Global warming and urbanization affect springwater temperatures in Tokyo, Japan

8th International Symposium of the Digital Earth

地球科学;计算机科学

Matsuyama, H.^1

Department of Geography, Tokyo Metropolitan University, Tokyo 192-0397, Japan^1

关键词: Air temperature;    Dry seasons;    Field surveys;    Rainy seasons;    Tokyo , Japan;    Water temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/18/1/012102/pdf
DOI  :  10.1088/1755-1315/18/1/012102

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Due to global warming and urbanization, air temperature in Tokyo has risen 1.6 degrees in the past 30-40 years which has also affected springwater temperatures. From 2005, we have proceeded with the observations of springs in Tokyo metropolis, Japan which had been conducted by Environment of Tokyo from the end of the 1980s to 2001. In the rainy season (October) and dry season (February), we have observed springwater temperatures in 25 springs. The field surveys have revealed that most springwater temperatures has steadly risen in the past 30 years. As of February 2013, water temperatures of 19/11 springs have risen with 5% level in the rainy/dry season. As of February 2006, water temperatures of 10/13 springs have risen with 5% level in the rainy/dry season, i.e., 9/2 springs have acquired/lost the significance as of February 2013. One possible reason is the recent hot summer/cold winter in Tokyo.