BQNA
Air Quality Study
Q2: Under which conditions do higher UFP levels occur?
UFP Double During Southerly vs. Northerly Wind
When the wind blows from the south
- Analysis time window: 6 a.m. – 10 p.m.
- Southerly wind
- Ferry Terminal downwind vs. Hanlan’s Point upwind
- June 2022 – August 2022
Lower UFP Concentrations during the COVID Lockdown
- Pre-Lockdown: Jan 21 – Feb. 27, 2020
- Lockdown: Apr 20 – Jun 12, 2020
- Recovery: Jul 27 – Sept 15, 2020
- Post-Lockdown: Jun 8 – Aug 22, 2022