This work by Matthew Wong of the Department Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK Automatic Weather Station (AWS)
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This work by Matthew Wong of the Department Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
What is AWS?
•Integrated meteorological sensors•Automatic remote data acquisition•Collect weather information
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
All Components of AWSISS (Integrated Sensors Station)
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
TemperatureTwo Thermometers in AWSUnit: Degree Celcius (oC)
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Outdoor Thermometer
Radiation Shield
Why should it be installed in the radiation shield?
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Relative HumidityTwo Hygrometers in AWS
Represent in percentage (%)
Outdoor (ISS)
Indoor (Console)
Water vapor in air is saturated, no more water can be carried by air.
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Outdoor HygrometerInside radiation shield (next to the
thermometer)Working Principle:
Measure the change in resistance or capacitance to evaluate change in humidity.
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Rainfall
Bucket A collect raindrops
Bucket A heavy, fall and pour away rainwater +Bucket B rises and collect raindrops
Bucket B heavy, fall and pour away rainwater+Bucket A rises and collect raindrops
• 1 tip = 0.2 mm• Rainfall = tipping times x 0.2 mm
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Ultra Violet (UV) IndexWavelength(λ) for UVI:
295 to 325 nmAdjusted according to
the sensitivity of human skin (McKinlay-Diffey Erythema action spectrum)
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Solar RadiationPower of sunlight on
a surface - irradianceUnit:
Watt per meter square (Wm-2) - Power per unit area
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Solar and UV sensor
bubble level
Adjust the sensors until the bubble is at the centre of the black circle
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Wind Speed3 Wind Cups at Anemometer
Unit:
• Miles per hour (mph)• Kilometer per hour (km/h)• Meter per second (m/s)
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Wind DirectionRecord the wind
directionWind vane points to
where the wind come from
Mounting bar must point to north when install
Expressions:degree (o)16 directions
(i.e, E, S, W, N, NE, SE, NW, SW, NNE, ENE, ESE, SSE, NNW, WNW, SSW, WSW)
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
PressureBarometer in the consoleWorking principle:
Measure the resistance of thin film (薄膜 ) in piezoresistive (壓阻式 ) sensor exerted by the atmosphere
Unit: Millimeter of mercury (mmHg)Millibar (mbar)Hectopascal (hPa)
Pressure trend: important for weather forecastingUsed by HKO
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
ConsoleReceive and decode data
from sensor interface module
Display latest weather information
Transfer data to computer for:display and storagewebpage generation sending back to Co-WIN
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Co-WIN websiteWebsite: http://weather.ap.polyu.edu.hk/ Co-developed by
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Co-WIN websiteAWSs located at different school and
organization membersKeep sending data back every minute to Co-
WIN database server in the Department of Applied Physics, HKPolyU via internet
Provide latest weather information to the public
As a local weather reference complementary to weather stations of HKO
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
Co-WIN website
Parameters in weather map:TemperatureMax/Min TemperatureRelative HumidityWind SpeedRainfallUV IndexSolar RadiationPressure
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK
This work by Matthew Wong of the Department of Applied Physics, The Hong Kong Polytechnic University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Hong Kong License To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/hk/deed.en_HK