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表面CO2观测网络的最佳设计,以限制中国的陆地碳汇

Yilong Wang¹, Xiangjun Tian², Minzheng Duan³

¹State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.

Science bulletin

|July 20, 2023

概括

设计一个强大的二氧化碳观测网络对于准确估计中国的陆地碳汇至关重要. 部署60个站点大大降低了不确定性,有助于实现国家净零目标.

科学领域:

环境科学环境科学
大气中的化学成分
气候建模气候建模

背景情况:

准确估计陆地碳汇对于中国到2060年的净零目标至关重要.
大气逆转提供了空间显式的二氧化碳流量估计,但由于二氧化碳观测网络稀疏而存在不确定性.

研究的目的:

设计一个优化的二氧化碳观测网络,以尽量减少中国陆地碳汇估计的不确定性.
为了提高大气逆转模型用于碳流量监测的准确性.

主要方法:

利用区域大气逆转框架来模拟不同观测网络密度的影响.
评估了与不同数量的二氧化碳观测站相反的土地碳汇估计的不确定性降低.

主要成果:

中国陆地碳汇估计的不确定性从~1 PgC a-1降至30个站的0.3 PgC a-1和60个站的0.2 PgC a-1.
拟议的站点位置集中在高生产率地区和卫星数据有限的地区.
设计的网络增强了对中国东南部,中国东北部,中国北部和西藏高原的覆盖范围.

结论:

优化地面二氧化碳观测网络对于减少中国陆地碳汇估计的不确定性至关重要.
拟议的网络设计为监测中国陆地碳流的综合观测系统提供了关键的基础.
这种方法支持基于证据的气候减缓战略和实现国家气候目标.

关键词:

大气的反转是大气的反转.) 的 CO2 发电站.中国的土地吸收碳.网络设计网络设计后来的不确定性后来的不确定性

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