Meteorological Observations at Syowa in 1973 by the 14th Japanese Antarctic Research Expedition

• Main Authors: Tukasa KOZUMA, Hiroshi JOBASHI, Tadayoshi NAKAMURA
• Format: Article in Journal/Newspaper
• Language: English; Japanese
• Published: National Institute of Polar Research 1974
• Subjects: Geography (General); G1-922; Antarctic; Syowa Station; Mawson Station; Antarc*
• Online Access: https://doi.org/10.15094/00007776; https://doaj.org/article/35b8f22c7a614771a43fe61c0fdec5a2

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.