日本地球惑星科学連合2018年大会

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[JJ] ポスター発表

セッション記号 P (宇宙惑星科学) » P-PS 惑星科学

[P-PS08] 惑星科学

2018年5月20日(日) 13:45 〜 15:15 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:岡本 尚也(国立研究開発法人宇宙航空開発機構 宇宙科学研究所)、黒崎 健二(名古屋大学大学院 理学研究科 素粒子宇宙物理学専攻)

[PPS08-P15] What happens if you run out of ocean?

*石丸 夏奈1タスカー エリザベス2フォリエル ジュリアン3 (1.東京大学、2.宇宙航空研究開発機構、3.地球生命研究所)

キーワード:ハビタビリティー、系外惑星、地球、アウトリーチ、気候

The discovery of Earth-sized worlds has led to extensive speculation about whether any could be habitable. However, not only is very little known about these planets, but small deviations away from Earth-like conditions can potentially lead to major differences in surface environment.

Here we explore how changes to the fraction of the planet surface covered by water can affect the atmospheric carbon dioxide levels (a greenhouse gas) due to changes in a simple carbon cycle. We show that even altering this one property of an otherwise Earth-like planet can make major changes to the heat retention capabilities of the atmosphere.

We present our results as an interactive webpage where users can try different fractions of land and sea and see how the levels of carbon dioxide change. Our main goal is for users to explore for themselves how even small changes can greatly influence planetary environment and therefore, care must be taken in claiming a new world is truly “like Earth”.