Letters
Grade A office will create heat island effect
Architect Oren Tatcher's argument suggesting not turning a concrete block into an urban oasis, but instead turning it into a bigger block, completely misses the point ('You can't turn a concrete block into an urban oasis', April 12).
I am sure by now most people can recognise the phrase 'urban heat island'.
A recent study by Professor Emily Chan of Chinese University's public health department attributes an increase of heat stress related mortality of 1.8 per cent for every degree beyond 28.2 degrees Celsius.
The urban climatic map that the Planning Department has published indicates that the areas around Central Market are experiencing a daytime urban heat island temperature of four to five degrees beyond the norm.
Scientifically, we all know what is causing it - bulky buildings forming walls blocking the needed air ventilation; podiums that occupy the whole site leaving no air volume around them; man-made materials that increase the thermal capacity of the urban environment; and the lack of urban greenery.
An oasis exists in a desert, not next to a park.