Collaborative Research: Synthesis of Arctic System Carbon Cycle Research Through Model-Data Fusion Studies Using Atmospheric Inversion and Process-Based Approaches

高纬度陆地和海洋系统向大气释放的大量CO2和CH4有可能以一种加速全球变暖的方式影响气候系统。为了提高我们预测高纬度地区碳动态的能力，该团队以以下一般性问题为指导，全面分析了北极系统的碳循环：泛北极地区CO2和CH4通量的地理格局是什么，平衡是如何随时间变化的；泛北极地区CO2和CH4的源和汇的控制过程是什么，控制过程是如何随时间变化的？为了解决这些一般性问题，该小组将利用预测和反演相结合的方法整合北极系统的CO2和CH4动态数据，并提供一种综合方法来估计和理解该系统陆地和海洋组分的CO2和CH4交换。由于气候系统容易受到高纬度地区二氧化碳和甲烷大量释放的影响，这些气体对气候变化的响应具有全球性后果。这项研究将汇集不同的区域数据集，并在一组相关联的数值模型研究的背景下理解。它将检查并试图量化北极碳和甲烷循环的陆地、大气和海洋组成部分之间的通量和联系。

AbstractA large release of CO2 and CH4 from high latitude terrestrial and marine systems to theatmosphere has the potential to affect the climate system in a way that may accelerate global warming. To improve our ability to predict the dynamics of carbon in high latitudes, this team analyze comprehensively the carbon cycle of the arctic system, guided by the following general questions: What are the geographic patterns of fluxes of CO2 and CH4 over the Pan-Arctic region and how is the balance changing over time and What processes control the sources and sinks of CO2 and CH4 over the Pan-Arctic region and how do the controls change with time?To address these general questions, the group will integrate data on CO2 and CH4 dynamics of the Arctic System using a combination of prognostic and inverse approaches and provide an integrative approach to estimating and understanding the exchanges of CO2 and CH4 from terrestrial and marine components of the system.Because the climate system is vulnerable to significant releases of CO2 and CH4 from high latitudes, the responses of these gases to climate change have global consequences. This study will bring together diverse regional data sets and understanding in the context of a linked set of numerical model studies. It will examine, and attempt to quantify, the fluxes and links between the terrestrial, atmospheric and oceanic components of the Arctic carbon and methane cycles.