Observations on the climate of Penzance and the district of the Land's End in Cornwall / by John Forbes.

Date:
1821
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the climate of Penzance and the district of the Land's End in Cornwall / by John Forbes. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    the thermometer, that is, the mean of the greatest variations of each month for the 14 years, has been 21 °. The following is the monthly and daily range for the different seasons; and also the mean variation of successive days at the same hour:— Winter. Spring. Sumner. Ant nun. Monthly range - - - - - 22® 24“ 20® 10® Daily range ------ 8® 15® 16® 14® Mean of the greatest varia-\ lions ol successive days J 11.41® 0.5® 5.4® 7.6° Mean variation ol success- \ ive days - - - - / 3.77® 2.07® 1.72® 2.28® The annual mean of the greatest variations of suc- cessive days for each month, at the same hour, viz. 7 and 8 a. m., is 8.64; and the mean variation of successive days is 2.68®. In regard to the comparative temperature of the different seasons and months, it appears that this is equally indicative of the uncommon equability of the climate of this place. The greatest variation between the mean tempe- rature of any two successive months is 70; while the mean variation of successive months is only 3.5°, or, calculating from the morning observation, 3.33 °. The following is the statement of this mean monthly variation for the different seasons:— Winter. Spring, Summer. Autumn, By the morning observation - 3.06° 2° 4.60® 3® mean of morn. Sc altera. 4® 2.66® 4.00® 3.38° —mora.aftcrn.6c oven. 4° 2.66® 4.33° 3°