DENIERS ATTACKS ON NASA
Svertekampanjene/angrepene mot NASA.
SCIENCE DENIERS ARE ALL THE SAME:
For some strange reason, NASA is a popular target for many fringe cult conspiracy drivlers:
De kyniske svertekampanjene mot NASA sin klimavitenskap foregår både direkte, men og indirekte. At NASA har fikset på grafer har vi fått høre lenge. Her debunkes en av klimafornekternes mest brukte løgnhistorier.
"We rate the claim Pants on Fire."
Even fellow deniers have debunked Goddards silly hoax. And this is too funny:
Anthony Watts, a popular skeptic of most climate change data, posted his objection to Goddard’s claim.
Flere av angrepene på NASA oppklares her. Se og avsnittet om The Global Warming Swindle (sic)-filmen sist i del 3.
THE NASA STUDY DENIERS LOVE TO RECYCLE
A new NASA study found that there has been a net increase in land ice in Antarctica in recent years, despite a decline in some parts of the continent. The study's lead author astutely predicted that climate science deniers would distort the study, even though it does nothing to contradict the scientific consensus on climate change or the fact that sea levels will continue to rise.
During their study period, which included data from 2003 to 2013, Antarctica as a whole added to sea level rise, they found. “In every experiment, mass loss from the west always exceeded gains in the east,” lead author Jonathan Bamber of the University of Bristol said in a media release.
1. It is critical to use the most optimal corrections for instrument biases (the ICESat data used need to have the appropriate saturation bias corrections to get real-world answers that are reproducible)
2. The most-accurate densities of snow have to be used
3. The most-optimal values for changes in bedrock elevation (GIA) in response to ice sheet mass changes have to be used
Looking at even more recent studies, per Gardner et al 2018:
"Including modeled rates of snow accumulation and basal melt, the Antarctic ice sheet lost ice at an average rate of 183 ± 94 Gt yr−1 between 2008 and 2015."
Results from the recent IMBIE Team from 2018, too new to be incorporated in the Global Warming Primer, show that Antarctic ice sheet mass losses are accelerating, tripling their contribution to global sea level rise since 2012.
Lastly, Bamber et al 2018 subtly but firmly savages Zwally et al 2015:
"Issues with the approach used for calibration of the altimetry by Zwally et al have been identified (Scambos and Shuman 2016) and an attempt to replicate the trends using similar assumptions for the physical mechanism could not reproduce the large positive balance they found (Mart´ın-Espanol ̃ et al 2017). For these reasons, we believe that the estimates from this study are likely erroneous"
The values for the Antarctic ice sheet mass balance from NASA GRACE are the most current available (to January 2017). An ever-strengthening, consilient body of research using multiple methods all point to that conclusion.
E. Gardner et al 2018 - Increased West Antarctic and unchanged East Antarctic ice discharge over the last 7 years
F. The IMBIE Team 2018 - Mass balance of the Antarctic Ice Sheet from 1992 to 2017
G. Bamber et al 2018 - The land ice contribution to sea level during the satellite era
Study shows global sea ice diminishing, despite Antarctic gains
Slik ser det ut når Antarktis-isen "vokser" blir fordreid og misforstått i media:
American Thinker: "The Fraud Is Falling Apart." Conservative blog American Thinker published a blog post headlined: "Oh-oh! NASA study finds Antarctic ice cap growing." In it, American Thinker asserted that the global warming "fraud" is "falling apart." [American Thinker, 11/2/15]
The Telegraph: Antarctic Ice Growing "Despite Fears Over Global Warming." The Telegraph reported: "Antarctica's ice floes have been found to be growing faster than they are shrinking despite fears over global warming." [The Telegraph, 11/2/15]
The Daily Express: "What Global Warming?" The Daily Express published an article headlined, "What global warming? Antarctic ice is INCREASING by 135 billion tonnes a year, says NASA." The article asserted: "Global warming theories have been thrown into doubt after Nasa also claimed current horror predictions into future sea-level rises may not be as severe." [The Daily Express, 11/2/15]
This is climate skeptics’ latest argument about melting polar ice — and why it’s wrong
However, as I wrote about these Antarctic news stories over the past two weeks, I became aware that those skeptical of human-caused climate change (whether its existence, or its severity) had found a new argument to minimize concerns about polar ice melt. In particular, I came across numerous citations of a much-read article at Forbes by James Taylor, titled “Updated NASA Data: Global warming not causing any polar ice retreat.”
There are many problems with this claim. In effect — and as we’ll see — Taylor is falling into a long climate “skeptic” tradition of pointing toward growing sea ice around Antarctica, and thereby suggesting that this trend undermines broader concerns about polar ice melt, or climate change in general.
Taylor doesn’t appear to distinguish between what’s happening to sea ice in the Arctic and the Antarctic. But if you pull apart these two components of the analysis — as NASA itself has recently done — then sure enough, you find a sharp decline in Arctic sea ice, a modest increase in Antarctic ice, and an overall decline in total sea ice.
Her er en annen oppklaring, og nå faller brikkene på plass. Saken var skrevet av den Exxon-sponsede tankesmien Heartland Institute:
"As the latest example, look at an op-ed in Forbes magazine written by Heartland Institute’s James Taylor (yes, that Heartland Institute). Taylor has a history of cherry-picking and distorting results from real climate scientists, and he’s doing the same thing here."
"But note how Taylor phrases it, using “global” ice. That includes Antarctic sea ice, but as I have written about over and over again, that is really unfair. Antarctic sea ice is very different than at the North Pole; Antarctica is a continent and conditions there are literally polar opposites. The southern sea ice fluctuates quite a bit year to year, and in fact wind-driven snow can be increased by global warming (warmer air can hold more moisture), so glossing over local conditions the way Taylor does is at best misleading.
And in actual fact, land ice in Antarctica is melting away extremely rapidly, and worldwide we’re losing 450 billion tons of land ice every year.
Does NASA Data Show That Global Warming Isn’t Causing a Sea Level Rise?
Dubious web sites generously provided the Internet with textbook examples of both cherry-picked data and the shameless conflation of weather with climate.
Were Scientists Caught Tampering with Raw Data to Exaggerate Sea Level Rise?
NASAs view on sea level rise:
Attacks on climate science by former NASA staff shouldn't be taken seriously
A letter from former administrators, astronauts, and engineers at NASA expressing climate change scepticism does not deserve parity with the agency's peer-reviewed climate scientists.
We have seen many examples of climate denialists producing long lists of fake experts, for example the Oregon Petition and the Wall Street Journal 16. Now we have yet another of these lists of fake experts. 49 former National Aeronautics and Space Administration (NASA) employees (led by Harrison Schmitt, who was also one of the Wall Street Journal 16) have registered their objection to mainstream climate science through the most popular medium of expressing climate contrarianism - a letter. As is usually the case in these climate contrarian letters, this one has no scientific content, and is written by individuals with not an ounce of climate science expertise, but who nevertheless have the audacity to tell climate scientists what they should think about climate science.
Response from NASA Chief Scientist Waleed Abdalati to Letter on NASA Climate Studies:
"NASA sponsors research into many areas of cutting-edge scientific inquiry, including the relationship between carbon dioxide and climate. As an agency, NASA does not draw conclusions and issue 'claims' about research findings. We support open scientific inquiry and discussion.
"Our Earth science programs provide many unique space-based observations and research capabilities to the scientific community to inform investigations into climate change, and many NASA scientists are actively involved in these investigations, bringing their expertise to bear on the interpretation of this information. We encourage our scientists to subject these results and interpretations to scrutiny by the scientific community through the peer-review process. After these studies have met the appropriate standards of scientific peer-review, we strongly encourage scientists to communicate these results to the public.
"If the authors of this letter disagree with specific scientific conclusions made public by NASA scientists, we encourage them to join the debate in the scientific literature or public forums rather than restrict any discourse."
MORE DEBUNKS of the 49 letter:
Breath-taking climate denial nonsense, this time aimed at NASA
NASA EXPLAINS GISS DATA:
Whats more plausible?