苏筠1,2,,
1. 北京师范大学环境演变与自然灾害教育部重点实验室, 北京 100875
2. 北京师范大学地理科学学部, 北京 100875
基金项目: 国家重点基础研究发展计划项目（批准号：2018YFA0605602）和国家自然科学基金项目（批准号：41771572）共同资助
详细信息
作者简介: 陈思颖, 女, 24岁, 硕士研究生, 自然地理学专业, E-mail:201821051030@mail.bnu.edu.cn
通讯作者: 苏筠, E-mail:suyun@bnu.edu.cn
中图分类号: P467收稿日期:2019-12-03
修回日期:2020-03-20
刊出日期:2020-09-30
The severe winter of 1308/1309 in the Taihu Lake Basin recorded in Yunshan Diary
Chen Siying1,2,,Su Yun1,2,,
1. Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875
2. Faculty of Geographical Science, Beijing Normal University, Beijing 100875
More Information
Corresponding author: Su Yun,E-mail:suyun@bnu.edu.cn
MSC: P467--> Received Date: 03 December 2019
Revised Date: 20 March 2020
Publish Date: 30 September 2020
摘要
摘要:古代私人笔记和日记是用于气候变化研究的重要历史资料。根据元人郭畀《云山日记》记载的1308~1309年的逐日天气记录、物候记录，发现该年冬季太湖流域地区异常偏冷，至少可以识别出4次明显的寒潮过程。1309年1月江南运河丹阳段封冻3日，镇江地区的最低气温可能达-13℃以下；1309年2月常州-镇江地区连续降雪8天，积雪10天，积雪深度可掩埋道路。此外，日记中记载的柑橘分布范围与13世纪中叶相比已明显南移。据此，可以认为至少在14世纪初气候已经开始向寒冷方向转变，体现了由中世纪暖期向明清小冰期的过渡过程。
关键词: 日记/
寒冬/
极端气候事件/
气候变化/
中世纪暖期/
明清小冰期
Abstract:The private diary is one kind of the most important materials used in studying climate change in the historical period. Compared to other historical documents, diaries are advantageous in high temporal resolution and high reliability. Yunshan Diary, written by Guo Bi in the Yuan Dynasty, records his work and life experience day by day from September 12 1308 to December 2 1309. The records relating to weather and climate in this diary were extracted, including daily weather records, phenology records and species distribution records. Based on them, the climatic characteristics of Taihu Lake Basin in the year of 1308/1309 are analyzed. Taihu Lake Basin roughly covers southern Jiangsu Province, Shanghai City, and northern Zhejiang Province. As a result, the winter of 1308/1309 is proved to be abnormally cold over Taihu Lake Basin, which may have a certain similarity with modern extremely cold years. Based on the daily weather records, at least four cold waves can be identified from December 1308 to February 1309. In January 1309, Jiangnan Canal was completely frozen for at least 3 days, which indicates that the minimum temperature might fall below-13℃. In February 1309, snowfall continued for 8 days and snow cover continued for 10 days in Changzhou-Zhenjiang area, and the snow cover is deep enough to bury the road. All of the cold events above are rare in this region. According to the phenology record, the first snow in Huzhou in the winter of 1308/1309 occurred on December 14 1308, which is 17 days earlier than the modern average first-snow date. On a multi-decadal scale, the citrus distribution range recorded in the Yunshan Diary had shifted significantly southward compared with that in the middle of the 13th century. Therefore, it can be considered that in the early 14th century at the latest, the climate in Eastern China had begun to turn cold. This reflects the transition from the Medieval Warm Period to the Little Ice Age.
Key words:diary/
cold winter/
extreme climatic event/
climate change/
Medieval Warm Period/
Little Ice Age
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