Project's information

Project's title Research and development of air quality monitoring system by remote sensing and Lidar technology, trial application in Hanoi and Da Nang city
Project’s code VT-UD.11/17-20
Research hosting institution Institute of Environmental Technology
Project leader’s name Dr. Le Thanh Son
Project duration 01/11/2017 - 30/04/2021
Project’s budget 5,280 million VND
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Goal and objectives of the project

- General objective: Research and application of Lidar and remote sensing technology in environmental monitoring in Hanoi and Da Nang city.
- Detail goal:
• Research and application of remote sensing and lidar technology in air quality monitoring;
• Building an information system for management and environmental monitoring using lidar, remote sensing and monitoring data;
• Proposing the solution in order to control and overcome air pollution in Hanoi city and Da Nang city.
Main results

- Theorerical results:
+ Built the land cover maps (scale 1: 25 000) for Da Nang and Hanoi cities by VNREDSat-1 high-resolution remote sensing image data to identify sources of air pollution.
+ Determine the aerosol optical thickness of the atmosphere in Hanoi and Da Nang using MODIS remote sensing images and Lidar spectroscopy, 0.167 and 0.1497 respectively.
+ Built the algorithms for air pollution parameters: In Hanoi, the results obtained are quite good with the correlation value of R2 for PM2.5 is 0.84, for PM10 is 0.87, for TSP is 0.89, NO is 0.93, NO2 is 0.84 and NOx is 0.93. In Da Nang, the results are similar with the correlation value of R2 for PM2.5 is 0.79, for PM10 is 0.81, for TSP is 0.79; for NO is 0.81, for NO is 0.78 and NOx is 0.86.
+ Developed a near-real-time air quality monitoring system based on an open source geographic information system (WebGIS) for Hanoi and Da Nang city.
 + The process of air quality monitoring by remote sensing and lidar has been proposed. This process can extract daily air quality results continuously and monitor over a large area over a long period to understand trends in air quality.
- Applied results: Technological products of the project are applied in Hanoi and Da Nang cities.
Novelty and actuality and scientific meaningfulness of the results

The results of the project will be a useful tool for environmental management agencies in general, and the atmospheric environment in particular in Hanoi and Da Nang, as a basis for replication to other cities in the country.
Products of the project

- Scientific papers in referred journals (list):
[1] Bao Anh Phung Ngoc, Hervé Delbarre, Karine Deboudt, Elsa Dieudonné, Dien Nguyen Tran, Son Le Thanh, Jacque Pelon, François Ravetta. Key factor explaining severe air pollution episodes in Hanoi During 2019 winter season. Atmospheric pollution research, 12(2021) 101068.
[2] Lê Thanh Sơn, Nguyễn Trần Điện, Phùng Ngọc Bảo Anh, Đinh Ngọc Đạt, Nguyễn Anh Dũng, 2021, Nghiên cứu mối tương quan giữa nồng độ NO2 và các yếu tố khí tượng. Tạp chí Tài nguyên và môi trường, kỳ 2, tháng 4.2021.
- Technological products (describe in details: technical characteristics, place):

No Product name Quantity Storage
1 Report on methods and technology procedures for monitoring air environment by remote sensing and lidar technologies 01 report

- Institute of Environmental Technology,
- Institute for Scientific Information, VAST
- National Space Science and Technology Program Office
- National Agency for Science and Technology Information
2 Air quality monitoring data set at continuous and instantaneous monitoring stations (PM 2.5, PM 10, CO, NO ...) 01 dataset

- Institute of Environmental Technology,
- Institute for Scientific Information, VAST
- National Space Science and Technology Program Office
- National Agency for Science and Technology Information
3 Land cover maps scale 1:25000 of research area 02 maps

- Institute of Environmental Technology,
- Institute for Scientific Information, VAST
- National Space Science and Technology Program Office
- National Agency for Science and Technology Information
4 Thematic map set at 1:50,000 scale on air quality and potential polluting objects in Hanoi and Da Nang city. 02 sets of maps

- Institute of Environmental Technology,
- Institute for Scientific Information, VAST
- National Space Science and Technology Program Office
- National Agency for Science and Technology Information
5 Report on assessing spatial distribution of air quality and proposing solutions to control and overcome air pollution in Hanoi and Da Nang cities 02 reports

- Institute of Environmental Technology,
- Institute for Scientific Information, VAST
- National Space Science and Technology Program Office
- National Agency for Science and Technology Information
6 WEBGIS information system provides near-real-time air quality information in Hanoi and Da Nang city. 01 system - Institute of Environmental Technology

- Other products (if applicable): Education:
+ 02 masters successfully defended thesis
+ 01 philosophy doctor (defended in 2022).
Research area

-  Hanoi Center for Environmental and Natural Resources Monitoring.
- Da Nang Center for Environmental and Natural Resources Monitoring.
Images of project
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