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Dr. Raymond J. Leibensperger III

Ph.D. in Earth Sciences Scripps Institution of Oceanography

Climate Sciences Concentration

Now at: Heidelberg University

Postdoctoral Researcher

Fiedler Research Group

Raymond's
Scientific 
Identity

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About Me

My name is Dr. Raymond J. Leibensperger III (he/him) and I investigate natural aerosol emissions, namely sea spray aerosols (SSA). I received my B.Sc. in Marine Science & Applied Physics from the University of Miami in 2020, my M.Sc. in Oceanography from Scripps Institution of Oceanography in 2021, and my Ph.D. in Earth Sciences from Scripps Institution of Oceanography in 2025. My research focuses on the production of sea spray aerosols in laboratory-scale breaking wave proxies using an experimental and observation approach. My specialties include MATLAB, TSI Inc. instruments, and campaign leadership, but I have additional skills in LabView, Aerosol Devices instruments, and Droplet Measurement Technology instruments. 

I am continuing my career at Heidelberg University (Germany), working at the Institute of Environmental Physics, in the AerosoL In Climate ChangE (ALIC2E) research group under the supervision of Prof. Dr. Stephanie Fiedler. Shifting away from aerosol measurements in the laboratory, I will be transitioning into sea spray aerosol modeling, seeking an efficient and applicable model of SSA emissions to be integrated in models across scales.

I am continuously looking for new opportunities, where I would like to better bridge the fields of experiments and observations to improve model parameterizations of natural aerosol emissions. My long-term career goal is to be a principle investigator for a research group investigating natural aerosol treatment in models, and improving parameterizations through field and laboratory experimentation.

Latest Publication

Sea surface warming suppressed primary sea spray aerosol number production

Raymond J. Leibensperger III, Justin D. Hamlin, Jena K. Herbst, Charbel Harb, Ke'La A. Kimble, Meinrat O. Andreae, Christopher Lee, Greg Sandstrom, M. Dale Stokes, Grant B. Deane, Kimberly A. Prather

Atmospheric Chemistry and Physics

  • First study to investigate the effect of sea surface temperature on sea spray aerosol production through lenses of bubble concentrations, aerosol concentrations, and aerosol fluxes

  • Aerosol number (concentration and fluxes) generally decrease with increasing SST, however, there are size dependent differences, particularly for the supermicron, mass-carrying SSA

  • We generate correction factors for SSA number and mass for immediate integration into Earth System Models

Recent Updates

August 2026

Raymond's second first-author publication is published in ACP! Link to publication

July 2026

Raymond's first dataset is available freely through Zenodo! Link to data

May 2026

Raymond's first first-author publication is published in JGRA! Link to publication

Dec. 2025

Raymond attends AGU25 to present part of his Ph.D. work, his postdoc project, and hosts the first queer science-focused session in AGU history.

Aug. 2025

Raymond moved to Heidelberg, Germany to join Prof. Dr. Stephanie Fiedler's ALIC2E research group.

Jun. 2025

Raymond successfully defended his Ph.D. from Scripps Institution of Oceanography, titled "Making A Splash: Characterizing Sea Spray Aerosol Emissions Using the Scripps Ocean-Atmosphere Research Simulator (SOARS)"

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Nov 2020: Raymond posing with 2 PurpleAir sensors installed on the SIO Pier.

Dr. Raymond J. Leibensperger III

Ph.D. Earth Sciences

Now at: Heidelberg University

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