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The May 2011 to April 2012 heat wave bumped the last record-setting warm year out of the way, which was November 1999 to October 2000

The National Oceanic and Atmospheric Administration (NOAA) has found that the last 12 months have been a record-breaking time period for warm weather in the U.S.

According to the NOAA's National Climatic Data Center, the 12-month time period from May 2011 to April 2012 has been the warmest consecutive string of months since 1895, which is when weather records began.

Over the past year, the U.S. has had its second hottest summer, warmest March and fourth warmest winter on record. It was also discovered that April 2012 was the third warmest ever, with 332 locations in the U.S. experiencing their warmest April temperatures on record.

About 22 states in the U.S. experienced their warmest year over the last 12 months. Many of the states were in the Northeast and Upper Midwest United States.

Also, cities like Washington D.C., Atlanta, Boston, Buffalo, New York City, Detroit, Chicago, New Orleans, Philadelphia, Tampa and Nashville have encountered their warmest start to the calendar year 2012. Twenty-six states east of the Rocky Mountains have recorded the beginning of 2012 as their warmest start of the year yet, with the lower 48 states experiencing temperatures about 5.4 degrees Fahrenheit above average so far.

A few examples of record-breaking states include North Dakota, which has had temperatures 10.4 degrees above normal so far this year; Minnesota, with 9.6 degrees above normal; South Dakota, with 9 degrees over average; Wisconsin, with 8.6 degrees above normal, and Iowa, with 8.6 degrees over average.

According to the NOAA, the cause of the warm weather is a jet stream pattern that has locked the cold air in the high latitudes and created "heat domes" over the center of the lower 48 states. These domes have wandered east and west periodically.

The May 2011 to April 2012 heat wave bumped the last record-setting warm year out of the way, which was November 1999 to October 2000. The average temperature was 2.8 degrees F above average at that time.

Source: Slashdot

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RE: What a difference a year makes
By JediJeb on 5/11/2012 2:49:37 PM , Rating: 2
But all of that is not needed. Al Gore, et al, all say we are 0.4 degrees hotter than we should be.

There is what is probably the sticking point of the whole mess. Do we base the temperature we should be off of the past 50 years, 100 years, 200 years, 1000 years, or 1,000,000 years? What is the measurement/estimation uncertainty when figuring what temperatures were 1000 years ago when we had no measuring devices there taking accurate readings? How well calibrated were thermometers even 100 or 200 years ago compared to today? If the degree of uncertainty 200 years ago was +/- 1 degree, then how can we say for certain that today we are +0.4 degrees from what should be normal when our estimate of what should be normal may have an uncertainty of more than +/- 1 degree? It is also interesting how the accepted scientific standard of measure for temperature is Centigrade or Kelvin, yet many AGW publications use Fahrenheit. Maybe it is because 1 degree change C is approximately 2 degrees change F? Which looks more extreme?

RE: What a difference a year makes
By TSS on 5/11/12, Rating: 0
By TheEinstein on 5/12/2012 7:42:08 AM , Rating: 2
Excellent point.

Also other considerations... what is the seasonal high and the seasonal low.

Never take a day's known high or low... to many normal variations can make one particular day be dull and another exciting.

Now is our weather actually breaking records up and low in a large way on seasonals or no?

The weather is dynamic, fluid, and quasi-random. The Jet Stream, the Sun, the Oceans, Cosmic Winds, Stellar Dust, Magnetics, Air Pressure (local, regional, world wide), and so many other factors exist that it seems a daunting task...


Why does the Farmers Almanac predict so damned well?

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