An atmospheric perspective on the carbon budgets of terrestrial ecosystems in China:progress and challenges

• 作者: Baozhang Chen Huifang Zhang Tao Wang Xiaoye Zhang
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2021,（17）
• 所属期刊栏目: PERSPECTIVES
• 页码范围: 1713-1718
• 页数: 6页
• 语种: 英文

摘要

The atmospheric inversion is an effective method for quantify-ing surface CO2 fluxes at global and regional scales using the gradi-ent of CO2 measurements and has the advantage of inferring CO2 sources and sinks over large spatial scales.The"2019 Refinement to the 2006IPCC Guidelines for National Greenhouse Gas Inventories"was adopted and accepted during the 49th Session of the Intergov-ernmental Panel on Climate Change(IPCC)in May 2019.In this 2019 refinement,the content of using the"top-down"approach based on atmospheric observations(i.e.,atmospheric inversions of greenhouse gas)was explicitly added for verification of the emission(i.e.,greenhouse gas)inventory[1].The idea of Monitor-ing,Verification and Supporting(MVS)based on atmospheric observations has therefore been formed internationally.The World Meteorological Organization(WMO)is actively promoting the Integrated Global Greenhouse Gas Information System(IG3IS)Pro-gram[2].The program aims to evaluate global and regional green-house gas sources/sinks and their changes,to verify and supplement the"bottom-up"inventory algorithms,to reduce the uncertainties of emission inventory,and finally to provide timely and quantitative guidance for the progress of national emission reduction strategy and commitment[2].