Wednesday, May 16, 2012

A Look At Global Temperatures & Dwindling Snow

While our April was rather benign in terms of temperatures, it wasn't the case of much of the rest of  the world as April 2012 finished as the fifth warmest April since climate records were first kept on a global basis in the 1880's.  It's sorta ironic -- and a bit funny in a sense as our March (the second warmest locally) was the coolest globally since 1999.   We're living in a slight case of a "You Can't Do That On Television" opposite sketch of sorts when it comes to temperatures the past couple of months.

I exaggerate a bit in saying that but our warmth in March was muted out quite a bit globally by aggressive cold in East Asia and Alaska.

In April, warmth was centered in the Midwest and Plains States in the US but it was also much, much warmer than average in Central Asia as a strong upper level ridge built in and controlled the weather.  The only significant cooling of note was across the Southern Hemisphere, specifically in Patagonia and in the southern quarter of Africa as their cold season got off to an early start.

The warmth in the Northern Hemisphere, not surprisingly, coincided with a shortfall in snowfall compared to average as well.  Snowcover in April 2012 was the fourth lowest since records were first kept in 1967 and has been part of an overall trend in recent years where snow cover has melted in North America and the Northern Hemisphere in quicker succession compared to average.