studium:masterseminar2020

Master seminar 2020: "Representation of cloud microphysics in numerical models: Description, Limitations and Challenges"

Contact: Tobias Zinner.

Donnerstag, 22.10.

9:30
Jens Kühne (Fabian Hoffmann)

  • Mordy, W. (1959): Computations of the growth by condensation of a population of cloud droplets. Tellus, 11(1), 16-44. https://doi.org/10.3402/tellusa.v11i1.9283. PDF
  • Grabowski and Morrison (2017), Modeling Condensation in Deep Convection, J. Atmos. Sci., 74 (7): 2247–2267.

10:20
Bulk microphysics: Sina Hofer (Florian Baur)

  • Hally, A., E. Richard, S. Fresnay, and D. Lambert, 2014: Ensemble simulations with perturbed physical parametrizations: Pre-HyMeX case studies. Q.J.R. Meteorol. Soc., 140, 1900–1916, https://doi.org/10.1002/qj.2257. (PDF)
  • Hally, A., E. Richard, and V. Ducrocq, 2014: An ensemble study of HyMeX IOP6 and IOP7a: sensitivity to physical and initial and boundary condition uncertainties. Natural Hazards and Earth System Sciences, 14, 1071–1084, https://doi.org/10/f5739s.

11:10
Bulk microphysics: Tobias Königl (Florian Baur)

  • Igel, A. L., M. R. Igel, and S. C. van den Heever, 2014: Make It Double? Sobering Results from Simulations Using Single-Moment Microphysics Schemes. J. Atmos. Sci., 72, 910–925, https://doi.org/10.1175/JAS-D-14-0107.1. (PDF)
  • Lee, S. S., and L. J. Donner, 2011: Effects of Cloud Parameterization on Radiation and Precipitation: A Comparison Between Single-Moment Microphysics and Double-Moment Microphysics. Terr. Atmos. Ocean. Sci., 22, 403, https://doi.org/10.3319/TAO.2011.03.03.01(A).

13:30
Two-moment microphysics: Matthias Henkies (Tobias Zinner)

  • Thompson and Eidhammer, 2014: A Study of Aerosol Impacts on Clouds and Precipitation Development in a Large Winter Cyclone, https://doi.org/10.1175/JAS-D-13-0305.1, PDF
  • White, B., Gryspeerdt, E., Stier, P., Morrison, H., Thompson, G., and Kipling, Z.: Uncertainty from the choice of microphysics scheme in convection-permitting models significantly exceeds aerosol effects, Atmos. Chem. Phys., 17, 12145–12175, https://doi.org/10.5194/acp-17-12145-2017, 2017.

14:20
Spectral-bin microphysics: Leonhard Hufnagl (Tobias Zinner)

  • Khain et al., 2010: Aerosol Effects on Intensity of Landfalling Hurricanes as Seen from Simulations with the WRF Model with Spectral Bin Microphysics, https://doi.org/10.1175/2009JAS3210.1, PDF
  • Souri et al., 2020: Response of Hurricane Harvey’s rainfall to anthropogenic aerosols: A sensitivity study based on spectral bin microphysics with simulated aerosols, Atmospheric Research, Volume 242, https://doi.org/10.1016/j.atmosres.2020.104965.

15:10
Spectral-bin microphysics: Max Mujkanovic(Christian Keil)

  • Igel, A. L. and S. C. van den Heever (2017): The Importance of the Shape of Cloud Droplet Size Distributions in Shallow Cumulus Clouds. Part II: Bin Microphysics Simulations. J. Atmos. Sci., 74, 249–258. https://doi.org/10.1175/JAS-D-15-0382.1., PDF
  • Igel, A. L. and S. C. van den Heever (2017) The Importance of the Shape of Cloud Droplet Size Distributions in Shallow Cumulus Clouds. Part I: Bin Microphysics Simulations, J. Atmos. Sci., DOI: 10.1175/JAS-D-15-0382.1.
Freitag, 23.10.

9:30
Spectral-bin microphysics: Zheng Li (Gregor Möller)

10:20
Specific microphysical processes: Felix Jäger (Veronika Pörtge):

11:10
Specific microphysical processes: Tobias Kostenbader (Julien Savre)

  • Heymsfield, A. J., and C. D. Westbrook, 2010: Advances in the Estimation of Ice Particle Fall Speeds Using Laboratory and Field Measurements. J. Atmos. Sci., 67, 2469–2482, https://doi.org/10.1175/2010JAS3379.1. (PDF)
  • Falk, N., A. Igel and M. Igel, 2019, The Relative Impact of Ice Fall Speeds and Microphysics Parameterization Complexity on Supercell Evolution, MWR

13:30
Specific microphysical processes: Marcus Müller (Julien Savre)

  • Adams-Selin, R. D., and C. L. Ziegler, 2016: Forecasting Hail Using a One-Dimensional Hail Growth Model within WRF. Mon. Wea. Rev., 144, 4919–4939, https://doi.org/10.1175/MWR-D-16-0027.1. (PDF)
  • Brimelow, J.C. and E.R. Poolman, 2002, Modeling Maximum Hail Size in Alberta Thunderstorms, JAS.



Organization:
  • Zoom-Session
  • each talk is based on 2 publications
  • 30 min presentation, 10-15 minutes discussion
  • Language: English or Deutsch

We expect all students who want to take part to:

  1. Select one paper and register with the given mentor and Tobias Zinner until September 11!.
  2. Look for a second paper connected to your selection (e.g. search forward in time to identify something recent, e.g., using Web of Knowledge/ Web of Science or Google Scholar. Check:
  3. Talke/write to your advisor to identify the material for a presentation soon. I.e. find secondary literature to be used.
  4. Talk to your advisor at least one more time before the seminar. At this meeting you should go through the final presentation with the advisor in time for last changes. Consequently, this should take place just before the seminar in October.

The talk should include some introductory general material on the topic, the main new outcomes presented in the given publication and details on one aspect or method of analysis and/or contradicting/controversial opinions.


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