Could they be the reason for the nearly
flat global mean surface temperature for the last ten years.
«We've had
a flat global mean temperature since 1998,» he notes.
Given the decadal averages and the issue of what is meant by «the next» decade, Romm does have a point that the result of the paper could more clearly be described as representing «a period of
flat global mean temperatures extending somewhat into the coming decade, following by a very rapid rise in temperature leaving the planet on its long - term trend line by 2030.»
Not exact matches
But then, does that
mean that I have to accept
Global Warming and the Earth being
flat?
However, the
global economic recovery has languished for years,
meaning other factors are also biasing the curve
flatter.
Press coverage that described this as forecasting a decade of «
global cooling» was clearly off the mark, since the
global means (as you point out in one of your clarifications) are
flat and then rise.
This more - or-less corresponds to the
flat spot in the
global -
mean temperature series.
Another demonstration that the corrections are sufficient is that over the continental US, where many cities have a clear urban heating signal, the
mean of the corrected data is actually rather
flat (p88)-- i.e. none of the strong urban biases in the US has made it into the regional or indeed
global mean.
And yet, as James Hansen, the head of NASA's Goddard Institute for Space Studies, observes, «the five - year
mean global temperature has been
flat for a decade.»
Given that there is still much we do not know about climate change — including why
mean global temperature has been
flat for the past ten years — undermining confidence in climate science can (further) undermine its ability to inform policy.
The assumption of nearly
flat CO2 concentration before mid-20th century is unjustified as it has a strong correlation with the
global mean temperature since 1958 as shown:
The five - year
mean global temperature has been
flat for the last decade, which we interpret as a combination of natural variability and a slow down in the growth rate of net climate forcing.
Hansen» rationalization of why, (as he states) «the five - year
mean global temperature has been
flat for the last decade», is interesting background information, but, of course, does not change the observed fact that there is this standstill, which he acknowledges.
James E. Hansen tells us «the five - year
mean global temperature has been
flat for the last decade» (which isn't much different).
«
Global mean surface temperatures rose rapidly from the 1970s but have been relatively
flat over the most recent 15 years to 2013,» the Met says.
The observations of a
global mean temperature «
flat» with no linear trend since 1997 can not be discarded.
Those in the know like erudite James Hansen, the head of NASA's Goddard Institute for Space Studies, observe, «the five - year
mean global temperature has been
flat for a decade.»
4) With further 10 years of human emission of CO2, since 2000, there was little warming with average
global mean temperature anomaly
flat at about 0.4 deg C as shown in the following chart.
Dr. James Hansen — NASA GISS — 15 January 2013 «The 5 - year
mean global temperature has been
flat for a decade, which we interpret as a combination of natural variability and a slowdown in the growth rate of the net climate forcing.»
But what if The Pause continues into AR6 and beyond, i.e. a
flat or declining atmospheric
global mean temperature in the face of ever - rising GHG emissions?
And yet the problem with the uptick is not that it should be
flat, rather it is that their reconstruction does not provide a reasonable constraint on
global mean temperatures during the last few centuries.
quote: «
global mean temperatures have increased on the order of one degree Fahrenheit over the past century, having risen significantly from about 1919 to 1940, decreased between 1940 and the early»70s, increased again until the»90s, and remaining essentially
flat since 1998.»
Seventeen years without a temperature increase is also at odds with a report by the United Kingdom's Met Office that said «
global mean surface temperatures rose rapidly from the 1970s, but have been relatively
flat over the most recent 15 years to 2013.»
EPA's latest climate alarm - premised war on coal assault calls for states to cut CO2 emissions by 30 % from 2005 levels by 2030 despite satellite - recorded
flat mean global temperatures over the past 18 years and counting.