The study is the largest of its kind and the first to use a combination
of satellite temperature data and long - term ground measurements.
For years, scientists have been debating
why satellite temperature data shows there have been about 18 years with no warming trend.
I have a preference for near global coverage and depth
integrated satellite temperature records — it doesn't miss energy in latent heat at the surface for one thing.
From my comments to this post on comparing IPCC forecasts to reality, I had a couple of thoughts
on satellite temperature measurement that I wanted to share:
An analysis of
satellite temperature dataset, through February 2014, identifies only two 5 - year periods having significant warming and five periods that exhibit either zero warming or cooling... the consensus experts» predicted reaction, by the climate, to a surge of human CO2 emissions is not supported by empirical evidence
According to the
global satellite temperature record maintained by John Christy and Roy Spencer at the University of Alabama at Huntsville, 2012 was the ninth warmest year globally since 1979.
Like today's 15 - year «hiatus,» (the «hiatus» grows to 21 years when looking
at satellite temperature data for the lower atmosphere) scientists have tried to explain the «grand hiatus» away by adjusting it out of the data to correct for «biases» in thermometers that may have caused the world to appear warmer than it was.
There are unfortunately many graphics going around that fail to do this properly, and some prominent ones are associated
with satellite temperatures made by John Christy.
As satellite temperature records show much larger fluctuations due to ENSO events, that has the effect in his graph of shifting the post 2000 temperatures below those of the 1990s.
There has to be an obvious and simple flaw in the using of lower
troposphere satellite temperatures at 3,000 m elevation to guesstimate actual surface polar temperatures.
It seems that attacks on the validity of the surface temperature record as an attempt to cast doubt on the recent warming trend would have been a bit more convincing back in the day when there were
competing satellite temperature records that suggested a cooling trend.
These divergences suggest that there is still a lot of uncertainty
surrounding satellite temperature records that needs to be resolved, as the range of reasonable assumptions for corrections can lead to large differences in results.
Yet RSS states that one of their goals is «to provide a complete and independent analysis as a check of these
[satellite temperature] important results.»
The meaning of the slope coefficient is that, on average, if surface temperature goes up 1 degree,
satellite temperatures go up by 0.76 degrees.
Phrases with «satellite temperature»