Multi‐decadal trends in the advection and mixing of natural carbon in the Southern Ocean
Multi‐decadal trends in the advection and mixing of natural carbon in the Southern Ocean
复制标题
南大洋天然碳平流和混合的多年趋势
DOI：
10.1029/2012gl054483
复制
发表时间：
2013
影响因子：
5.2
通讯作者：
K. Lindsay
中科院分区：
文献类型：
--
作者：
N. Lovenduski;M. Long;P. Gent;K. Lindsay
利用一个非涡动分辨海洋模式的后报模拟结果，研究了南大洋天然二氧化碳（CO2）的平流、混合和海气通量的多年代际趋势。特别强调的是，该模型的改进涡诱导平流参数化。从1958年到2007年，该模型预测，南大洋天然CO2的释气量将显著增加，这与这一时期风速的积极趋势一致。自然CO2通量趋势在很大程度上是由增强的欧拉平均平流和溶解无机碳（DIC）到南大洋表面的横隔混合驱动的。自然CO2通量趋势将更大，如果不是由于南大洋表面DIC的涡动诱导平流的增加，这是由模型的涡动诱导平流系数的数十年增加引起的。
Multi‐decadal trends in the advection, mixing, and air‐sea flux of natural carbon dioxide (CO2) in the Southern Ocean are investigated using output from a hindcast simulation of a non‐eddy‐resolving ocean model. Particular emphasis is placed on the model's improved eddy‐induced advection parameterization. From 1958 to 2007, the model predicts a significant increase in the outgassing of natural CO2 from the Southern Ocean, congruent with a positive trend in the wind speed over this period. The natural CO2 flux trend is largely driven by enhanced Eulerian‐mean advection and diapycnal mixing of dissolved inorganic carbon (DIC) into the Southern Ocean surface. The natural CO2 flux trend would be larger, if not for an increase in the eddy‐induced advection of DIC out of the Southern Ocean surface, caused by the multi‐decadal increase in the model's eddy‐induced advection coefficient.