Summary: How warm was the world in November? How fast is it warming? See the numbers. They might surprise you.
The world has been warming for 2 centuries. Seldom mentioned is how much it has warmed, which allows alarmists to more easily arouse fear (e.g., see Joe Romm’s latest; difficult to read graphs but no numbers). For the answer we turn to the NASA-funded global temperature data from satellites. This post shows the numbers: the warming since 1979 is small (so far; the future might be quite different). The truth is out there for people willing to see it. Only with it can we prepare for our future.
Click to enlarge the graphs. This is the first of two posts today.
“It is extremely likely (95 – 100% certain) that human activities caused more than half of the observed increase in global mean surface temperature from 1951 to 2010.”
— conclusion of the IPCC’s AR5 Working Group I
- What do satellites tell us about global warming?
- Was this the hottest November?
- The long-term history of warming
- Who produces this satellite data & analysis?
- For More Information
(1) What do satellites tell us about global warming?
Satellites provide the most comprehensive and reliable record of the atmosphere’s warming since 1979.
The November 2014 Global Temperature Report
by the Earth System Science Center of the University of Alabama in Huntsville
(Blue is cold; red warm}. Click to enlarge.
See the equivalent graph from the surface temperature stations of the Climate Anomaly Monitoring System (CAMS) of the Climate Prediction Center (CPC) at the U.S. National Centers for Environmental Prediction (NCEP).
Key points from the UAH report (prepared under contract for NASA), which show a world that has warmed since 1979, but only slightly (few alarmists know this; even fewer admit it):
- The global composite temperature in November was +0.33°C (0.60°F) above the average for November during 1981-2010.
- Global climate trend of temperature starting in 16 November 1978: +0.14°C (0.3°F) per decade.
- Anomalies are computed per the World Meteorological Organization (WMO) recommended method, comparing the current temperatures vs. a 30 year base period ending with the latest decade.
That warming has not, however, been uniform around the globe.
- The fastest warming has been over the Arctic Ocean and the Arctic portions of the Atlantic and Pacific oceans. Those areas have warmed at the rate of 0.49°C per decade, or more than 1.76°C (about 3.17°F) in 36 years.
- The oceans surrounding the Antarctic are cooling at the rate of 0.02°C per decade, or 0.07°C since December 1978.
- The Northern Hemisphere is warming more than twice as fast as the Southern Hemisphere (0.19°C per decade vs. 0.09°C per decade).
- The contiguous 48 U.S. states have an average warming rate of 0.22°C (almost 0.40°F) per decade during the past 36 years. That means the average atmospheric temperature over the lower 48 has warmed by 0.79°C or about 1.43°F during that time.
(2) Was this the hottest November?
Before we look at the numbers, Colin Morice (climate monitoring scientist at the UK Met Office) warns us that…