December 3rd, 2015
Way back in June, John Christy and I called 2015 as being the warmest year on record…in the surface thermometer data. Given the strong El Nino in progress, on top of the official thermometer data warming trend, this seemed pretty obvious.
Of course, everyone has their opinions regarding how good the thermometer temperature trends are, with periodic adjustments that almost always make the present warmer or the past colder.
But I’m not going there today…
Instead, I’m going to talk about our only truly global dataset: the satellite data. With the November 2015 data now in, it’s pretty clear that in our UAH analysis 2015 will only be the 3rd warmest year since the satellite record began in 1979. Based upon my calculations, this will be true no matter what happens in December (barring Armageddon).
The years are displayed with the warmest on the left, and the coldest on the right. The color coding and arrows have to do with El Nino years…
UAH and RSS
With the ever increasing divergence of surface temperatures (NASA GISS) from satellite ones (UAH/RSS), and the subsequent divergence of overheated climate models (IPCC CMIP5) to observed reality, it is worth some background on the atmospheric temperature measurement systems used to measure the temperature of the lower troposphere – the exact place where global warming theory is meant to occur and be measured :
Roy Spencer :
…if for no other reason than this: thermometers cannot measure global averages — only satellites can. The satellite instruments measure nearly every cubic kilometer – hell, every cubic inch — of the lower atmosphere on a daily basis. You can travel hundreds if not thousands of kilometers without finding a thermometer nearby.
The two main research groups tracking global lower-tropospheric temperatures (our UAH group, and the Remote Sensing Systems [RSS] group) show 2014 lagging significantly behind 2010 and especially 1998:
With only 3 months left in the year, there is no realistic way for 2014 to set a record in the satellite data.
Granted, the satellites are less good at sampling right near the poles, but compared to the very sparse data from the thermometer network we are in fat city coverage-wise with the satellite data.
In my opinion, though, a bigger problem than the spotty sampling of the thermometer data is the endless adjustment game applied to the thermometer data. The thermometer network is made up of a patchwork of non-research quality instruments that were never made to monitor long-term temperature changes to tenths or hundredths of a degree, and the huge data voids around the world are either ignored or in-filled with fictitious data.
Furthermore, land-based thermometers are placed where people live, and people build stuff, often replacing cooling vegetation with manmade structures that cause an artificial warming (urban heat island, UHI) effect right around the thermometer. The data adjustment processes in place cannot reliably remove the UHI effect because it can’t be distinguished from real global warming.
Satellite microwave radiometers, however, are equipped with laboratory-calibrated platinum resistance thermometers, which have demonstrated stability to thousandths of a degree over many years, and which are used to continuously calibrate the satellite instruments once every 8 seconds. The satellite measurements still have residual calibration effects that must be adjusted for, but these are usually on the order of hundredths of a degree, rather than tenths or whole degrees in the case of ground-based thermometers.
And, it is of continuing amusement to us that the global warming skeptic community now tracks the RSS satellite product rather than our UAH dataset. RSS was originally supposed to provide a quality check on our product (a worthy and necessary goal) and was heralded by the global warming alarmist community. But since RSS shows a slight cooling trend since the 1998 super El Nino, and the UAH dataset doesn’t, it is more referenced by the skeptic community now. Too funny.
In the meantime, the alarmists will continue to use the outdated, spotty, and heavily-massaged thermometer data to support their case. For a group that trumpets the high-tech climate modeling effort used to guide energy policy — models which have failed to forecast (or even hindcast!) the lack of warming in recent years — they sure do cling bitterly to whatever will support their case.
As British economist Ronald Coase once said, “If you torture the data long enough, it will confess to anything.”
So, why are the surface thermometer data used to the exclusion of our best technology — satellites — when tracking global temperatures? Because they better support the narrative of a dangerously warming planet.
Except, as the public can tell, the changes in global temperature aren’t even on their radar screen (sorry for the metaphor).
The temperature divergence, this century, between NASA GISS temp (land based) and RSS satellite data, is mind-blowing.
Looks like someone is adjusting the curve to fit the ‘global warming’ narrative. Gavin? Tom?
Paul Homewood from NOT A LOT OF PEOPLE KNOW THAT :
Between 1979 and 2001, the RSS satellite data increased at virtually the same rate as GISS. Since then, there has been a massive divergence, with GISS claiming that the pace of increase has barely reduced from the earlier period.
In contrast RSS (and also UAH) confirm that, if anything, temperatures have been dropping.
It’s time to call the fraud squad in.
- The robust Pause resists a robust el Niño Still no global warming at all for 18 years 9 months | Climatism
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- Yes, there is a pause, and the Washington Post now admits it. UPDATE: But not Obama | Climatism
- 97% of climate models say that 97% of climate scientists are wrong | Climatism
- Biggest Fraud In History – Perpetrated By Tom Karl And Gavin Schmidt | Climatism
- Government Scientists Continue To Ramp Up Their Criminal Activity Ahead Of Paris | Climatism
Climate alarmist industry headlines “Hottest Year Ever” :