第14次南極地域観測隊気象部門報告1973

概要

論文の詳細を見る
This paper describes the results of meteorological surface and aerological observations at Syowa Station from February 10, 1973 to January 31, 1974. The main subjects of observations, the method, and the equipments are the same as the previous year. Observed results were regularly sent to World Meteorological Centre in Melbourne via Mawson Station. Some meteorological characteristics of this year are as follows: 1) A long spell of blizzard in the first decade of April had daily maximum wind speeds exceeding 20 m/s recorded every day for 10 consecutive days. 2) On the early morning of 12 May, air temperature rose up to 1.4℃. This was the highest record for May since observation started at Syowa Station. 3) Gold weather in July and August brought monthly mean temperatures for July and August to the lowest ever observed at Syowa Station. 4) The rate of actual sunshine duration to the possible sunshine in November was 71%. This value was the largest number for this month at Syowa Station. 5) Sudden warming in the lower stratosphere was observed quasiperiodicaly from early September. A temperature rise in the warming period from 30 October to 6 November was about 30℃ at 30 mb pressure level.