NAI
2016 Annual Science Report
University of California, Riverside
Reporting | JAN 2016 – DEC 2016
Executive Summary
Ongoing Research Effort:
Comprehensive numerical modeling of mid-Proterozoic relationships among low atmospheric oxygen, methane instability, and low and heterogeneous shallow marine oxygen » In addition to the modeling work discussed above, we have revisited evolving atmospheric chemistry on Earth in the context of the spectroscopic detectability of Earth’s biosphere (Reinhard et al., In review). We suggest that vast periods of Earth’s history would have appeared sterile, despite a thriving surface biosphere—representing a series of ‘false negative’ scenarios for remote life detection that warrant further exploration. More broadly, we argue that future work should seek to identify novel biosignatures that are less prone to being overprinted by exchange with a liquid ocean.
Work between GT, UCR, and collaborator Kasting from the Virtual Planetary Laboratory (VPL) is coupling experimental kinetics of biotic/abiotic N2O production with atmospheric photochemical models to explore N2O as a potential ... Continue reading.
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Timothy Lyons
NAI, ASTEP, ASTID, Exobiology -
TEAM Active Dates:
1/2015 - 12/2019 CAN 7 -
Team Website:
http://astrobiology.ucr.edu/ -
Members:
70 (See All) - Visit Team Page
Project Reports
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Stability and Remote Detectability of Biosignature Gases: 1D Photochemical and Radiative Transfer Models
ROADMAP OBJECTIVES: 4.1 7.2 -
Gas Fluxes and Ecological Impacts: 3D Earth System Models
ROADMAP OBJECTIVES: 4.1 4.2 7.2 -
Composition of the Oceans and Atmosphere: Proxy Development
ROADMAP OBJECTIVES: 4.1 4.2
Publications
- There are no publications for this team in the 2016 annual report.
2016 Teams
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Georgia Institute of Technology
Massachusetts Institute of Technology
NASA Ames Research Center
NASA Goddard Space Flight Center
NASA Jet Propulsion Laboratory - Icy Worlds
SETI Institute
University of California, Riverside
University of Colorado, Boulder
University of Illinois at Urbana-Champaign
University of Montana, Missoula
University of Southern California
University of Wisconsin
VPL at University of Washington