Climates and Hbitability of Planets with High Orbital Eccentricities

1. (1)气候状态是由年、最大和最小日照之间的复杂相互作用决定的。(2)由于年日晒量随偏心率的增加而增加，偏心率大的地区气候普遍偏暖。(3)大偏心率抑制了气候态的多样性。(4)近日点临时出走温室状态影响全年气候和宜居性。(5)岁差有时会改变行星气候状况。(6)年温度变化受倾角和岁差的强烈影响。(1)气候型态与EBM的结果一致。但它们比循证医学中发现的要酷一点。(2)对偏心距增大的响应随地表性质的不同而不同。(3)降水分布的年际变化可以理解为由偏心率引起的年日照变化所修正的直立/斜向变化。(1)在大热容条件下，可居住性受年日照量控制。(2)在热容小的情况下，中等倾角的行星只有在偏心距小的情况下才适宜居住，因为进动对气候有显著影响。

1. Results obtained by a one dimensional energy balance model (EBM) (1) Climate regimes are determined through a complex interaction among the annual, maximum and minimum insolations. (2) Owing to the increase of the annual insolation with eccentricity, generally warm climates are resulted at large eccentricity. (3) Multiplicity of the climate states is suppressed at large eccentricity. (4) Temporary run away greenhouse state at the perihelion affects the annual climate and habitability. (5) Precession sometimes changes planetary climate regimes. (6) Annual changes of temperature are a strongly affected by the obliquity and precession.2. Results obtained by a general circulation model (1) The climate regimes are consistent with those obtained by the EBM. But they are a little cooler than those found in EBM. (2) The response to the increase of eccentricity differs depending on the property of the ground surface. (3) Annual changes of precipitation distribution is understood as the upright/oblique regime change modified by the annual insolation change due to the eccentricity.3. Implication on the habitability (1) At large heat capacity, the habitability is controlled by the annual insolation. (2) At small heat capacity, planets with moderate obliquity are habitable only at small eccentricity, because precession affects climate significantly.