The global average rise in sea level and the rises of the Northern and Southern Hemisphere average sea levels in the present epoch

The mechanisms for the increase in the global average sea level in the present epoch are studied. The phenomenon of contrasting secular Southern and Northern Hemisphere average sea-level changes is explained; this phenomenon was predicted earlier by the author on the basis of the observed secular northward trend of the Earth’s center of mass at a rate of 5–6 mm/yr. Studies of sea-level changes using altimetry method are criticized.