The weather at any spot is usually defined by max/min temperatures, humidity, precipitation and wind strength/direction. Weather varies hourly, daily, season-to-season and place-to-place. These weather measurements at any place can be averaged over various time periods. Climate is defined as the average of thirty years of weather. Mark Twain explained the difference: “Climate is what you expect, weather is what you get”. Weather statistics can be averaged over larger areas, such by region, state, continent or the globe. This is a mathematical abstraction, becoming less accurate and less meaningful as the time or area covered increases. A global average annual temperature which (after debatable adjustments) includes winter in the Antarctic and summer in the Sahara is irrelevant. No one lives in the global average temperature. Weather and climate have been so politicized that most commentaries are now merely propaganda. In the Brave New World of global warming...(Read Full Post)