Appendix F.
REPORT OF THE DIRECTOR
OF THE ROYAL OBSERVATORY, HONG KONG, FOR THE YEAR 1933.
I.-GROUNDS AND BUILDINGS.
Between 21st January and 24th March the radio mast was transferred from the south west to the north east of the Observatory building. In July the old telescope house was demolished and the building of new quarters for the Director was commenced upon the site formerly occupied by the telescope house and the mast. The new quarters are expected to be completed early in 1934, when the existing quarters will be taken into use as offices.
II. METEOROLOGICAL OBSERVATIONS.
2. As in former years, automatic records of the temperature of the air and evaporation were obtained with a Richard dry and wet bulb thermograph, and the direction and velocity of the wind with Beckley and Dines-Baxendell anemographs. Rainfall is recorded by a Nakamura Pluviograph, sunshine by two Campbell-Stokes universal recorders, and barometric pressure by a Marvin barograph. Eye observations of barometric pressure, temperature and cloud are made hourly, and the direction of cloud motion every three hours. Observations of pilot balloons are made with a Watts 11 inch prismatic theodolite at 9h. a.m. and 3h. p.m. when conditions are favourable.
3. The principal features of the weather in 1933 were:
(a) The abnormally low rainfall of August when 1.735 inches fell (1.090 inches in 24 hours) against an average of 14.216 inches. The percentage of cloudiness and total duration of sunshine were respectively the lowest and highest ever recorded in August.
(b) The absence of typhoons seriously affecting the Colony. The highest wind velocity recorded was 67 miles per hour on 29th June and 20th September.
In the first instance, a typhoon which formed in the China Sea to the south of the Colony on 27th June, passed between Hong Kong and Canton on a north-east track two days later. In the second instance a typhoon formed to the south of Pratas Island on the afternoon of 19th September, and passed very close to Hong Kong on 20th September. This disturbance had
Appendix F.
REPORT OF THE DIRECTOR
OF THE ROYAL OBSERVATORY, HONG KONG, FOR THE YEAR 1933.
I.-GROUNDS AND BUILDINGS.
Between 21st January and 24th March the radio mast was transferred from the south west to the north east of the Observatory building.-In July the old telescope house demolished and the building of new quarters for the Director was commenced upon the site formerly occupied by the, telescope house and the mast. The new quarters are expected to be completed early in 1934, when the existing quarters will be taken into use as offices.
II. METEOROLOGICAL OBSERVATIONS.
2. As in former years, automatic records of the tempera- ture of the air and evaporation were obtained with a Richard dry and wet bulb thermograph, and the direction and velocity of the wind with Beckley and Dines-Baxendell anemographs. Rainfall is recorded by a Nakamura Pluviograph, sunshine by two Campbell-Stokes universal recorders, and barometric pres- sure by à Marvin barograph. Eye observations of barometric pressure, temperature and cloud are made hourly, and the direc- tion of cloud motion every three hours. Observations of pilot balloons are made with a Watts 11 inch prismatic theodolite at 9h. a.m. and 3h. p.m. when conditions are favourable.
3. The principal features of the weather in 1933 were:-
(a) The abnormally low rainfall of August when 1.735 inches fell (1.090 inches in 24 hours) against an average of 14.216 inches. The percentage of cloudiness and total duration of sunshine were respectively the lowest and highest ever recorded in August.
(b) The absence of typhoons seriously affecting the Colony. The highest wind velocity recorded was 67 miles per hour on 29th June and 20th September.
In the first instance, a typhoon which formed in the China Sea to the south of the Colony on 27th June, passed between Hong Kong and Canton on a north east track two days later. In the second instance a typhoon formed to the south of Pratas Island on the afternoon of 19th September, and passed very close to Hong Kong on 20th September. This disturbance had
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