No winter in HK in half a century?

The HK Observatory must have missed the controversy it stirred last year. As it is making noise again. The new story? -- No winter in HK in half a century.

Yeah, right, global warming, skyscraper trapping heat and that. I just do not believe these linear projections. People also said, China's GDP/cap grows at 10% p.a., at this rate it will surpass that of US in 20 year ( (50000/7000) at 10% p.a.-- PPP) or 33 years (log(50000/2000)/log(1.1) at nominal).

A few issues to consider

• There's got to be some negative feedback (i.e. self correcting) factor in any system, especially so as HK is not a close system by itself. It has only 1050km² of land where the so-called "skyscraper trapping effect" is only applicable to some 20% of the area.
• As for the global trend in "warming", let's also remember that it is far from conclusive (see the other side of the argument). Furthermore, it may not be just global. It may be pan-solar-system. e.g., The temperature in Mars has risen by a comparable amount during the same period.
• I also do not understand why the skyscraper can trap the heat but not the coolness as Mr Lam claimed

Maybe Mr Lam is trying to be funny. He said, "We would really start losing the very distinct seasonal march throughout the year".

Anyway, I would believe Deng Xiaoping if Deng and Lam contradicts. Deng told us HK will not change for half a century. @_@