Atmospheric dynamics and habitability range in Earth-like aquaplanets obliquity simulations

被引:13
|
作者
Nowajewski, Priscilla [1 ,2 ]
Rojas, M. [2 ]
Rojo, R. [3 ]
Kimeswenger, S. [1 ,4 ]
机构
[1] Univ Catolica Norte, Inst Astron, Av Angamos 0610, Antofagasta, Chile
[2] Univ Chile, Dept Geofis, Blanco Encalada 2002, Santiago, Chile
[3] Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile
[4] Univ Innsbruck, Inst Astro & Teilchenphys, Technikerstr 25, A-6020 Innsbruck, Austria
关键词
Astrobiology; Atmospheres; Dynamics; Evolution; Geophysics; Meteorology; Terrestrial planets;
D O I
10.1016/j.icarus.2018.01.002
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the evolution of the atmospheric variables that affect planetary climate by increasing the obliquity by using a general circulation model (PlaSim) coupled to a slab ocean with mixed layer flux correction. We increase the obliquity between 30 degrees and 90 degrees in 16 aquaplanets with liquid sea surface and perform the simulation allowing the sea ice cover formation to be a consequence of its atmospheric dynamics. Insolation is maintained constant in each experiment, but changing the obliquity affects the radiation budget and the large scale circulation. Earth-like atmospheric dynamics is observed for planets with obliquity under 54 degrees. Above this value, the latitudinal temperature gradient is reversed giving place to a new regime of jet streams, affecting the shape of Hadley and Ferrel cells and changing the position of the InterTropical Convergence Zone. As humidity and high temperatures determine Earth's habitability, we introduce the wet bulb temperature as an atmospheric index of habitability for Earth-like aquaplanets with above freezing temperatures. The aquaplanets are habitable all year round at all latitudes for values under 54; above this value habitability decreases toward the poles due to high temperatures. (C) 2018 Elsevier Inc. All rights reserved.
引用
收藏
页码:84 / 90
页数:7
相关论文
共 50 条
  • [1] Atmospheric Dynamics of Earth-Like Tidally Locked Aquaplanets
    Merlis, Timothy M.
    Schneider, Tapio
    [J]. JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS, 2010, 2
  • [2] The role of dynamics on the habitability of an Earth-like planet
    Pilat-Lohinger, Elke
    [J]. INTERNATIONAL JOURNAL OF ASTROBIOLOGY, 2015, 14 (02) : 145 - 152
  • [3] Atmospheric dynamics of Earth-like tidally locked aquaplanets (vol 2, pg 13, 2010)
    Merlis, Timothy M.
    Schneider, Tapio
    [J]. JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS, 2012, 4
  • [4] Climate of Earth-like planets with high obliquity and eccentric orbits: Implications for habitability conditions
    Linsenmeier, Manuel
    Pascale, Salvatore
    Lucarini, Valerio
    [J]. PLANETARY AND SPACE SCIENCE, 2015, 105 : 43 - 59
  • [5] Habitability and Multistability in Earth-like Planets
    Lucarini, V.
    Pascale, S.
    Boschi, R.
    Kirk, E.
    Iro, N.
    [J]. ASTRONOMISCHE NACHRICHTEN, 2013, 334 (06) : 576 - 588
  • [6] The Effect of Varying Atmospheric Pressure upon Habitability and Biosignatures of Earth-like Planets
    Keles, Engin
    Grenfell, John Lee
    Godolt, Mareike
    Stracke, Barbara
    Rauer, Heike
    [J]. ASTROBIOLOGY, 2018, 18 (02) : 116 - 132
  • [7] Carbon Cycling and Habitability of Massive Earth-like Exoplanets
    Kruijver, Amanda
    Hoening, Dennis
    van Westrenen, Wim
    [J]. PLANETARY SCIENCE JOURNAL, 2021, 2 (05):
  • [8] Impact of vegetation albedo on the habitability of Earth-like exoplanets
    Bisesi, E.
    Murante, G.
    Provenzale, A.
    Biasiotti, L.
    von Hardenberg, J.
    Ivanovski, S.
    Maris, M.
    Monai, S.
    Silva, L.
    Simonetti, P.
    Vladilo, G.
    [J]. Monthly Notices of the Royal Astronomical Society, 2024, 534 (01) : 1 - 11
  • [9] Eccentric orbits may enhance the habitability of Earth-like exoplanets
    Liu, Binghan
    Marsh, Daniel R.
    Walsh, Catherine
    Cooke, Greg
    Sainsbury-Martinez, Felix
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2024, 532 (04) : 4511 - 4523
  • [10] Land Fraction Diversity on Earth-like Planets and Implications for Their Habitability
    Hoening, Dennis
    Spohn, Tilman
    [J]. ASTROBIOLOGY, 2023, 23 (04) : 372 - 394