A5041876688- Astro and Planetary Science
- Geology and Paleoclimatology Research
- Stellar, planetary, and galactic studies
- Paleontology and Stratigraphy of Fossils
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Geological and Geochemical Analysis
- Marine and environmental studies
- Aquatic and Environmental Studies
- Science and Climate Studies
- Fluid Dynamics Simulations and Interactions
- Astrophysics and Star Formation Studies
- Climate variability and models
- Planetary Science and Exploration
Planetary Science Institute
2022-2023
Harvard University
2022-2023
University of Chicago
2019-2020
Harvard University Press
2020
The Miocene Climatic Optimum (MCO) from ~17 to 14 million years ago (Ma) represents an enigmatic reversal in Cenozoic cooling. A synthesis of marine paleotemperature records shows that the MCO was a local maximum global sea surface temperature superimposed on period at least 19 Ma 10 Ma, during which temperatures were order 10°C warmer than present. Our high-resolution reconstruction ocean crustal production, proxy for tectonic degassing carbon, suggests production rates ~35% higher modern...
Abstract Stratocumulus clouds cover about a fifth of Earth’s surface, and due to their albedo low-latitude location, they have strong effect on radiation budget. Previous studies using large-eddy simulations shown that multiple equilibria (both stratocumulus-covered cloud-free/scattered cumulus states) exist as function fixed SST, with relevance equatorward advected air masses. Multiple also been found atmospheric CO 2 , subtropical SST nearly 10 K higher in the cloud-free state suggested...
Abstract The potential habitability of tidally locked planets orbiting M-dwarf stars has been widely investigated in recent work, typically with a nondynamic ocean and without continents. On Earth, dynamics are primary means heat nutrient distribution. Continents critical source nutrients, strongly influence dynamics, participate climate regulation. In this we investigate how the size substellar land mass affects oceans ability to transport upwell nutrients on planet Proxima Centauri b using...
Abstract Planets orbiting within the habitable zones of M stars are prime targets for future observations, which motivates a greater understanding how tidal locking can affect planetary habitability. In this Letter we will consider effect on limit cycling between snowball and warm climate states, has been suggested could occur rapidly rotating planets in outer regions zone with low CO 2 outgassing rates. Here, use 3D Global Climate Model that calculates silicate-weathering to show tidally...
The study of tidally-locked planets has become an active field research in recent years due to their interesting properties and abundance the universe. As one hemisphere these is always facing a star other covered perpetual darkness, habitable conditions on such extreme worlds were generally considered impossible. However, studies have shown that under specific planetary atmospheric oceanic conditions, temperatures could stay mild enough for planet be habitable. In this paper, we created...
Abstract The equilibrium rotation rate of a planet is determined by the sum torques acting on its solid body. For planets with atmospheres, dominant are usually gravitational tide, which acts to slow planet’s rate, and atmospheric thermal spin up planet. Previous work demonstrated that rocky thick atmospheres may produce strong enough tides avoid tidal locking, but study how strength tide depends properties has not been done. In this work, we use combination simulations from global climate...
Stratocumulus clouds cover about a fifth of Earths surface, and due to their albedo low-latitude location, they have strong effect on radiation budget. Previous studies using Large Eddy Simulations shown that multiple equilibria (both cloud-covered cloud-free states) exist as function fixed-SST, with relevance equatorward advected air masses. Multiple also been found atmospheric CO2, subtropical SST nearly 10 K higher in the state, suggested warm-climate dynamics. In this study, we use...