Andrew Bolt claims that “new research” “once more shows Al Gore faked his findings in An Inconvenient Truth”. He offers his own translation of something which he attributes to “Elsevier”: (Yes, the company that publishes The Lancet.)
Frormer [sic] American vice president and Nobel Prize winner Gore has for years used the melting snow on Africa’s highest mountain (5892 metres) for his climate propaganda. The snow cover is shrinking and that is caused by man and his greenhouse gases!
The Dutch scientist Jaap Sinninghe DamstÃ© debunks this story of climate guru Gore in the leading periodical Nature.
A natural process of large climate shifts seems to be the true cause, says the Dutch Organisation for Scientific Research on Thursday….
The researcher and European colleagues discovered that Kilimanjaro underwent successive periods of heavy monsoons and extreme dryness. Ice and snow retreat from the top in dry periods and return in the very wet ones….
Al Gore must find another symbol for his climate problem. Kilimanjaro does now have little snow on the peak, but that seems to be completely natural.
Well, it seems unfair to criticize Gore for not including the results of research published only yesterday. It is, however, perfectly fair to criticize Bolt for not including the results of the research in a post about that research.
Verschuren et al do find that ice and snow on Kilimanjaro retreat during dry periods and advance during wet periods. But they don’t find that the current retreat is natural. Look:
In its entirety, the 25,000-year Challa BIT record (Fig. 2g) implies relatively moist conditions in equatorial East Africa during the periods >25-20.5 (H2 excluded), 14.5-8.5 (the Younger Dryas excluded) and since 4.5 cal. kyr bp; and relative drought during the periods 20-16.5 and 8.5-4.5 cal. kyr bp.
So we are in a relatively moist period and the ice should be advancing and not retreating.
Verschuren et al also state:
The end of African Younger Dryas drought [YD in the figure above] at Challa matches the tentative age assigned to the base of the current ice cap on Mt Kilimanjaro.
So the Kilimanjaro ice cap survived the relative drought 8,500-4,500 years ago and now it’s vanishing during a relatively moist period. This doesn’t conclusively prove that global warming is responsible, but it is good evidence that it is.
Bolt continues (link adjusted by me):
No doubt a correction of this and all the other errors and exaggerations in Gore’s film, which made much of Kilimanjaro’s snow cover, will be sent to the millions of students forced to watch it as a lesson in “science”.
No doubt Bolt will write a new post to correct the record and inform his readers that the new study supports Gore’s claim. No doubt.