Consideration of Top-down Greenhouse Gas Estimation Approaches to Prepare Carbon Neutral Policy

Sangwon Joo, Haeyoung Lee, Jinkyu Hong, Doyoon Kwon, Changsub Shim, Young Suk Oh, Shanlan Li, Samuel Takele Kenea, Soojeong Lee, Jeong Eun Kim, Kyung On Boo

Research output: Contribution to journalArticlepeer-review


It is crucial to estimate the greenhouse gas emissions accurately to manage the global climate crisis. In this regard the World Meteorological Organization (WMO) recommended its member countries to develop the Integrated Global Greenhouse Gas Information System (IG3IS) as a new approach to estimate greenhouse gas emissions based on atmospheric measurements and numerical weather prediction model. Furthermore, 2019 refinement to the 2006 IPCC guideline for national greenhouse gas inventories includes the IG3IS as an independent process of quality assurance, quality control and verification of greenhouse gas emissions to supplement traditional bottom-up method. In these circumstances, Korea Meteorological Administration launched WMO endorsed IG3IS project to produce top-down greenhouse gas emissions operationally and we propose to encourage corporation with relevant research groups as follows: (1) Understanding the variations in natural net greenhouse gas emissions stems from climate changes. (2) Refining the uncertainty of the emission of non-CO2 gases such as CH4, N2O, and F-gases. (3) Identifying the missing or sporadic emission sources with the help of integrating characteristics of the top-down method. (4) Resolving the discrepancy between the national total emission and the integrated emission from the local governments. (5) Prioritizing research areas of reducing emission uncertainty based on the differences between the top-down and bottom-up emissions.

Translated title of the contribution탄소중립을 위한 하향식 온실가스 배출 분석기법 개발 및 활용 방안
Original languageEnglish
Pages (from-to)933-947
Number of pages15
JournalJournal of Korean Society for Atmospheric Environment
Issue number6
Publication statusPublished - 2022 Dec

Bibliographical note

Publisher Copyright:
© 2022, Journal of Korean Society for Atmospheric Environment.All Rights Reserved.

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Environmental Science (miscellaneous)
  • Pollution


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