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cease, the local Government having decided to re-open the station as a signal station, and utilise the services of the signalman for looking after the anemograph and making meteorological observations six times daily.
III. METEOROLOGICAL OBSERVATIONS AT THE OBSERVATORY.
Automatic records of the temperature of the air and evaporation were obtained with a Richard dry and wet bulb thermograph and of the direction and velocity of the wind with a Beckley and a Dines-Baxendell anemograph, modified as described in the report for 1912. The amount of rain is recorded automatically by a Nakamura pluviograph, the amount of sunshine by a Campbell-Stokes universal sunshine recorder, and the relative humidity of the air by a small Richard hair hygrograph. Eye observations of barometric pressure, temperature of the air and of evaporation, and the amount of cloud were made at each hour of Hongkong Standard time. The character and direction of the motion of the clouds were observed every three hours. Daily readings were taken of self-registering maximum and minimum thermometer.
Photographic Registration with the Kew barograph ceased when the supply of bromide paper was exhausted on November 16th, 1919. A Marvin compensated syphon barograph, ordered last year, was expected before this date but has not yet arrived.
Principal Features of the Weather.-The principal features of the weather in 1919 were:-
(a) The large departures from normal from month to month in atmospheric pressure, temperature and wind.
(b) A typhoon, which produced a wind velocity of 60 m.p.h. at 7 p.m. on the 22nd August, and a squall at the rate of 84 m.p.h. at 1h. 17m. p.m. on the 22nd, although the centre passed about 150 miles to the south-west of Hongkong.
(c) Heat waves from June 15th to July 3rd, July 8th to 25th, July 31st to August 9th, and August 12th to 17th.
Barometric pressure was moderately above normal in February, July, and December, and considerably above in September. It was considerably below in June and August. In the latter month it was 29ins. 530, or the lowest on record except in 1911 when it was 29ins. 521. The mean pressure for the year at station level was 29ins. 842 as against 29.847 in 1918, and 29ins. 844 for the past 36 years. The highest pressure was 30s.398 on February 4th as against 30.391 in 1918 and 30.509 for the past 36 years. The lowest pressure was 29ins. 287 on August 26th as against 29ins. 108 in 1918 and 28.735 for the past 36 years.
The temperature of the air was considerably above normal in March and April, and moderately above in June. It was moderately below in February, October, November, and December. The mean
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cease, the local Government having decided to re-open the statio as a signal station, and utilise the services of the signalman for looking after the anemograph and making meteorological observa- tions six times daily.
III. METEOROLOGICAL OBSERVATIONS AT THE OBSERVATORY.
Automatic records of the temperature of the air and evapor- ation were obtained with a Richard dry and wet bulb thermograph and of the direction and velocity of the wind with a Beckley and a Dines-Baxendell anemograph, modified as described in the report for 1912. The amount of rain is recorded automatically by a Nakamura pluviograph, the amount of sunshine by a Campbell- Stokes universal sunshine recorder, and the relative humidity of the air by a small Richard hair hygrograph. Eye observations of barometric pressure, temperature of the air and of evaporation, and the amount of cloud were made at each hour of Hongkong Standard time. The character and direction of the motion of the clouds were observed every three hours. Daily readings were taken of self- registering maximum and minimum thermometer.
Photographic Registration with the Kew barograph_ceased when the supply of bromide paper was exhausted on November 16th, 1919. A Marvin compensated syphon barograph, ordered last year, was expected before this date but has not yet arrived.
Principal Features of the Weather.-The principal features of the weather in 1919 were:-
(a) The large departures from normal from month to month in atmospheric pressure, temperature and wind. (b) A typhoon, which produced a wind velocity of 60 m.p.li. at 7 p.m. on the 22nd August, and a squall at the rate of 84 m.p.h. at 1h. 17m. p.m. on the 22nd, although the centre passed about 150 miles to the south-west of Hongkong.
(c) Heat waves from June 15th to July 3rd, July 8th to 25th, July 31st to August 9th, and August 12th to 17th.
Barometric pressure was moderately above normal in February, July, and December, and considerably above in September. It was considerably below in June and August. In the latter mouth it was 29ins 530, or the lowest on record except in 1911 when it was 29ins. 521. The mean pressure for the year at station level was 29ins. 842 as against 29 847 in 1918, and 29ins. 844 for the past 36 years. The highest pressure was 30s.398 on February 4th as against 30391 in 1918 and 30 509 for the past 36 years. The lowest pressure was 29ins 287 on August 26th as against 29ins.-108 in 1918 and 281-735 for the past 36 years.
The temperature of the air was considerably above normal in March and April, and moderately above in June. It was moderately below in February, October, November, and December. The mean
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