Collaborative Research: Biogeochemical Controls of Post-Glacial Carbon Cycle and Rise in Atmospheric Carbon Dioxide

合作研究：冰期后碳循环和大气二氧化碳上升的生物地球化学控制

• 批准号: 0080878
• 负责人: Fred Mackenzie
• 金额: $ 15.96万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080878&HistoricalAwards=false
• 关键词: Collaborative; Research; Biogeochemical; Controls; Post

This award is for support of a study of the post-glacial carbon cycle as a non-steady state system, where carbon includes the two stable isotopes 12C and 13C, coupled to the nutrient cycles of nitrogen (N) and phosphorus (P), in the four major domains of the Earth's surface system: land, atmosphere, coastal zone, and open ocean (including the sediments of these latter two domains). The project is a collaborative one between the University of Hawaii (Mackenzie) and Northwestern University (Lerman). The work will be based on the modeling approach that the principal investigators developed and used with some success in the study of the coupled carbon-nitrogen-phosphorus-sulfur cycles in the past 300 years, when the system was subjected to human environmental forcings and a rise in temperature. A new model of the four domains and coupled C-N-P biogeochemical cycles for the analysis of the longer period since the LGM (last glacial maximum) to the start of the Industrial Age will include past changes and spatial distributions of 13C (effectively separating the carbon cycle into the 12C and 13C cycles), and modifications of the numbers and structure of the reservoirs within the system, and the kinetic parameters. These fundamental feature changes should allow close approximation of the major changes of the Earth's surface system in that period of time.

该奖项是为了支持将冰川后碳循环作为一个非稳态系统进行的研究，其中碳包括两个稳定的同位素12C和13C，与地球表面系统四个主要领域中的氮(N)和磷(P)的营养循环相结合：陆地、大气、沿海地带和开阔海洋(包括后两个领域的沉积物)。该项目是夏威夷大学(Mackenzie)和西北大学(Lerman)的合作项目。这项工作将基于主要研究人员开发并在过去300年碳-氮-磷-硫耦合循环研究中取得一定成功的建模方法，当时该系统受到人类环境压力和气温上升的影响。一个新的四个区域和耦合的C-N-P生物地球化学循环模型将包括13C的过去变化和空间分布(有效地将碳循环分为12C和13C循环)、系统内储存库的数量和结构的修改以及动力学参数。这些基本特征的变化应该可以近距离地了解地球表面系统在这段时间内的主要变化。