October 25, 2008

Weather Observation Course by Hong Kong Observatory - Lesson 2

Some weather information, such as temperature is not possible to be observed by our eyes. Thus, meteorological instruments are required.

This is thermometer shed. The open design allows better air circulation and can lead to more accurate temperature measurement in the air. The slanting roof prevents sunlight to affect the temperature inside the shed. This shed is a major source of our daily weather information.



Thermometer screen box is another instrument to measure temperature. Yet, the thermometer shed is better because of better air circulation.


This small bucket collects raindrop if any. With a cylinder, we can know rainfall information in Hong Kong. The instrument is called ordinary raingauge.


For heavy rain, more accurate information is needed. Show time for this drop counting rainfall recorder.


Apart from understanding the instruments, students also learnt about weather report and weather related proverbs. The former is very useful because we can now decode a lot of information from a simple symbol. The latter is more of fun. But it's good to know different season or geographical location may affect the accuracy of the proverbs.

The course combines only 2 lessons. Nevetherless, it's a serious course. We had lots of notes, including a CD version. We had a weather observation exercise to pracise what we had learnt in lesson 1. We had class graduation photos. The most important point is we are awarded a certificate. It really suprised me.

Moreover, we have a pen and a keyring. The yellow figure is Break representing Lightening in the "Weather Family" cartoon. Other members can be found at here.


Lastly, thanks for all earnest instructors' effort.

October 11, 2008

Weather Observation Course by Hong Kong Observatory - Lesson 1

Weather Observation Course
Organizer: Hong Kong Observatory
Date: Oct 11 and 25, 2008
Venue: Hong Kong Observatory Headquarter (Tsim Sha Tsui, Kowloon, Hong Kong)

The 1883 Building is a heritage which was built in 1883. Now, it serves as the main office for the government department.


Practice is the best way of learning how to observe weather. This fish scale like clouds are altocumulus,
Ac in short (高積雲). A member of middle cloud (中雲族) with a bottom height between 8,000 - 15,000 feet. Weather is usually good if only they are in sky alone.

Another practice is visibility. It's measured by distance between the farthest and visibly clear object from the standpoint. This information is useful for all types of transport.


Satellites for collecting weather information from observatories of other countries / cities. They are located on the roof of another building at the headquarter.



HK typhoon warnig signals displayed in the exhibition hall. Signal 8 is probably the most welcome by the majoriy of workforce / students as they can have day off.


Damage by the nature.


Meteorological instruments are also availiable in the exhibition hall.