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Variability of biothermal conditions in the vicinity of the Polish Antarctic station in the South Shetlands, West Antarctica
Polar Research ( IF 1.9 ) Pub Date : 2023-08-22 , DOI: 10.33265/polar.v42.9108
Joanna Plenzler , Katarzyna Piotrowicz , Weronika Rymer , Tomasz Budzik

There are nine year-round and 11 seasonal scientific stations in the South Shetland Islands, an area often visited by cruise ships and sailing yachts. Although this is the warmest part of Antarctica, the weather conditions may be demanding for humans. We analysed the variability of biothermal conditions near Henryk Arctowski Station Polish Antarctic Station, on King George Island, during the period 2013–2021, using the wind chill index (WCI), which combines air temperature and wind speed, to determine thermal sensation. WCI values were interpreted using two cold sensation categorisations. Hourly WCI values were assigned to thermal sensation classes that ranged from “comfortable” to “frosty.” The most favourable biothermal conditions occurred from December to February. The “cold” sensation was dominant in all months, its average occurrence frequency ranging from 56.4% (in January) to 84.4% (in July). From November to March, there was no risk of frostbite to uncovered body parts. Such conditions occurred only from April to October, with a frequency of 0.2–6.8%; biothermal conditions were also the most variable in this period. Maximal WCI hourly values show that dangerous weather conditions may occur throughout the day in June and for most of the day from July to September. An abrupt change in biothermal conditions was more often caused by wind speed change than by air temperature change. The most marked WCI changes occurred from April to September, on average five times per year. Our results indicate that biothermal conditions in the vicinity of Arctowski Station are predominantly favourable for outdoor work only if a person wears proper winter clothing.



中文翻译:

西南极洲南设得兰群岛波兰南极站附近生物热条件的变化

南设得兰群岛有 9 个全年科学站和 11 个季节性科学站,是游轮和帆船经常光顾的地区。尽管这里是南极洲最温暖的地区,但天气条件对人类来说可能要求很高。我们分析了 2013 年至 2021 年期间乔治王岛亨利克·阿克托夫斯基站波兰南极站附近生物热条件的变化,使用风寒指数 (WCI)(结合气温和风速)来确定热感觉。WCI 值使用两种冷感分类来解释。每小时的 WCI 值被分配给热感觉类别,范围从“舒适”到“寒冷”。最有利的生物热条件发生在十二月至二月。“寒冷”的感觉在所有月份中都占主导地位,其平均发生频率为56.4%(1月份)至84.4%(7月份)。从11月到3月,裸露的身体部位不存在冻伤风险。此类情况仅发生在4月至10月,发生频率为0.2%~6.8%;这一时期的生物热条件也是变化最大的。WCI 每小时最大值显示,6 月全天以及 7 月至 9 月的大部分时间可能会出现危险的天气条件。生物热条件的突然变化更多地是由风速变化引起的,而不是由气温变化引起的。最显着的 WCI 变化发生在 4 月至 9 月,平均每年五次。我们的结果表明,只有当人们穿着合适的冬季服装时,Arctowski 站附近的生物热条件才非常有利于户外工作。

更新日期:2023-08-22
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