@inproceedings{CTT100813708, author = {Shohei Hattori and Asuka Tsuruta and Yoshinori Iizuka and Koji Fujita and Ryu Uemura and Sumito Matoba and Naohiro Yoshida}, title = {Nitrogen isotope of nitrate in Arctic ice core records past anthropogenic energy shift}, booktitle = {}, year = 2018, }