S2A3 Biographical Database of Southern African Science

Giles, Miss M (meteorological observation)

Born: Date not known, Place not known.
Died: Date not known, Place not known.

Miss M. Giles resided at Mahalapye, Botswana, where she collected meteorological observations for many years. A summary of her observations was published by A.H. Wallis* in Meteorological observations: Mahalapye; from the records of Miss M. Giles, 1917-1943 (Cape Town, 1943, 11 p). The pamphlet contained tables of monthly means of air temperature, humidity of the atmosphere, and rainfall for each month during the period 1912-1942.

During February and March 1923 Miss Giles regularly observed antisolar rays at Mahalapye - shadow bands cast across the sky by irregularities of the western horizon immediately after sunset, which appear to converge at a point on the eastern horizon opposite the sun. She wrote a description of the rays for Wallis, which he included in his note on "Anti-solar rays" published in The Meteorological Magazine (June 1923, Vol. 58, pp. 105-106).

List of sources:

Bibliography of regional meteorological literature, Vol. 1. Southern Africa, 1486-1948 (compiled by R.J. Venter). Pretoria: Weather Bureau, 1949.

Wallis, A.H. Anti-solar rays. Meteorological Magazine, June 1923, Vol. 58, pp. 105-106.

Compiled by: C. Plug