Atm. Sol.-Terr. Phys., 69, 2139-2158, doi:10.1016/j.jastp.2007.05.012, 2007.
• Elbern, H., A. Strunk, H. Schmidt, and O. Talagrand: Emission rate and chemical state estimation by 4-dimensional variational inversion. Atm. Chem. Phys., 7, 3749-3769, 2007.
• Schmidt, H., G. P. Brasseur, M. Charron, E. Manzini, M. A. Giorgetta, T. Diehl, V. I. Fomichev, D. Kinnison, D. Marsh, and S. Walters:  The HAMMONIA chemistry climate model: Sensitivity of the mesopause region to the 11-year solar cycle and CO2 doubling. J. Climate,  19, 3903-3931, 2006.
• Schmidt, H. and G. P. Brasseur: The response of the middle atmosphere to solar forcing in the Hamburg Model of the Neutral and Ionized Atmosphere. Space Sc. Rev., 125, 345-356, doi:10.1007/s11214-006-9068-z, 2006.
• Schmidt, H. and D. Martin: Adjoint sensitivity of episodic ozone in the Paris area to emissions on the continental scale. JGR, 108, D17, 10.1029/2001JD001583, 2003. 
• Derognat, C., M. Beekmann, M. Baeumle, D. Martin, H. Schmidt: Effect of biogenic VOC emissions on tropospheric chemistry during the ESQUIF campaign in the Ile-de-France region. JGR, 108, D17, 10.1029/2001JD001421, 2003. 
• Duclaux, O., E. Frejafon, H. Schmidt, A. Thomasson, D. Mondelain, J. Yu, C. Guillaumond, C. Puel, F. Savoie, P. Ritter, J. P. Boch, J. P. Wolf: 3D-air quality model evaluation using the Lidar technique. Atmospheric Environment, 36, 5081-5095, 2002. 
• Schmidt, H.: Sensitivity studies with the adjoint of a chemistry transport model for the boundary layer. in: B. Sportisse (ed.), Air pollution modelling and simulation. 400-410, Springer, 2002. 
• Elbern, H. and H. Schmidt: Chemical 4D variational data assimilation and its numerical implications for case study analyses. in: D. P. Chock and G. R. Carmichael (eds.): IMA volumes in Mathematics and its Applications, 103, ``Atmospheric Modeling''. 165-184, Springer, 2001. 
• Schmidt, H., R. Vautard, C. Derognat, and M. Beekmann: A comparison of simulated and observed ozone mixing ratios for the summer of 1998 in western Europe. Atmospheric Environment, 35, 6277-6297, 2001. 
• Elbern, H., and H. Schmidt: Ozone episode analysis by four-dimensional variational chemistry data assimilation. JGR, 106, 3569-3590, 2001. 
• Elbern, H., H. Schmidt, O. Talagrand, and A. Ebel: 4D-variational data assimilation with an adjoint air quality model for emission analysis. Environ. Mod. Software, 15, 539-548, 2001. 
• Elbern, H., H. Schmidt, and A. Ebel: Implementation of a parallel 4d-variational chemistry data-assimilation scheme. Environmental Management and Health, 10, 236-244, 1999 
• Elbern, H. and H. Schmidt: A four-dimensional variational chemistry data assimilation scheme for eulerian chemistry transport modeling. JGR, 104, 18583-18598, 1999. 
• Elbern, H., H. Schmidt, and A. Ebel: Variational data assimilation for tropospheric chemistry modeling. JGR, 102, D13, 15,967-15,985, 1997. 
• Elbern, H., H. Schmidt, and A. Ebel: Adjoint of a gas phase mechanism and assimilation of air quality data for photo-oxidant modeling. Proceedings of the XVIII Quadrennial Ozone Symposium, 703-706, L'Aquila, 1996. 

Other publications:

• Brasseur, G. P., D. Marsh, and H. Schmidt: Solar variability, climate, and atmospheric photochemistry, in: Heliophysics: Evolving solar activity and the climates of space and Earth, eds: C. L. Schrijver and G. L. Siscoe, p. 425 -448, Cambridge University Press, 2010. 
• Schmidt, H., G. P. Brasseur and the MEDEC team: Mesospheric dynamics, energetics and chemistry, Final report of the AFO2000-BMBF project, 2005.
• Schmidt, H. and G. P. Brasseur: Simulation of the mesospheric ozone response to natural and anthropogenic climate variability, Proceedings of the Quadrennial Ozone symposium, Kos, Greece, 2004. 
• Schmidt, H., G. P. Brasseur and the MEDEC team: Mesospheric dynamics, energetics and chemistry, AFO2000 newsletter, 3(7), 3-6, 2004. 
• Brasseur, G. P. and H. Schmidt: Ozonabnahme in der Stratosphaere. promet, 30, 106-115, 2004. 
• Schmidt, H., R. Vautard, M. Beekmann, C. Derognat, and N. Blond: Étude de la formation d'ozone à l'échelle continentale. Rapport final du contrat entre ELF-Aquitaine et l'Institut Pierre-Simon-Laplace, Paris, 2002. 
• Elbern, H., H. Schmidt, and A. Ebel: Improving chemical state analysis and ozone forecasts by four-dimensional chemistry data assimilation. In: Proceedings of the third WMO International Symposium on Assimilation of Observations in Meteorology and Oceanography, WMO, Geneva, WMO/TD No. 986, 293-296, 2000. 
• Schmidt, H., H. Elbern, and A. Ebel: Optimisation des concentrations initiales par assimilation 4D-VAR pour la modélisation physico-chimique de la troposphère. Proceedings of Ateliers de modélisation de l'atmosphère, Météo-France, Toulouse, 1999. 
• Elbern, H., H. Schmidt, and A. Ebel: Four-dimensional data assimilation for tropospheric ozone analysis. In: SODA Workshop on Chemical Data Assimilation. Proceedings. KNMI-Publikatie 188, 1999. 
• Schmidt, H.: Vierdimensionale Datenassimilation nach der Variationsmethode für ein mesoskaliges Chemietransportmodell. PhD-thesis, in: M. Kerschgens, F. M. Neubauer, M. Pätzold, P. Speth, and B. Tezkan (eds.): Mitteilungen aus dem Institut für Geophysik und Meteorologie der Universität zu Köln, 132, Köln, 1999. 
• Elbern, H. and H. Schmidt: Four dimensional data assimilation for a eulerian chemistry transport model. In: P. M. Borell and P. Borell (eds.): Proceedings of EUROTRAC Symposium 1998. WITpress, Southampton, 8-12, 1998. 
• Elbern, H., S. Tilmes, and H. Schmidt: Data assimilation for chemistry-transport models. In: P. M. Borell, P. Borell, T. Cvitas und W. Seiler (eds.): Proceedings of the EUROTRAC Symposium 1996, Computational Mechanics Publications, Southampton, 681-685, 1996. 

   

   
   
   

Recent workshop and conference contributions:

• Schmidt, H. and G. P. Brasseur: Middle atmospheric forcing from below at different time-scales: Simulations with HAMMONIA. Inv. Pres., IAGA/ICMA assembly, Toulouse, 2005.
• Schmidt, H., G. P. Brasseur, and A. Gruzdev: The atmospheric response to long and short-term solar variability simulated in a chemistry climate model for the entire atmosphere. Inv. Pres., IAGA/ICMA assembly, Toulouse, 2005.
• Schmidt, H., G. P. Brasseur, and M. A. Giorgetta: The response of the middle and upper atmosphere to solar variability: Simulations with a chemistry climate model for the entire atmosphere. Inv. pres., SEC workshop, Frascati, 2005.
• Schmidt, H. and G. P. Brasseur: The response of the atmosphere to solar forcing: A 3-D model study. Inv. pres., ISSI workshop, Bern, 2005.
• Schmidt, H., G. P. Brasseur, and M. Giorgetta: The sensitivity of the middle and upper atmosphere to solar and anthropogenic climate forcing: Simulations with HAMMONIA, Oral pres., DPG Tagung, Berlin, 2005.
• Schmidt H., G. P. Brasseur, M.Charron, M. Giorgetta, and E. Manzini: The Effect of Natural and Anthropogenic Climate Forcing on the Mesopause Region: Simulations with the 3D Chemistry-Climate Model HAMMONIA, Invited pres. at the IAGA/ICMA Trend workshop, Sozopol, 2004. 
• Schmidt H., G. P. Brasseur, M.Charron, M. Giorgetta, and E. Manzini: The response of the mesopause region to natural and anthropogenic limate forcing simulated in a chemistry-climate model, Oral pres. at the AGU/CGU Joint Assembly, Montreal, 2004. 
• Schmidt H., G. P. Brasseur, and E. Manzini: Simulation of the Solar Cycle Effect on Chemistry and Dynamics in the Mesosphere and Lower Thermosphere, Oral pres. at the EGU I Gen. Ass., Nice, 2004. 
• Schmidt, H., E. Manzini, M. Charron, M. Giorgetta, and G. P. Brasseur: HAMMONIA: A new General Circulation and Chemistry Model for the Entire Atmosphere. Oral pres. at the ``International Conference on Earth System Modelling'', Hamburg, 2003. 
• Schmidt, H., E. Manzini, G. P. Brasseur, M. Charron, and M. Giorgetta: The distribution of CO2 and its influence on the energy budget in the mesosphere/lower thermosphere: Simulations with HAMMONIA. Oral pres. at the IUGG 2003 conference, Sapporo, 2003. 
• Schmidt, H. and G. P. Brasseur: HAMMONIA: A New Whole Atmosphere Model to Investigate the Climate Effect of Solar Variability. Oral pres. at the ISCS 2003 workshop, Tatranska Lomnica, 2003. 
• Schmidt, H.: First simulations with the general circulation and chemistry model HAMMONIA. Oral pres. at the ``Informal Week on Chemistry-Dynamics Coupling near the Mesopause'', Hamburg, 2003. 
• Schmidt, H., G. P. Brasseur, M. Charron, M. Giorgetta, and E. Manzini: HAMMONIA: A new general circulation and chemistry model for the entire atmosphere. Oral pres. at the EGS XXVI Gen. Ass., Nice, 2003. 
• Schmidt, H., M. Charron, E. Manzini, M. Giorgetta, G. Brasseur, V. Fomichev, M. Kaufmann, and A. Kutepov: The CO2 concentration in the mesosphere/lower thermospher: Sensitivity studies with the HAMMONIA model. Poster pres. at the PSMOS 2002 workshop, Foz do Iguacu, 2002. 
• Schmidt, H. et al.: MEDEC - Chemical Budgets in the Mesosphere: The sensitivity of the mesospheric energy budget to the CO2 mixing ratio. Poster pres. at the AFO2000 status seminar, Schliersee, 2002. 
• Schmidt, H. et al.: MEDEC - Mesospheric Dynamics, Energetics and Chemistry: A Project Overview. Poster pres. at the AFO2000 status seminar, Schliersee, 2002.