National Oceanic and
Atmospheric Administration
United States Department of Commerce


dramatic increase in anthropogenic emissions of reactive nitrogen from northeastern Asia and the subsequent deposition over the open North Pacific Ocean (NPO), obtained from reconstructions of the recent history of the excess of N (N*) relative to phosphate (P) in the NPO using nutrient observations from the upper ocean and information about the time passed since the water parcel last contacted the atmosphere, using CFC-12 derived age data.