Because of that El Nino bulge, the calculated trend will remain slight positive for quite a while (highlighting the problem of using
linear trend lines on «event» driven data)
Not exact matches
I've included the
linear trend line to illustrate the effect the straight
line has
on the appearance of the data.
That is to say that there will be one EU - wide cap
on the number of emission allowances and this cap will decrease annually along a
linear trend line, which will continue beyond the end of the third trading period (2013 - 2020).
Projections are aligned in the graph so that they start (in 1990 and 2000, respectively)
on the
linear trend line of the (adjusted) observational data.
AK, that's the interesting thing... Girma isn't ``... imposing a
linear trend on the data...», rather he is OBSERVING that the
trend of temperature peaks and valleys IS A
LINE.
On the lower graph, the dotted
line shows the
linear trend in temperature change from 5150 BCE to 1850 CE.
The
linear trends on the charts denote the continuing acceleration of 15 - year warming (red straight
line) for the pre-1950 era, versus the decelerating
trend of our current times (green straight
line), as reported by NASA scientists.
You need to look at tools for identifying a periodic (or quasiperiodic) signal
on top of a base
trend that is NOT
linear; because there's a heck of a lot more going
on with climate that you can capture
on such scales with one
line a sine wave.
In your third figure you display a straight
line fit to curvy data; why not add the model fit
on which you base your calculation, that is, the
linear trend plus the 60 yr.
First, the fit of the dark - blue deseasonalized NOAA data to the underlying
linear - regression
trend line (light blue) is very much closer than it is even to the IPCC's least projection
on scenario A2.
Speaking as if to Tamino, I said «the steepest trendline you use...», which means I was talking about the
linear trend line shown
on his specific graph, not one from wood for trees or giss or anywhere else, the one shown
on his graph that he used to make his point.