Letter | Published:

Diurnal Variation of Temperature in the Free Atmosphere

Nature volume 81, page 6 (01 July 1909) | Download Citation

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Abstract

THE following results, which I have recently obtained by a discussion of temperatures obtained in kite and captive balloon ascents, may be of interest in connection with Prof. Clayton's letter (NATURE, February 4) and Mr. Dines's remark that at a height of 1 km. the daily temperature variation becomes insignificant (NATURE, June 17). The daily variation of temperature at a height of 1 km. over Berlin, deduced from 2232 observations made during the five years 1903–7, is given in degrees C. by T = T3 - (4.4.40 ± 0.08) + (0.87 ± 0.13) sin (nt2) + (0.14 ± 0.10) sin (2nt2), where T3 is the mean surface temperature, and the probable errors are deduced by the method of least squares. The most probable values for θ1, θ2, are 197° and 123° respectively, the time being measured from midnight.

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  1. Cambridge, June 20.

    • E. GOLD

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https://doi.org/10.1038/081006a0

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