Science. 1979 Apr 6;204(4388):60-2. doi: 10.1126/science.204.4388.60.
When the interplanetary magnetic field is directed away from the sun, the area of wintertime low-pressure (300-millibar) troughs near 180 degrees W longitude is significantly larger than when the field is toward the sun. This relation persists during most of the winters of 1951 to 1973.
当行星际磁场指向背离太阳时，西经 180 度附近冬季的低气压（300 毫巴）槽面积明显大于磁场指向太阳时的情况。这种关系在 1951 年至 1973 年的大部分冬季都持续存在。
