Whenever NASA GISS announces how recent global temperatures are much hotter than, for example, 100 years ago, just how statistically reliable are such statements?
Most will agree, based mainly on sundry observations, that today is indeed warmer than it was when surface temperatures began to be recorded back in 1880.
But we will never really know how much.
Surface station datasets full of gigantic voids
When we look at NASA GISS’s site here, we can see how many surface stations have data going back to earlier years. Today we see that 2089 stations are at work in Version 3 unadjusted data.
Yet, when we go back 100 years (to 1919), we see only 997 of these surface stations have Version 3 unadjusted data that is complete:
Note how the Version 3 unadjusted datasets going back to 1919 are poorly distributed and sorrowfully lacking over Africa, Canada, the Arctic and all across the Southern Hemisphere. Never mind the oceans.
Only a measly 174 surface stations go back to 1880!
And when we look at the number of stations in Version 3 unadjusted data going back to 1880, ONLY 174 stations actually provide us with a complete thermometer dataset:
As is shown, Version 3 unadjusted data going back to 1880 covers only some parts of the US and Europe. All of Canada and Russia are void of data, and so it is impossible to know what the temperatures really were there.
The same is true for the entire southern hemisphere, let alone the entire globe. The bottom line: There is no way of knowing what the global temperature really was back in the late 19th century and early 20th century.
Japanese expert: data of “no scientific value”
This tells us that global temperature trends since the start of the Industrial Revolutions presented by NASA are fraught with huge uncertainty.
“This is nothing new,” says Japanese climate expert Dr. Mototaka Nakamura in an email to NTZ. “We simply did not have many observing stations in the 1800s and early 1900s. They can produce ‘new datasets’ and claim that they have ‘better datasets’ all day long, but they just can’t make any meaningful difference for periods up to 1980.”
“Not real data”
“These datasets are products of simulation models and data assimilation software, not real data,” Dr. Nakamura added. “This problem has been present in data products produced by all institutions from the beginning – NASA, NOAA, NCEP, ECMWF, UMet, etc.”
“Spatial bias before 1980 cannot be dealt with”
But the data shortcomings get even worse. Dr. Nakamura wrote: “A far more serious issue with calculating ‘the global mean surface temperature trend’ is the acute spatial bias in the observation stations. There is nothing they can do about this either.
No matter what they do with the simulation models and data assimilation programs, this spatial bias before 1980 cannot be dealt with in any meaningful way. Just look at the locations of the observation stations used in GISS products for various years on their page.”
Dr. Nakamura commented earlier here at NTZ: “The global surface mean-temperature change data no longer have any scientific value and are nothing except a propaganda tool to the public.”
So how can we be sure about the globe’s temperatures, and thus it’s trends before 1980? You can’t. The real data just aren’t there.
Read more at No Tricks Zone
I can still remember back in the 1990’s and their Save the Rain Forests scam the facts that the Congress Of Racial Equility(CORE) went after the Rain Forests Action Network for their telling their lies to school kids
In industry solid evidence is needed before a large investment is made. Now we were supposed to invest 10 $trillion when there is no data on warming since 1880.
The last time NASA actually got something right was 1969 .
Why is NASA even in the climate prediction racket anyways ?
Restore your credibility NASA and stick with real science for a change .
How could the numbers not be largely just made up ? Throwing some water bottles randomly over the side of ships sprinkled around small parts of the globe, sticking weather stations at the edge of jet runways and asphalt surfaces , having thousands of miles of completely unmonitored ocean and land data and no ability to accurately measure natural climate variables yet we are supposed to believe humans can adjust the earths temperature to within a degree or two ?
Christ no wonder they employ Hollywood actors to sell this garbage . Anyone with a brain that does a little bit of research can see it is a massive fraud happily enabled by rent seekers , lying politicians , and some scientists playing along for cash but lets just simplify it ….. it must be Russia right ?
Fifty years ago NASA was landing us on the moon fifty years later their blabbering out their mindless banter about SUV’s Backyard BBQ’s Air Conditoners and Global Warming/Climate Change. James Hansen needs a new job as a Janitor if he can deal out all that rubbish i,m sure he can clean it all up