The Biological Carbon Pump in the Subtropical North Pacific Ocean: Mechanisms of Nutrient Supply

摘要-9906922亚热带环流占据了世界海洋的很大一部分，直到最近，普遍的看法是，这些巨大的营养物质枯竭的地区只支持少量的初级生产力。 然而，这种观点正在改变，这些领域的生产似乎很重要。 因此，重要的是要了解营养物质供应到这些地区的机制。 为此，该项目将寻求改善对营养物质向透光层输送机制的估计，并更好地限制碳泵的大小。 该提案的三个主要内容是改进HOT系泊上氧气和N2的连续测量，DOP（溶解有机磷）和DON（溶解有机氮）的机会船测量，以及氖的测量，以澄清O2预算中气泡引起的气体交换机制。 我们的目标是确定定量的重要性，administration diapycnal和表面运输的磷，并提高质量平衡估计净生物产氧量。

ABSTRACTOCE-9906922The subtropical gyres occupy a large fraction of the world ocean and until recently, the common view was that these vast nutrient-depleted regions support only a small amount of primary productivity. However, this view is changing and it appears that production in these areas is important. Thus it is important to understand the mechanism by which nutrients are supplied to these areas. To this end, this project will seek to improve estimates of the mechanisms of nutrient transport to the euphotic zone, and also better constrain the magnitude of the carbon pump. The three main elements of this proposal are improvment in the continuous measurements of oxygen and N2 on the HOT mooring, ship-of-opportunity measurements of DOP (dissolved organic phosphorus) and DON (dissolved organic nitrogen), and measurements of neon to clarify the mechanism of bubble-induced gas exchange in the O2 budget. The goal is to determine the quantitative importance of intermittment diapycnal and surface transport of phosphorus, and to improve mass balance estimates of net biological oxygen production.