摘要
用海洋生物化学环流模式（Ｂ－ ＧＣＭ） 模拟了工业化前碳及营养物在海洋中的分布， 并得到了较为合理的结果。模式考虑了海洋表面化学和一个简单的生物过程。模式的主要预报变量有总ＣＯ２ 、碱度和磷酸盐。决定生物化学物质分布的三个参数的取值为： ＰＯＣ 通量的垂直廓线的指数ａ 取观测值０－８５８ 、生物生产效率ｒ ＝ ２／ 年和下落比Ｒ＝ ０－０６ 。用Ｂ－ＧＣＭ 模拟出的结果与ＧＥＯＳＥＣＳ观测值基本相符。
A three-dimensional ocean carbon cycle model, which is a general circulation model coupled with simple biogeochemical processes, is developed. The OGCM used is a modified version of the Geophysical Fluid Dynamics Laboratory modular ocean model (MOM2). The ocean chemistry and a simple ocean biota model is included. Principal variables are total CO 2 , alkalinity and phosphate. The vertical profile of POC flux observed by sediment traps is adopted, the rain ratio, a ratio of production rate of calcite against that of POC, and the bio-production efficiency should be 0.06 and 2 per year, separately. Model distributions of chemical species compared with distributions observed during the GEOSECS are well reproduced.
出处
《气候与环境研究》
CSCD
1999年第4期375-387,共13页
Climatic and Environmental Research
关键词
碳循环
生物泵
营养物分布
海洋化学
carbon cycle biological pump distribution of nutrient ocean chemistry
