Multiple indicators show global temperatures headed down this month, and fast.
by Joe D’Aleo, CCM, AMS Fellow
As shown above (see the datapoint in the square box), the UAH AMSU daily temperatures are the coldest for the globe at 600mb of all the years tracked since 2002 (warmest 2010, previously coldest 2009).
The new Dr. Ryan Maue reanalysis based global temperature anomalies has declined dramatically this month – almost a full degree Celsius!
Forecasts for temperature 8 days in advance are appended to the reanalysis values.
Is this a reflection of the stratospheric warming pushing the cold to middle latitudes?
The cross section suggests that initial warm burst has ended. Often they repeat as the cold reloads and dumps again.
The 10mb warmth has only backed off slightly.
Notice at the north pole how temperatures warmed 50C (90F) at 10mb.
See how the warmth at the top has spread north then east then west.
Some lowering of the cold as warmth above presses down.
Meanwhile much of the lower 48 and western Europe is having a mild winter in contrast to recent years. It may end up among the coldest ever in Alaska. With a recent heat wave that I am sure Gerald Meehl at NOAA/NCAR is looking at where temperatures in Fairbanks rose to a balmy -3 (warmest this month), the average monthly temperature is an amazing 16.5F below normal. In Anchroage it has been about 13F below normal with double the normal snowfall.
The Alaska temperatures follow with the PDO. A cold PDO (with cold water offshore) means colder than normal, a warm PDO warmer than normal. Any surprise warming was observed as we moved from the La Nina rich cold PDO before 1977 to the El Ninos and +PDO in the 1980s and 1990s (attributed the CO2 of course). Any surprise with a negative 2 STD PDO and La Ninas, it is brutally cold again.
How will all of this play out in February and March???
BTW, instead of taking a PR cruise to Antarctica during their late summer to see melting ice maybe Hansen, Gore and Trenberth should go to Alaska in mid winter to see their fairy tale collapse as they freeze their tails.