They used
several simple indices, including the land - ocean contrast, the meridional gradient, and the magnitude of the seasonal cycle, to describe global climate variations and showed that for natural variations, they contain information independent of the global mean temperature.
The best type of security to invest in is an
INDEX FUND, which can be as few as one fund or
several as long as they are arranged in a
simple, easy to understand COUCH POTATO LIKE manner, which will minimize FEES and expenses (cost matters).