北半球

Healthwise, the Northern Hemisphere and the Southern Hemisphere outside of sub-Saharan Africa are more alike than different.

以健康问题而言，北球球（非洲撒哈拉沙漠以除外）的相似点多于相异点。

Recently northern global climate was controlled by high (low) base state, low (high) decadal and interannual variability of SOI(NAOI).

近期北球处于SOI基本态高年际及年代际变率，NAOI高基本态年际及年代际变率的慢变。