Union (U)
Session Sub-category Union
Session ID U-12
Title Biogeochemistry of CO world
Short Title Biogeochemistry of CO world
Main Convener Name Yuichiro Ueno
Affiliation Department of Earth and Planetary Sciences, Tokyo Institute of Technology
Co-Convener 1 Name Norio Kitadai
Affiliation Japan Agency for Marine-Earth Science and Technology
Co-Convener 2 Name Shino Suzuki
Affiliation RIKEN
Co-Convener 3 Name Kazumi Ozaki
Affiliation Tokyo Institute of Technology
Session Language 
J
Scope 
In this session, we will discuss the impact of carbon chemical species (CO2/CO/CH4) on the planetary evolution, prebiotic chemistry, and biological metabolism with the ultimate goal of elucidating the planetary setting suitable for the emergence of life. Following astronomical observations and planetary explorations identifying a growing number of extraterrestrial bodies that are potentially capable of sustaining life, search for lives in Universe has already begun. However, the fundamental question - what planetary conditions are crucial for the emergence of life - remains unsolved. In particular, although carbon monoxide (CO) must have been an abundant atmospheric component on the early Earth and Mars, its role in prebiotic and early metabolic processes are not well understood. Here, we seek for diverse research subjects on these topics. We also welcome discussions on future exploration of extraterrestrial lives based on the CO world concept.
Presentation Format Oral and Poster presentation
Invited Authors Yoshihiro Furukawa (Graduate School of Science, Tohoku University)
ZENING YANG (Institute of Science Tokyo)
Time Presentation No Title Presenter
Oral Presentation May 29 AM1
9:00 - 9:30 U12-01 Chemical evolution to functional biopolymers on early Earth and early Mars Yoshihiro Furukawa
9:30 - 9:45 U12-02 Influence of atmospheric carbon species on the climates of terrestrial planets: the implications for CO worlds Hiroyuki Kurokawa
9:45 - 10:00 U12-03 Effect of orbital distance and volcanic gas compositions on atmospheric CO partial pressures of Earth-like lifeless planets Yoshiaki Endo
10:00 - 10:15 U12-04 Evolution of the atmospheric composition of the Martian CO2-driven dry climate system Yasuto Watanabe
10:15 - 10:30 U12-05 The Martian Carbon Cycle Probed by New Isotope Analysis Hiromu Nakagawa
Oral Presentation May 29 AM2
10:45 - 11:00 U12-06 Prebiotic cyanide generation from amino acids ZENING YANG
11:00 - 11:15 U12-07 Photochemical synthesis of building blocks from a plausible CO atmosphere containing N2O Xiaofeng Zang
11:15 - 11:30 U12-08 Roles of CO in the formation of haze in early Earth, early Mars and Titan atmospheres Kensei Kobayashi
11:30 - 11:45 U12-09 Supercritical CO2 Environment in the Subseafloor Drives Prebiotic Synthesis of Nucleic Acid Building Blocks Shotaro Tagawa
11:45 - 12:00 U12-10 Analyzing the Stability of Autocatalytic Chemical Reaction Networks Based on their Amplification Rate Hideshi Ooka
12:00 - 12:15 U12-11 Unraveling the evolution of early carbon fixation through dynamic tunnel structural changes in CO-catalyzing enzymes Kimiho Omae
Presentation No Title Presenter
Poster Presentation May 29 PM3
U12-P01 Revisiting the greenhouse effects of non-greenhouse gases: Dependency on the relative humidity model Tetsuo Taki
U12-P02 An introduction of one-dimensional photochemical model for Archean atmosphere TRIEU THI NGOC TRAN
U12-P03 Abiotic synthesis of nucleosides by the solar high energy particle irradiation in the surface and atmosphere of celestial bodies Koharu Fukazawa
U12-P04 Effect of sulfur-containing amino acid on peptide formation by solar energy particle irradiation in early terrestrial and martin atmospheres Nanaka Kogi
U12-P05 Environmental Factors for Synthesizing Selective Amino Acid
from CO and NH3 		Yuta Asakura
U12-P06 Reproduction of sustainable organic synthesis with the flow-reactor simulating ancient deep-sea alkaline hydrothermal vent Akira Tanemura
U12-P07 Elucidating key parameter of electrochemical N2 reduction on metal sulfide to ammonia Akira Yamaguchi
U12-P08 H2-driven pyrite/pyrrhotite redox cycle: a sustained electron generator for the autotrophic origin of life Norio Kitadai
U12-P09 Theoretical understanding of electroreduction of carbon dioxide on partially reduced nickel sulfides Okada Satoshi
U12-P10 Site-specific chemical reactions on transition metal sulfide surfaces: MoS2 and FeS2 studied by XPS Jun Yoshinobu
U12-P11 Electrosynthesis by sulfur-oxidizing bacteria from deep-sea hydrothermal fields Masahiro Yamamoto