热带太平洋表面水中CO2对El Niño事件响应的数值模拟

NUMERICAL SIMULATION OF THE RESPONSE OF CO2 IN SURFACE WATER OF TROPICAL PACIFIC TO EL NIñO EVENTS

中文关键词:  CO₂  El Niño  数值模拟  La Nina

英文关键词:CO₂  El Niño  Numerical simulation  La Nina

中文摘要:

      文中用一个带生物泵的三维全球海洋碳循环模式模拟了热带太平洋表面水中CO₂总量(T_CO2)在El Niño和La Nina事件期间的变化。试验结果表明,西北太平洋(0～20°N,120～150°E)和赤道中东太平洋(10°S～10°N,150°E～90°W)两个海区在El Niño事件期间表面水T_CO2和海气分压差(ΔP_CO2)的变化十分显著。El Niño期间,西北太平洋T_CO2和ΔP_CO2都增加;赤道中东太平洋T_CO2和ΔP_CO2都减少;La Nina期间,它们的变化与El Niño期间相反。模拟的El Niño期间热带太平洋表面水中T_CO2和ΔP_CO2的变化趋势与观测事实吻合得较好。

英文摘要:

      The changes of total dissolved CO₂ in surface water in tropical Pacific (10°S-20°N, 120°E-90°W) during El Niño and La Nina events have been numerically simulated using a three-dimensional global ocean carbon cycle model with biot a pump. The simulated results show that the changes of total dissolved CO₂(T_CO2) and partial pressure difference between sea and air(P_CO2) in northwest Pacific(0-20°N, 120-150°E) and in central and east equatorical Pacific(10°S-10°N, 150°E-90°W) were not iceable. During El Niño events, T_CO2 and P_CO2 were increased in northwest Pacific and decreased in central and east Pacific; There were opposite changes in both regions during La Nina events. The simulated change trends of T_CO2 and P_CO2 are consistent with observations.