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Location:

The NUS weather station serves primarily academic needs and is maintained by the Department of Geography. The station is located on the rooftop of building E2 (Faculty of Engineering) of the National University of Singapore, Kent Ridge campus, near the South coast about 9 km West of the city center (please see: city map and campus map). At a height of about 90 m above sea level it is the highest point in the region and therefore enjoys excellent exposure. Because it is located on a small ridge, however, the positioning of the instruments does not conform to WMO guidelines for weather stations in open terrain or recommendations for urban areas. It is the first weather station in Singapore to provide real-time meteorological data for free to students and the general public.

The geographical coordinates are approximately: 1 deg18 min N (latitude) and 103 deg 46 min E (longitude).

Time:

Local time (24 hrs) is watch time. Local apparent time (LAT) is watch time minus ~1 hr. Weather observations are usually reported in UTC (Universal Time Coordinates). This allows weather from all over the world to have the same time stamp. Local Singapore time is 8 hours ahead of UTC (UTC + 8 hours).

Instrument Specifications:

 
 
 
 

Variable
 


Instrument

 


Manufacturer
(Model)

Vaisala (PTB101B - CS105)

Vaisala (CS500)

Vaisala (CS500)

RM Young (wind sentry set 03001)


RM Young (wind sentry set 03001)


LI-COR (LI-200X)



Hydrological Services (CS700)


SOLAREX (MSX15R)

CSI (CR10X)

 


Units

 

kPa

deg C


% RH


m/s


0-360
deg (c.w.)


W/m 2



mm/time (5 min or 1 hr)


W


Accuracy

+/- 0.2 kPa at 20 degC

+/- 0.5 deg C

+/- 2.5 % RH

+/- 0.5 m/s
Threshold: 0.5 m/s


+/- 5%



+/- 3% (typical)


+/- 2%
Resolution: 0.2 mm

Pressure

Air temperature
Relative humidity
Wind speed


Wind direction


Incoming solar radiation

Total rainfall

 

Power

Barometric pressure sensor

T sensor


RH sensor


Cup anemometer


Wind vane



Pyranometer



Raingauge


Solar panel

Data logger