✨ Meteorological Observations
104
RESULTS OF METEOROLOGICAL OBSERVATIONS,
Taken at the Government Station, Martendale, Southland, during the month of September, 1866. Lat. 46° 17' S; Lon. 166° 20' E. Elevation, 79ft.
Barometer, reduced to 32 deg., and sea-level
Inches.
Greatest atmospheric pressure (on 2nd and 23rd)
30.268
Least ... (on 8th)
29.017
Mean ...
29.788
Range of ...
1.251
Thermometer in shade
Degrees.
Highest day temperature (on 2nd)
73.0
Lowest night temperature (on 25th)
25.2
Mean temperature of the air
47.4
Total range of temperature in month
47.8
Greatest daily range of temperature (on 16th)
36.3
... (on 21st)
7.8
Least ...
22.5
Mean ...
Radiation Thermometer
Degrees.
Maximum solar radiation
105.0
Minimum terrestrial radiation
20.8
Hygrometer
Mean temperature of evaporation
42.4
... dew-point
36.8
... degree of humidity (saturation=1.00)
.67
... tension of aqueous vapor
.225
Rainfall
Inches.
Number of days on which rain fell
5
Total rainfall on ground
1.532
Greatest daily rainfall (on 21st)
.583
Evaporation
Inches.
Total amount of evaporation on ground
3.361
Cloud
Mean amount of cloud (overcast=10.0)
3.3
Force of wind
Miles.
Total horizontal movement of air in month
4048
Greatest daily movement (on 8th)
507
Least ... (on 16th)
29
Mean ...
134
Greatest velocity, per hour (on 8th)
40
Greatest pressure, per square foot (On 8th, 7.2 lbs.)
Mean force (Admiralty Standard, 0—12)
4.1
Direction of Wind
N., 9 days; N.E., 1 day; E., 9 days; S.E., 5 days; S., 0; S.W., 0; W., 2 days; N.W., 4 days.
Remarks
A fine dry month, very warm at commencement, and until 20th, when a thunder-storm occurred, and subsequently the weather was cold, with strong easterly winds, and sharp night frosts. The mean daily temperature decreased from 60.4 deg. on the 2nd to 37.7 deg. on the 22nd. The thermometer fell below the freezing-point on no fewer than thirteen days in the month, and vegetation was materially checked towards the close. It was unusually advanced at the commencement.
Next Page →
Online Sources for this page:
✨ LLM interpretation of page content
🎓
Meteorological Observations for September 1866
Domain 🎓 Education, Culture & Science
Keywords Weather, Climate, Temperature, Rainfall, Wind, Southland