VietNamNet
Bridge – The average temperature in HCM
City has been increasing rapidly and steadily in the last three decades, while
the gap between the temperature of the city and neighboring areas has widened.
HCM
City dwellers all say that they can clearly feel it is getting hotter and
muggier. Experts have blamed this on the rapid and uncontrolled urbanization
process, which has put the city under the influence of the urban heat island
effect.
Hot in daytime and at night
HCM
City is experiencing the hottest days in the year. The average temperature
always stays firmly high at 36-37oC, while the outdoor temperature reaches
38-39oC, which has turned HCM City into a “hotbed”. Local residents only go out
when necessary, while they have to hide themselves behind thick clothes to
avoid the heat and sun. All the verdure areas in the city have been used by
local residents to get some fresh air.
According
to the meteorological station in the southern region, the spell of heat started
in March and would last until mid May. This means that the city residents would
have to cope with the hot weather for at least 1 month more.
Le Thi
Xuan Lan, an officer of the station, said that the temperature at noon reaches
36oC and would reach 37-38oC in the days to come. Meanwhile, the temperature on
the Hanoi Highway or the Highway No. 1A would be even higher, at 39oC.
Nguyen
Minh Giam, Deputy Director of the meteorological station, said that concrete
houses have risen so rapidly in recent years, while the verdure areas remain
modest, which has made people feel hotter.
“The
temperatures of 36-37oC maintains all the day, and it is also very hot at
night. Especially, the districts 1, 3, 4, 5, 10 and 11 are the hottest areas in
the city due to the lack of verdure area,” Giam said.
A
recent research work showed that in the last 30 years, the average temperature
in HCM City has increased by 1oC, while the temperatures have been increasing
very slowly in neighboring localities, including the Mekong Delta and Xuan Loc
town in Dong Nai province.
“This
means that the temperature has increased in HCM City because of the city’s
conditions, not because of the climate change,” Lan said.
Urbanization creates hotbeds
Experts
have pointed out that the uncontrolled urbanization in HCM City has heated up
the city every day. As a result, the city is bearing the serious influences of
the urban heat island effect.
The
surface concrete area has become very large, while the water surface and
verdure areas have decreased. Therefore, the heat rushed down to the city
cannot be absorbed by trees. This is also the reason which explains why there
have been more and more heavier tropical rains in the city.
According
to Dr Luu Duc Cuong from the Ministry of Construction, the urbanization process
over the last 14 years has led to the disappearance of 47 canals with the total
area of 16.4 hectares, while 7.4 hectares of the Binh Tien Lake have been
filled up for building houses. The area of parks, gardens has decreased
dramatically by 50 percent to 535 hectares.
“The
uncontrolled urbanization is one of the most important reasons behind the
flooding in HCM City,” Cuong said.
Meanwhile,
the volume of heat emission to the air has increased sharply due to the rapid
population increase, thus leading to the sharp increases in the number of
transport means and air conditioners.
Source:
Lao dong
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