Annex I           Weather Condition During Baseline Noise Monitoring at Ash Lagoon and Pak Kok Tsui

 

Date

Weather Condition

a.  Ash Lagoon

01/11/2000

Fine

02/11/2000

Fine

03/11/2000

Fine

04/11/2000

Cloudy

05/11/2000

Fine

06/11/2000

Cloudy

07/11/2000

Cloudy

b.  Pak Kok Tsui

24/11/2000

Fine

25/11/2000

Fine

26/11/2000

Cloudy

27/11/2000

Fine

28/11/2000

Fine

29/11/2000

Fine

30/11/2000

Fine

 

Adverse meteorological conditions, such as strong wind, heavy rain and thunder, would affect the noise measurements.  For the existing Ching Lam noise monitoring station, the computer has been programmed to automatically discard the noise data when the instantaneous wind speed measured at the station building rooftop exceeded 10 m/s.  In case when there is a thunder or heavily raining, winds may not be strong enough to inhibit data, then noisy thunder and rain would have to be manually correlated with the alarm/events.  If a noise alarm were raised, the operations staff on duty round the clock would record the event.  The relevant data would then be manually discarded.