Dr. Ryan Sullivan

Professor

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Biography

Ryan Sullivan is a Professor in the Department of Chemistry at Carnegie Mellon University, with a courtesy appointment in the Department of Civil and Environmental Engineering. His research is centered on atmospheric analytical chemistry, focusing on single-particle analysis and heterogeneous kinetics, particularly in cloud nucleation phenomena. Prof. Sullivan's current interests involve the development of improved aircraft-deployable analytical instrumentation to characterize individual particles in the atmosphere in real-time. His work investigates the physicochemical properties of atmospheric particles which are emitted or formed from various sources, exploring the chemical processes that affect their transport and ability to nucleate cloud droplets and ice crystals. These studies are crucial for understanding the influence of atmospheric particles on Earth's climate. His endeavors in research balance instrument development, laboratory experiments, and field measurements to enhance the scientific community's knowledge of atmospheric science.

Research Interests

Requirements for Carnegie Mellon University

Doctorate Program
Requirements
GPA Requirement
Required:3.5
GRE General
Verbal
Required:158
Quantitative
Required:149
Analytical Writing
Required:4
Overall
Required:4
Prerequisites
Bachelor's degree in Psychology or related field Research experience/publications
Application Checklist
  • Online application
  • Statement of Purpose
  • Three letters of recommendation
  • Transcripts
  • GRE scores (optional but reported in profile)
  • English Proficiency (TOEFL/IELTS/Duolingo)
Specialization Notes

Admission is extremely competitive with no strict GPA cut-offs; holistic review is used.