90 citations · 350 across the 7 of their papers we have counts for
7 papers
Relative abundances of CO2, CO, and CH4 in atmospheres of Earth-like lifeless planets
Yasuto Watanabe, Kazumi Ozaki
Carbon is an essential element for life on Earth, and the relative abundances of major carbon species (CO2, CO, and CH4) in the atmosphere exert fundamental controls on planetary c…
The future lifespan of Earth's oxygenated Atmosphere
K. Ozaki, C. Reinhard
Earth's modern atmosphere is highly oxygenated and is a remotely detectable signal of its surface biosphere. However, the lifespan of oxygen-based biosignatures in Earth's atmosphe…
A sluggish mid-Proterozoic biosphere and its effect on Earth's redox balance
Kazumi Ozaki, Christopher T. Reinhard, Eiichi Tajika
The possibility of low but nontrivial atmospheric oxygen (O2) levels during the mid-Proterozoic (between 1.8 and 0.8 billion years ago, Ga) has important ramifications for understa…
Anoxygenic photosynthesis and the delayed oxygenation of Earth's atmosphere
Kazumi Ozaki, Katharine J. Thompson, Rachel L. Simister +2
The emergence of oxygenic photosynthesis created a new niche with dramatic potential to transform energy flow through Earth's biosphere. However, more primitive forms of photosynth…
Effects of primitive photosynthesis on Earth's early climate system
Kazumi Ozaki, Eiichi Tajika, Peng K. Hong +2
The evolution of different forms of photosynthetic life has profoundly altered the activity level of the biosphere, radically reshaping the composition of Earth's oceans and atmosp…
Rethinking CO Antibiosignatures in the Search for Life Beyond the Solar System
Edward W. Schwieterman, Christopher T. Reinhard, Stephanie L. Olson +4
Some atmospheric gases have been proposed as counter indicators to the presence of life on an exoplanet if remotely detectable at sufficient abundance (i.e., antibiosignatures), in…
The remote detectability of Earth's biosphere through time and the importance of UV capability for characterizing habitable exoplanets
Christopher T. Reinhard, Edward W. Schwieterman, Stephanie L. Olson +10
Thousands of planets beyond our solar system have been discovered to date, dozens of which are rocky in composition and are orbiting within the circumstellar habitable zone of thei…