An ocean biogeochemistry model was developed and incorporated into a global ocean general circulation model (LICOM) to form an ocean biogeochemistry general circulation model (OBGCM).The model was used to study the natural carbon cycle and the uptake and storage of anthropogenic CO2 in the ocean.A global export production of 12.5 Pg C yr-1 was obtained.The model estimated that in the pre-industrial era the global equatorial region within ±15° of the equator released 0.97 Pg C yr-1 to the atmosphere,which was balanced by the gain of CO2 in other regions.The post-industrial air-sea CO2 flux indicated the oceanic uptake of CO2 emitted by human activities.An increase of 20-50 μmol kg-1 for surface dissolved inorganic carbon (DIC) concentrations in the 1990s relative to pre-industrial times was obtained in the simulation,which was consistent with data-based estimates.The model generated a total anthropogenic carbon inventory of 105 Pg C as of 1994,which was within the range of estimates by other researchers.Various transports of both natural and anthropogenic DIC as well as labile dissolved organic carbon (LDOC)were estimated from the simulation.It was realized that the Southern Ocean and the high-latitude region of the North Pacific are important export regions where accumulative air-sea CO2 fluxes are larger than the DIC inventory,whereas the subtropical regions are acceptance regions.The interhemispheric transport of total natural carbon (DIC+LDOC) was found to be northward (0.11 Pg C yr-1),which was just balanced by the gain of carbon from the atmosphere in the Southern Hemisphere.
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机译:建立了海洋生物地球化学模型并将其整合到全球海洋总循环模型(LICOM)中,形成了海洋生物地球化学总循环模型(OBGCM),该模型用于研究自然碳循环以及人为CO2在大气中的吸收和储存。海洋获得了12.5 Pg C yr-1的全球出口产量。该模型估计,在工业化前时代,赤道±15°以内的全球赤道区域向大气释放了0.97 Pg C yr-1。工业后的海-海CO2通量表明了人类活动排放的海洋中的CO2吸收量,地表溶解的无机碳(DIC)浓度增加了20-50μmolkg-1。在模拟中获得了1990年代相对于工业化前时期的数据,这与基于数据的估计是一致的。该模型产生的人为碳总清单自1994年起为105 Pg C,在估计范围之内。通过模拟估算了自然和人为DIC的各种运输以及不稳定的溶解性有机碳(LDOC),人们认识到南大洋和北太平洋的高纬度地区是重要的出口地区空气-海洋CO2通量大于DIC清单,而亚热带地区是接受区域。发现总天然碳(DIC + LDOC)的半球向北迁移(0.11 Pg C yr-1)是平衡的来自南半球大气中的碳的吸收。
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