气象科技进展2016，Vol.6Issue(3)：110-114,5.DOI:10.3969/j.issn.2095-1973.2016.03.015
关于太阳系外行星的宜居性
On the Habitability of Extra-Solar Planets
摘要
Abstract
Discoveries of more and more extra-solar planets (exoplanets) stimulate our great enthusiasm in searching for extrasolar life in deep space. Among many factors that life requires, permanent existence of liquid water is considered the most critical one. Thus, the first criterion in determining the habitability of an exoplanet is whether its surface temperature guarantees the existence of liquid water, which is a problem of climate. The present paper will brielfy introduce the progress of research of the habitability of exoplanets in the habitable zone of M dwarfs. Exoplanets in the habitable zone around M dwarfs are very likely tidally-locked planets due to strong gravitational forces, because they are so close to their M dwarfs. That is, such exoplanets are in the synchronous rotating state, with which one side of these exoplanets permanently faces their primaries and is warm, while the other side remains dark and cold. If the nightside temperature is sufifciently low, atmosphere compositions and water would be all frozen over the nightside, and such tidal-locking exoplanets are uninhabitable. Here, we will address the question, with our knowledge of Earth’s climate system, whether the atmosphere and ocean are able to transport sufifcient heat from the dayside to the nightside to prevent atmosphere from collapse and water from being frozen on the nightside, or not.关键词
太阳系外行星/宜居性/大气海洋热量输送/行星气候Key words
exoplanets/habitability/atmospheric and oceanic heat transport/planetary climate引用本文复制引用
胡永云..关于太阳系外行星的宜居性[J].气象科技进展,2016,6(3):110-114,5.基金项目
国家自然科学基金项目 （）
