论文标题
平均全球海平面压力的Triskels和对称性
Triskels and Symmetries of Mean Global Sea-Level Pressure
论文作者
论文摘要
自1850年以来，平均海平面大气压力的演变通过奇异谱分析分析。主组件（趋势）的地图显示了订单3和4的惊人对称性。北半球（NH）显示了一组三个正特征，形成了几乎完美的等边三角形。南半球（SH）展示了一组三个积极特征，该特征排列为同步三角形，可能具有第四个（较弱）的特征。该几何形状可以建模为模式3（NH）或4（SH）的Taylor-Couette流。尽管缺乏北部大陆的圆柱形对称性，但仍出现了NH Triskel的显着规律性和秩序的三个对称性。 SH中更强的强度和更大的特征大小与环形AAO的存在有关。除主要趋势外，还标识了130、90、50、22、15、15、4、1.8、1.5、0.5、0.33和0.25岁的准周期成分，即Jose，Gleissberg，Hale和Schwabe Cycles，年度周期和前三个谐波。
The evolution of mean sea-level atmospheric pressure since 1850 is analyzed using singular spectrum analysis. Maps of the main components (the trends) reveal striking symmetries of order 3 and 4. The northern hemisphere (NH) displays a set of three positive features, forming an almost perfect equilateral triangle. The southern hemisphere (SH) displays a set of three positive features arranged as an isosceles triangle, with a possible fourth (weaker) feature. This geometry can be modeled as Taylor-Couette flow of mode 3 (NH) or 4 (SH). The remarkable regularity and order three symmetry of the NH triskel occurs despite the lack of cylindrical symmetry of the northern continents. The stronger intensity and larger size of features in the SH is linked to the presence of the annular AAO. In addition to the dominant trends, quasi-periodic components of 130, 90, 50, 22, 15, 4, 1.8, 1, 0.5, 0.33, and 0.25 years, i.e. the Jose, Gleissberg, Hale and Schwabe cycles, the annual cycle and its first three harmonics are identified.
