Fletcher L N, Irwin P G J, Orton G S, Teanby N A, Achterberg R K, Bjoraker G L, Read P L, Simon-Miller A A, Howett C, de Kok R, Bowles N, Calcutt S B, Hesman B, Flasar F M
Atmospheric, Oceanic, and Planetary Physics, Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK.
Science. 2008 Jan 4;319(5859):79-81. doi: 10.1126/science.1149514.
Saturn's poles exhibit an unexpected symmetry in hot, cyclonic polar vortices, despite huge seasonal differences in solar flux. The cores of both vortices are depleted in phosphine gas, probably resulting from subsidence of air into the troposphere. The warm cores are present throughout the upper troposphere and stratosphere at both poles. The thermal structure associated with the marked hexagonal polar jet at 77 degrees N has been observed for the first time. Both the warm cyclonic belt at 79 degrees N and the cold anticyclonic zone at 75 degrees N exhibit the hexagonal structure.
土星的两极在炎热的气旋极地涡旋中呈现出意想不到的对称性，尽管太阳通量存在巨大的季节性差异。两个涡旋的核心区域磷化氢气体含量都很低，这可能是由于空气下沉到对流层所致。在两极的整个对流层上部和平流层都存在温暖的核心区域。首次观测到了与北纬77度明显的六边形极地急流相关的热结构。北纬79度的暖性气旋带和北纬75度的冷性反气旋区都呈现出六边形结构。
