VietNamNet Bridge – Acid deposition and photochemical smog have appeared in recent years, mostly in summer months when the weather is dry and hot, especially in large urban areas such as Hanoi and HCMC.
According to Nguyen Van Thuy, director of the Environment Monitoring Center, besides domestic polluting sources, Vietnam is facing cross-border pollution as it is located next to countries with strong production such as China.
Thuy said Vietnam also bears influences from territories relatively far away from Vietnam. In winter, when the northeast monsoon comes down to the north, the pollutants from China are brought to Vietnam.
Though scientists still have not found clear signs of acid deposition, photochemical smog and cross-border pollution, there have been some certain signs. Tiếp tục đọc “Mercury crosses border gates, affecting environment”