Increased nitrate and decreased δ15N-NO3- in the Greenland Arctic ater 1940 attributed to North American oil burning

Chellman, N. J., Hastings, M. G., McConnell, J. R. (2016). Increased nitrate and decreased δ15N-NO3- in the Greenland Arctic ater 1940 attributed to North American oil burning, The Cryosphere Discuss., 10.5194/tc-2016-163