TY - JOUR A1 - Letscher, R. T. A1 - Villareal, T. A. T1 - Evaluation of the seasonal formation of subsurface negative preformed nitrate anomalies in the subtropical North Pacific and North Atlantic JO - Biogeosciences J1 - BG VL - 15 IS - 21 SP - 6461 EP - 6480 Y1 - 2018/11/02 PB - Copernicus Publications SN - 1726-4189 UR - https://bg.copernicus.org/articles/15/6461/2018/ L1 - https://bg.copernicus.org/articles/15/6461/2018/bg-15-6461-2018.pdf DO - 10.5194/bg-15-6461-2018 ER -