CLIMATE AND AIR QUALITY CO-BENEFITS OF IMPROVING TAXI SYSTEM IN HA LONG CITY, QUANG NINH

Co-benefits of improving taxi system in Ha Long city, Quang Ninh province were studied. Three areas and nine routes in the urban area of Ha Long were selected for conducting this study. Information on the technical specifications of the taxi system was collected by 130 questionnaires. Taxi volume on nine selected routes was determined by vehicle counting. Real-time information on the driving behavior of taxis was obtained by GPS. Collected data were processed to generate input files to run IVE model associated with the base state and 4 selected air pollution control scenarios. Emission factors of air pollutants of the taxi system in Ha Long for these cases were determined. Climate and air quality co-benefits were assessed. Keywords: Co-benefit, Ha Long, IVE model, taxi, air quality, climate, emission factor

XÁC ĐỊNH LUẬT PHÂN BỐ XÁC SUẤT CỦA DỮ LIỆU CHẤT LƯỢNG KHÔNG KHÍ ĐƯỢC QUAN TRẮC TẠI HÀ NỘI

A study to determine the probability distribution of air quality data measured at Hanoi was conducted using the statistical software of SPSS. Data used are hourly average concentrations of air  pollutants  including  SO2,  NO2,  CO,  O3,  TSP  and  PM10  collected  from  Lang  automatic ambient air quality monitoring  station, Hanoi  for a period of about 8 years,  from  July 2002  to May 2010. Obtained  results show  that  the Weibull distribution was fitted  to  the data of hourly average concentrations of  these air pollutants. As a result, Probability Density Function (PDF), f(x) and Cumulative Distribution Function (CDF), F(x) for these set of data were determined