Station Royal Observatory, Hongkong

Height above M.S.L. 109 ft.

1916.

Month of September.

Long. 7 36 41′ 8 E.

Lat. 22° 18′ 13.2″ N.

Barometer at M.S.L. reduced to gravity at latitude 45°.

Daily Meteorological Observations — September 1916

Summary

Sums. Means

Barometer: 29.750, 29.749, 29.767

Air Temperature: 78.5, 82.9, 79.9, 84.7, 76.6

Vapour Tension: 0.816

Relative Humidity: 78

Wind velocities (mph): 8.7, 12.2, 8.9, 18.4, 8.4, 14.9, 6.3

Cloud (0–10): 14.9

Total Rainfall: 10.520 in.

In reducing the Barometer to gravity at latitude 45° a constant correction of −0·055 inch has been applied.

(Zb 10)

Station Royal Observatory, Hongkong.

Height above M.S.L. 109 ft.

1916.

Month of September.

Long, 7 36 41′ 8 E.

Lut. 22° 18′ 13′2′′ N.

Barometer at M.S.L. und

Day.

reduced to gravity at

latitude 45°.

Air Temperature.

Tension of

Vapour.

Relative

Hamidity.

Wind.

Direction and Force.

Amount of

Cloud.

ļ

Rainfall.

Remarks.

1. 7.

1 p.

9 p.

7 a.

1 թ.

Max.

Min.

9 p.

Daily Daily Means. Means.

Daily

7 2.

I p.

9 p.

Means.

[

Dir. Vel. Dir. | Vel. Dir. |Vel. |(0-10).] points .p.h, puints. m.p.l. points. m.p.h.

ins.

Sept. ins

ins.

D

in.

P

2

1

T

29.883

29.882

29.886

80.2

84.1

80.8

87.4

77.6

0.892

83

10 9

2

2.3

Haze, Dew.

2

.847

.831

.798

80.5

84-3

80.6

86.6

78.0

,886

8z

7

9

13

1 I

3 1.9

Dew.

3

753

739

713

79-3

81.6

80.6

86.6

77.6

.889

83

7

6

10

3

2.9

0.170

Dew.

.673

.661

.640

79.6

86.6

82.6

89.1

77.6

.885

79

Z4

IO

22

3

2.7

Slight fog.

.624

.621

.613

813

86.6

82.8

89.8

79.4

.916

3

21

80

9

5.9

0.115

.584

.561

.541

81.8

82.9

80.9

84.4

76.0

.798

74

3

I I

5

22

6

43

9.0

0.700

Slight fog, Thunderstorms. Lightning.

.570

.649

.750

76.7

79.9

76.5

81.3

75-5

.811

+1

12

35

12

19

10.0

0.835

.780

.823

.871

77.6

82.9

79.7

83.7

77-5

.873

85

10

21

J[

22 10

8.7

0.035

9

.844

.850

.857

79.0

83.7

78.7

85.7

77.0

.853

IO $1

7

9 7

16

2

2.8

10

.828

.803

.814

77.0

85.0

80.1

87.0

75.2

.827

+8

24

10

14

2

0.7

[ ]

.806

.804

.832

78.5

85.6

79.5

87.2

77.1

.892

84

10 TO

4

2.9

12

.871

.858

.849

78.7

85.7

81.4

87.5

77.0

.867

81

10

8 9

15

6.4

0.030

13

.842

.842

.833

75-7

79.6

79.7

82.2

75.6

.898

14

.814

.803

.825

78.9

82.8

79-7

84.0

78.1

.888

15

.806

.83z

.851

79-5

83.2

80.7

84.8

77.1

.825

16

.834 .824

.817

80.0

84.8

82.5 85.5

79-3

.784

17 -785 .783

.814

78.8

80.8

80.0

83.8

77.0

.832

18

-776

.768

.766

79.0

83-2

80.8

84.6

76.5

.792

19

-726

734

-747

78.4

80.7

79.3

81.7

74.9

.825

20

-713

.730

-727

80.7

80.9

$0.6

81.6

78.6

.861

21

-728

.708

77.3

82.7

79.4 84.6

76.6

.890

22

.728

700

.727

78.3

85.7

81.4

87.4

76.9

.905

23

-745

.746

.794

81.9

86.8

77-7

88.0

76,0

.708

24

-737

.704

.705

74.4

81.0

79.6 84.2

73.7

442

25

.617

.582

.599

76.9

82.9

79.3 84.4 76.6

-552

ON 16:00

** KNX 1050 50 00 00 F

89

17

10

74

84

13

60 +

96 128 om!

23

12

10

28

Iz

28

00 00 00 00 00 000 10 0

#20

IO

9.7

1.255

9 17

9

3

6.8

9

13

10

7.8

30

7 20

6.6

28 10

18

8.0

0.735

Dew.

Slight for, Now, Lunar hato, Lunar Corona,

Lightning. Lunar bale, Slit ht fog, Lightning. Lunar halo, Thunderstorms. Solar halo, Lunar hale, Lightning.

Solar halo, Lunar balo, Dew, Thunderstorms.

Solar halo, unar halo, Lightning.

Rainbow, Lightning.

19

8

20

6.2

0.295

Lightning.

8

21

9

18

9.7

0.700

8

27

28

10.0

0.865

3

7.0

0.575

Solar halo,

1

23

19 2

2.8

***

64

2

27

+00

32

14

3-7

Haze, Dew, Thunderstorms. Lightning.

17

5.4

++

54

32

14

32 20

8.8

26

.564

555

.619

73-5

80.7

*8.9

81.6

72.6

.766

Bo

27

.637

.66z

.726 79.2

81.7

76.z

82.6

74.1

.847

85

28

.738

.764

.Sog

76.7

79.8

78.8

81.2

75.1

.8oz

82

29

.816

813

.84+ 77.2

79.9

79.5

814

76.9

-745

75

30 .850 .864 .908 77.9

80.4

79.6

81.7

77.9

715

71

NON CON

7

38 7 43

1.120

9

33

7 36

10.0

2.750

29

32 7 16

8.5

0.335

14

23

26 5.1

7

26

24

5.6

0.005

...

:..

་...

Suins.

Means 29.750 29.749 29.767 78.5

82.9

79-9

84.7 76.6

0.816 78

8.7 12.2 8.9 18.4 8.4 14.9 6.3

10.520

In reducing the Barometer to gravity at latitude 45o a constant correction of −0·055 inch has been applied.

( Zb 10 )