F 3
The mean monthly results of comparisons with the records of the Beckley Anemograph from 1910-1928 are given in the following table, together with the results for 1929:-
Factor for converting the actual run of the Beckley Anemograph cups to velocities recorded by the Dines Pressure Tube Anemograph.
Month Mean 1910-1928 1929 January 1.94 2.13 February 1.99 2.11 March 2.06 2.13 April 2.08 2.19 May 2.19 2.25 June 2.21 2.29 July 2.23 2.38 August 2.21 2.55 September 2.20 2.36 October 2.12 2.25 November 2.02 2.20 December 1.94 2.14 Year 2.09 2.25III. 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 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 and the amount of sunshine by two Campbell-Stokes universal sunshine recorders. Eye observations of barometric pressure, temperature of the air and of evaporation and the amount of cloud are made at each hour of Hong Kong Standard Time. The character and direction of motion of the clouds are observed every three hours. Daily readings are taken of self-registering maximum and minimum thermometers. Observations of pilot balloons are made in clear weather with a Watts 1 inch "Coudé" theodolite. It is proposed to send up a small balloon daily, when the balloons arrive, in order to study the winds in the lower strata of the atmosphere.
Principal features of the Weather in 1929:-The principal features of the weather in 1929 were:
(a) A severe typhoon on August 22.
(b) Continuation of the serious shortage of rain (which began in July, 1928) until the middle of June.
(c) Temperature of the air considerably above normal in January and moderately above from March to June.
F 3
The mean monthly results of comparisons with the records of the Beckley Anemograph from 1910-1928 are given in the following table, together with the results for 1929:-
Factor for converting the actual run of the Beckley Anemograph cups to velocities recorded by the Dines Pressure Tube Anemograph.
Factor (Dines → Beckley
3
Month.
Mean 1910-1928.
1929.
January,
I'94
2.13
February,
199
2.II
March,
2:06
2.13
April,...
2.08
2.19
May,
2:19
2.25
June,
2 [!
2.29
July,
2.23
2.38
August,
2.21
2.55
September,
2.20
2.36
October,......
2.12
2.25
November,
2.02
2.20
·
December,.
1.94
='14
Year...
2.09
2.25
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 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 and the amount of sunshine by two Campbell-Stokes universal sunshine recorders. Eye observations of barometric pressure, temperature of the air and of evaporation and the amount of cloud are made at each hour of Hong Kong Standard Time. The character and direc- tion of motion of the clouds are observed every three hours. Daily readings are taken of self-registering maximum and minimum thermometers. Observations of pilot balloons are made in clear weather with a Watts 1 inch "Coudé" theodolite. It is proposed to send up a small balloon daily, when the balloons arrive, in order to study the winds in the lower strata of the atmosphere.
Principal features of the Weather in 1929:-The principal features of the weather in 1929 were:
(a) A severe typhoon on August 22.
(b) Continuation of the serious shortage of rain (which
began in July, 1928) until the middle of June. (c) Temperature of the air considerably above normal in January and moderately above from March to June.
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