Tính toán phát thải khí do hoạt động giao thông vận bao gồm kẹt xe áp dụng cho thành phố hồ chí minh

VNU Joumal of Science: Eaith and Environmental Sciences. Vol. 30. No. I (2014) 12-21

Calculate Road Traffic Air Emissions Including Traffic jam:

Application over H6 Chi Minh City, Vietnam

Ho Qu6c Bang*

Institute for Environment and Resources (lER), VNU-HCM. Vietnam.

142 To Hien Thanh st, DistlO, HoChiMinh. Vietnam

Refd\ed 05 December 2013

Re\ ised 26 December 2013: Accepted 28 March 2014

Abstract: Road traffic emissions are ihe main sources of uncertainties in air quality numerical

models used to forecast and define abatement strategies. Available models lo calculate road traffic

emission always require a big effort, money and time. So that in this research we used a model

namely EMISENS model for calculation air emission inventories over Ho Chi Minh City

(HCMC), Vietnam. However, this model can not calculated air emission inventories in temporal

and take into account the naffic jam. The first aim is to improve the calculation method including

phenomena of traffic jam and integrated it in the EMISENS model. Then, study scenarios to

reduce air pollution caused by road traffic activities for HCMC until 2020. The results shown that

when calculating emissions we have to take into account traffic jam. Emissions calculated resuhs

taking into account traffic jams shown that motorcycle emissions occupy most emissions of CHj,

CO, NMVOC, SO; and NO^ (more than 88%, 85%, 82%, 70 % and 31.5% respectively, of the

total emissions fiom road transport activities in HCMC). The first scenario is the reduction

scenarioforlheyearof2020, its results shown that the emissions of the city will be increased very

low (increasing 2-8% from 2012). The current vehicle technology is old and outdated techniques.

Therefore, if we want to invest in buses to replace motorcycle, air pollution in HCMC will become

aggravates.

Keywords Traffic emissions; traffic jam; H6 Chi Minh City; EMISENS model; Air Pollution.

1. Introduction the GSO on 01/04/2010, the population of the

city is 7,382,287 people. In 2010, HCMC has

H6 Chi Minh City (HCMC) is the highest 2,912,825 motorcycles and 299,392 cars,

population-concenn-ated city in Vietnam, with Pnvate transportation including mainly

over six million people in 2006 and annual motorcycles accounts for 96.3% of total

mcreases of 110.000 people. Located between transportation in HCMC while public

southeastern region and southwesiem region of transportation only accounts for 3.7% [1].

Vietnam, il is an important center of economic, Recently, along with high economic

education and culture in Vietnam. According lo development, Vietnam is facing the problem of

. air pollution in general and particularly a u

• Tel; 84-906834630. pollution caused by transportation activities.

E-mail: bangquocgj'ahoo.coin '^