Scientific program 04

Planetary atmospheres

Characterizing atmospheric chemistry, transport, aerosol formation, isotopic fractionation, climate relevance, and habitability across planets, moons, and exoplanets.

Scientific rationale

The laboratory develops and integrates chemical models for planetary atmospheres, with research spanning sulfur chemistry on Venus, organic and particulate formation on Titan, photochemistry in exoplanet atmospheres, and processes on icy outer-solar-system bodies.

The chemical scope includes gas-phase reactions and heterogeneous chemistry in ice, allowing atmospheric and surface processes to be considered within a common mechanistic framework.

Questions guiding the program

  1. How do photochemical networks determine atmospheric composition and observable spectra?
  2. What controls haze and complex organic synthesis in reducing atmospheres?
  3. How do transport and chemistry interact in vertically structured planetary atmospheres?
  4. Which chemical environments are relevant to climate, atmospheric evolution, and habitability?

Starting points in the literature

Browse publications by theme →
SelectedThe Astrophysical Journal Letters · 2003

Source of atomic hydrogen in the atmosphere of HD 209458b

PI-led exoplanet photochemistry study.

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SelectedThe Astrophysical Journal Letters · 2007

Photolytically generated aerosols in the mesosphere and thermosphere of Titan

PI-led Titan aerosol study.

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SelectedThe Astrophysical Journal Letters · 2007

Source of nitrogen isotope anomaly in HCN in the atmosphere of Titan

PI-led isotope-photochemistry study.

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SelectedJGR: Planets · 2009

Modeling the distribution of H2O and HDO in the upper atmosphere of Venus

PI-led Venus isotope study.

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Data and methods will be linked as they are prepared for public release.