Quote:
Originally Posted by dhdh
Stumbler., you will see that generally in India, the hottest months are right before the advent of the monsoon, e.g. May in Delhi when it peaks at 40°C, but as you say that's generally dry months.
I went a few times to Delhi and I noticed there are two kind of days (around July) : dry, sunny 40°C; and 27°C heavy rain.
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I know that very well from places in Australia with climates like Delhi such as Burketown.
In
January 2009, Burketown and Mount Isa had their coolest January on record, with not one day above the mean maximum. This may contradict global warming, but it does not: the mean
wet bulb temperatures would no doubt have been far above normal because of the hugely above-average humidity caused by the super-monsoon.
Super-monsoons did not occur in Australia before the continent’s record “wet” of
January 1974 but with man-made global warming have become increasingly frequent and the Hadley circulation, formerly restricted to latitudes north of 25˚S, has expanded by over seven degrees since 1967, so the Perth effectively has the former climate of Carnarvon, and Tennant Creek that of Katherine. Since 1974, super-monsoons have occurred in
1976,
2000,
2001,
2004, 2006 and
2011.
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