by A. Watts, March 15, 2018 in WUWT
This paper deals with the central argument that skeptics bring up about claims of global warming: How do you separate the temperature signal from the base components like natural variation, human land-use influence, micro-site bias, measurement errors and biases, and other factors to get the “true” global warming signal?
The answer is that you can’t, at least not easily.
With the surface temperature record, it’s somewhat easier since you can observe some of those elements directly and separate them (such as we’ve done in our surfacestations project for land-use microsite biases), but in the ocean, everything is homogenized by the ocean itself. All you can look for is patterns, and try to disentangle based on pattern recognition. That’s what they are trying to do here.
Disentangling Global Warming, Multidecadal Variability, and El Niño in Pacific Temperatures
Robert C. Wills, Tapio Schneider, John M. Wallace, David S. Battisti, Dennis L. Hartmann
by James Temple, March 15, 2018 in A. Watts, WUWT
Fifteen years ago, Ken Caldeira, a senior scientist at the Carnegie Institution, calculated that the world would need to add about a nuclear power plant’s worth of clean-energy capacity every day between 2000 and 2050 to avoid catastrophic climate change. Recently, he did a quick calculation to see how we’re doing.
Not well. Instead of the roughly 1,100 megawatts of carbon-free energy per day likely needed to prevent temperatures from rising more than 2 ˚C, as the 2003 Science paper by Caldeira and his colleagues found, we are adding around 151 megawatts. That’s only enough to power roughly 125,000 homes.
At that rate, substantially transforming the energy system would take, not the next three decades, but nearly the next four centuries. In the meantime, temperatures would soar, melting ice caps, sinking cities, and unleashing devastating heat waves around the globe (see “The year climate change began to spin out of control”).
by P. Homewood, March 15, 2015 in NotaLotofPeopleKnowThat
According to the heavily adjusted NOAA data, last month was the fifth warmest February on record in the Central Lakes Division of NY State, with an average mean temperature of 31.4F.
Prior to 1981, the warmest was February 1954, which averaged 29.8F. In other words, NOAA claim that February 1954 was 1.6F colder than last month.
Which all looks very suspicious, because the opposite picture is shown at the high quality station of Ithaca Cornell University (…)