Ahmed

Dr. Ahmed Abdelmonem

  • Scientific Principal Investigator (PI): experimental physics, Physical chemistry, laser spectroscopy
  • Nonlinear Optical Spectroscopy - Atmospheric Surface-Science
  • group: Cloud Microphysics
  • room: 207
  • phone: 24520
  • fax: 24332
  • ahmed abdelmonem ∂does-not-exist.kit edu
 

Current Research (Atmospheric Surface-Science)

  • Molecular level investigations of atmospheric photochemistry (e.g. the emission of VOCs from the sea surface microlayer (SML) under the effect of sunlight) using Nonlinear Optical Spectroscopy and Mass Spectroscopy

  • Studying water- and ice-aerosol interactions on the molecular level using nonlinear optical spectroscopy to understand the criteria of formation of different types of clouds, which in turn has its influence on climate change.

Recent Research

  • Investigating the microphysical and optical properties of ice crystals to help understanding the radiation balance in atmosphere. Studies on Pre-defined clouds are being carried at the AIDA cloud simulation chamber and in situ studies are done with research aircrafts and at high altitude environmental research stations. more
  • Development and application of a novel airborne instrument (PHIPS-HALO) for in situ cloud research. more.

Research Grants

  • Start-Up-Budget (STUB 2012) in 2012 from the competence field Earth and Environment, KIT.

  • DFG project (DFG, AB 604/1-1) in 2014 from the German Research Foundation (DFG).

  • DFG project (DFG, AB 604/1-2) in 2017 from the German Research Foundation (DFG)

  • DFG project (DFG, AB 604/2-1) in 2017 from the German Research Foundation (DFG)

  • DFG project (DFG, AB 604/3-1) in 2020 from the German Research Foundation (DFG)

 

Responsibilities

 

Lab

Side responsibilities

  • Member of IMKAAF website editors
  • Laser safety officer at the IMKAAF-KIT

 

Relevant publications

  • Abdelmonem, A., Morelová, N., Finck, N., Schild, D., and Lützenkirchen, J.: Unexpected behavior of sodium sulfate observed in experimental freezing and corrosion studies, Journal of Raman Spectroscopy, 52, 1499-1506, doi: https://doi.org/10.1002/jrs.6200, 2021.

  • Abdelmonem, A., Morelová, N., Finck, N., Schild, D., and Lützenkirchen, J.: Unexpected behavior of sodium sulfate observed in experimental freezing and corrosion studies, Journal of Raman Spectroscopy, 52, 1499-1506, doi: https://doi.org/10.1002/jrs.6200, 2021.
  • Abdelmonem, A., Ratnayake, S., Toner, J. D., and Lützenkirchen, J.: Cloud history can change water–ice–surface interactions of oxide mineral aerosols: a case study on silica, Atmos. Chem. Phys., 20, 1075-1087, doi: 10.5194/acp-20-1075-2020, 2020.
  • Abdelmonem, A.; Backus, E. H. G.; Bonn, M. Ice Nucleation at the Water-Sapphire Interface: Transient Sum Frequency Response without Evidence for Transient Ice Phase. The Journal of Physical Chemistry C 2018, DOI: 10.1021/acs.jpcc.8b07480.
  • Abdelmonem, A.; Wang, Y.; Lützenkirchen, J.; Alves, M. E., Calcium uptake on kaolinite, gibbsite: effects of sulfate, pH, and salt concentration with additional insight from second harmonic generation on temperature dependencies with sapphire basal planes and the potential relevance to ice nucleation. 2018, InTech (submitted, accepted, 2018).
  • Lützenkirchen, J., Scharnweber, T.; Ho, T., Striolo, A., Sulpizi, M., and Abdelmonem, A.* A set-up for simultaneous measurement of second harmonic generation and streaming potential and some test applications. Journal of Colloid and Interface Science 2018, 529, 294-305. DOI: https://doi.org/10.1016/j.jcis.2018.06.017.
  • Abdelmonem, A., Backus, E. H. G., Hoffmann, N., Sánchez, M. A., Cyran, J. D., Kiselev, A., and Bonn, M.: Surface-charge-induced orientation of interfacial water suppresses heterogeneous ice nucleation on α-alumina (0001), Atmos. Chem. Phys., 17, 7827-7837, doi: 10.5194/acp-17-7827-2017, 2017.
  • Abdelmonem, A.: Direct molecular-level characterization of different heterogeneous freezing modes on mica – Part 1, Atmos. Chem. Phys., 17, 10733-10741, doi: 10.5194/acp-17-10733-2017, 2017.
  • Abdelmonem, A., Järvinen, E., Duft, D., Hirst, E., Vogt, S., Leisner, T., and Schnaiter, M.: PHIPS-HALO: The airborne Particle Habit Imaging and Polar Scattering probe. Part I: Design and Operation, Atmos. Meas. Tech., 9, 3131-3144, doi: 10.5194/amt-9-3131-2016, 2016.
  • Ehrlich, A., Schäfer, M., Wendisch, M., Herber, A., Lüpkes, C., Neuber, R., Afchine, A., Bundke, U., Krämer, M., Luebke, A., Petzold, A., Abdelmonem, A., Hoose, C., Schnaiter, M., Vochezer, P., Weixler, K., Bozem, H., Hoor, P., Klingebiel, M., Weigel, R., Fugal, J., Borrmann, S., Schneider, J., Schulz, C., Mioche , G., Jourdan, O., Weinzierl, B., Mertes, S., Stratmann, F., de Lozar, A., Mech, M., and Crewell, S.: VERDI, RACEPAC and ACLOUD: Investigating Arctic clouds by airborne observations, EGU General Assembly, Vienna, 2016.
  • Voigt, C., Schumann, U., Minikin, A., Abdelmonem, A., Afchine, A., Borrmann, S., Boettcher, M., Buchholz, B., Bugliaro, L., Costa, A., Curtius, J., Dollner, M., Dörnbrack, A., Dreiling, V., Ebert, V., Ehrlich, A., Fix, A., Forster, L., Frank, F., Fütterer, D., Giez, A., Graf, K., Grooß, J.-U., Groß, S., Heimerl, K., Heinold, B., Hüneke, T., Järvinen, E., Jurkat, T., Kaufmann, S., Kenntner, M., Klingebiel, M., Klimach, T., Kohl, R., Krämer, M., Krisna, T. C., Luebke, A., Mayer, B., Mertes, S., Molleker, S., Petzold, A., Pfeilsticker, K., Port, M., Rapp, M., Reutter, P., Rolf, C., Rose, D., Sauer, D., Schäfler, A., Schlage, R., Schnaiter, M., Schneider, J., Spelten, N., Spichtinger, P., Stock, P., Walser, A., Weigel, R., Weinzierl, B., Wendisch, M., Werner, F., Wernli, H., Wirth, M., Zahn, A., Ziereis, H., and Zöger, M.: ML-CIRRUS - The airborne experiment on natural cirrus and contrail cirrus with the high-altitude long-range research aircraft HALO, Bulletin of the American Meteorological Society, doi: 10.1175/BAMS-D-15-00213.1, 2016.
  • Wendisch, M., Pöschl, U., Andreae, M. O., Machado, L. A. T., Albrecht, R., Schlager, H., Rosenfeld, D., Martin, S. T., Abdelmonem, A., Afchine, A., Araùjo, A., Artaxo, P., Aufmhoff, H., Barbosa, H. M. J., Borrmann, S., Braga, R., Buchholz, B., Cecchini, M. A., Costa, A., Curtius, J., Dollner, M., Dorf, M., Dreiling, V., Ebert, V., Ehrlich, A., Ewald, F., Fisch, G., Fix, A., Frank, F., Fütterer, D., Heckl, C., Heidelberg, F., Hüneke, T., Jäkel, E., Järvinen, E., Jurkat, T., Kanter, S., Kästner, U., Kenntner, M., Kesselmeier, J., Klimach, T., Knecht, M., Kohl, R., Kölling, T., Krämer, M., Krüger, M., Krisna, T. C., Lavric, J. V., Longo, K., Mahnke, C., Manzi, A. O., Mayer, B., Mertes, S., Minikin, A., Molleker, S., Münch, S., Nillius, B., Pfeilsticker, K., Pöhlker, C., Roiger, A., Rose, D., Rosenow, D., Sauer, D., Schnaiter, M., Schneider, J., Schulz, C., de Souza, R. A. F., Spanu, A., Stock, P., Vila, D., Voigt, C., Walser, A., Walter, D., Weigel, R., Weinzierl, B., Werner, F., Yamasoe, M. A., Ziereis, H., Zinner, T., and Zöger, M.: The ACRIDICON-CHUVA campaign: Studying tropical deep convective clouds and precipitation over Amazonia using the new German research aircraft HALO, Bulletin of the American Meteorological Society, doi: 10.1175/bams-d-14-00255.1, 2016.
  • Schnaiter, M., Järvinen, E., Vochezer, P., Abdelmonem, A., Wagner, R., Jourdan, O., Mioche, G., Shcherbakov, V. N., Schmitt, C. G., Tricoli, U., Ulanowski, Z., and Heymsfield, A. J.: Cloud chamber experiments on the origin of ice crystal complexity in cirrus clouds, Atmospheric Chemistry and Physics, 16, 5091-5110, doi: 10.5194/acp-16-5091-2016, 2016.
  • Abdelmonem, A., Lützenkirchen, J., and Leisner, T.: Probing ice-nucleation processes on the molecular level using second harmonic generation spectroscopy, Atmos. Meas. Tech., 8, 3519-3526, doi: 10.5194/amt-8-3519-2015, 2015.
  • Zawadowicz, M. A., Abdelmonem, A., Mohr, C., Saathoff, H., Froyd, K. D., Murphy, D. M., Leisner, T., and Cziczo, D. J.: Single-Particle Time-of-Flight Mass Spectrometry Utilizing a Femtosecond Desorption and Ionization Laser, Analytical Chemistry, doi: 10.1021/acs.analchem.5b03158, 2015.
  • Preocanin, T., Abdelmonem, A., Montavon, G., and Luetzenkirchen, J.: Charging Behavior of Clays and Clay Minerals in Aqueous Electrolyte Solutions — Experimental Methods for Measuring the Charge and Interpreting the Results, in: Clays, Clay Minerals and Ceramic Materials Based on Clay Minerals, edited by: Nascimento, G. M. D., InTech, 51-88, 2016.
  • Lützenkirchen, J., Abdelmonem, A., Weerasooriya, R., Heberling, F., Metz, V., and Marsac, R.: Adsorption of dissolved aluminum on sapphire-c and kaolinite: implications for points of zero charge of clay minerals, Geochem. Trans., 15, 1-14, doi: 10.1186/1467-4866-15-9, 2014.
  • Abdelmonem, A., Schnaiter, M., Amsler, P., Hesse, E., Meyer, J., and Leisner, T.: First correlated measurements of the shape and light scattering properties of cloud particles using the new Particle Habit Imaging and Polar Scattering (PHIPS) probe, Atmos. Meas. Tech., 4, 2125-2142, doi: 10.5194/amt-4-2125-2011, 2011.
  • Lützenkirchen, J., Zimmermann, R., Preočanin, T., Filby, A., Kupcik, T., Küttner, D., Abdelmonem, A., Schild, D., Rabung, T., Plaschke, M., Brandenstein, F., Werner, C., and Geckeis, H.: An attempt to explain bimodal behaviour of the sapphire c-plane electrolyte interface, Adv. Colloid Interface Sci., 157, 61-74, doi: 10.1016/j.cis.2010.03.003, 2010.
  • Polly, R., Schimmelpfennig, B., Flörsheimer, M., Kruse, K., Abdelmonem, A., Klenze, R., Rauhut, G., and Fanghänel, T.: Theoretical investigation of the water/corundum (0001) interface, The Journal of Chemical Physics, 130, 064702, doi: 10.1063/1.3052074, 2009.