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D3 said..So you'll accept that increases and decreases of less than half a degree are due in part to natural variability.
I don't think anyone will doubt that. Are you then saying that the increase since then has been a "natural" rebound from that cooling? Please do enlighten me as to what you claim I'm ignoring about UHI effect on modelling?peacenlove said..D3 said..peacenlove said..D3 said..D3 said..
Emerging from a what?
Decadal cooling where?

About three. Between about 1940-1975. Black line "observations".
You should always quote the source of your citations.
www.ipcc.ch/report/ar6/wg1/So if you're willing to call those 3 troughs in observed temperatures between 1940 and 1965 "decadal cooling"?
What do you call the observed temperature increase since then?
Your'e doing your best to avoid the main problem with Urban Heat Island Effect aren't you?
Absolutely there's a cooling trend on your un-cited graph. That's why in the 1970's the was talk of a looming new "Ice Age".
Here NASA discussed the possible causes:
earthobservatory.nasa.gov/features/GISSTemperature/giss_temperature4.php "I think the cooling that Earth experienced through the middle of the twentieth century was due in part to natural variability"
You appear to be ignoring or avoiding the fact that the Urban Heat Island effect is real and that its inclusion in the climate modelling and surface temperature records puts significant upward bias on average temperatures.
When these biases are removed such as in Dr Soon's team's work, there is virtually no surface warming observable above natural variability. Quote from Dr Soon's paper abstract:
"A statistical analysis was applied to Northern Hemisphere land surface temperatures (1850-2018) to try to identify the main drivers of the observed warming since the mid-19th century. Two different temperature estimates were considered-a rural and urban blend (that matches almost exactly with most current estimates) and a rural-only estimate.
The rural and urban blend indicates a long-term warming of 0.89 ?C/century since 1850, while the rural-only indicates 0.55 ?C/century. This contradicts a common assumption that current thermometer-based global temperature indices are relatively unaffected by urban warming biases. Three main climatic drivers were considered, following the approaches adopted by the Intergovernmental Panel on Climate Change (IPCC)'s recent 6th Assessment Report (AR6): two natural forcings (solar and volcanic) and the composite "all anthropogenic forcings combined" time series recommended by IPCC AR6. The volcanic time series was that recommended by IPCC AR6. Two alternative solar forcing datasets were contrasted. One was the Total Solar Irradiance (TSI) time series that was recommended by IPCC AR6. The other TSI time series was apparently overlooked by IPCC AR6. It was found that altering the temperature estimate and/or the choice of solar forcing dataset resulted in very different conclusions as to the primary drivers of the observed warming. Our analysis focused on the Northern Hemispheric land component of global surface temperatures since this is the most data-rich component. It reveals that important challenges remain for the broader detection and attribution problem of global warming: (1) urbanization bias remains a substantial problem for the global land temperature data; (2) it is still unclear which (if any) of the many TSI time series in the literature are accurate estimates of past TSI; (3) the scientific community is not yet in a position to confidently establish whether the warming since 1850 is mostly human-caused, mostly natural, or some combination. Suggestions for how these scientific challenges might be resolved are offered."
. . .and we have agreed that about 0.5deg C is nothing more alarming than natural variability - right?