摘要
利用4种海-气界面气体传输速率公式对比研究了北太平洋气体传输速率及其CO2通量的季节变化特征。与单纯依赖风速的算法相比,考虑波浪影响的气体传输速率和CO2通量在空间分布和季节变化上具有明显差异。在低纬度地区(0°～30°N),波浪参数使气体传输速率下降,海洋对大气CO2的吸收减少,而在30°N以北范围内则出现新的气体传输速率高值区,海洋对大气的吸收增加。进一步研究了黑潮延伸体区域的气候态月平均气体传输速率和CO2通量。结果表明,该区域气体传输速率和CO2通量最大值分别出现于冬季和春季,引入波浪参数后,虽然该区域气体传输速率和CO2通量平均值没有明显差异,但季节变化强度显著增强。
Gas transfer velocity of CO2 on the air-sea interface over North Pacific has been constructed using four bulk formulas, and the seasonal variation of gas transfer velocity and CO2 flux are studied. Compared with wind speed dependent parameterizations, the wave-derived formulas result in different seasonal pattern of transfer veloci- ty and CO2 flux. In tropical and sub-tropical zone （0°-30°N）, the wave-dependent formulas show weaker gas transfer velocity and less air to sea CO2 flux. In the northern area （30°-50°N）, wave-dependent formulas enhance gas transfer velocity and result in larger CO2 flux from air to sea. Furthermore, climatological monthly mean gas transfer velocity and the CO2 flux in Kuroshio Extension are calculated. The results reveal that gas transfer velocity and CO2 flux reach maximum in winter and spring respectively. The differences among four bulk formulas on the mean gas transfer velocity and CO2 flux in Kuroshio Extrension are not significant, but the wave parameterization causes stronger seasonal variance.
出处
《海洋学报》
CAS
CSCD
北大核心
2013年第4期52-63,共12页
基金
国家自然科学基金项目(91128204
41106019)
国家博士后基金项目(20100481449)
国家海洋局第二海洋研究所基本科研业务费专项资助项目(GT1205)
