INVERSE KOREA

South Korea has implemented a policy to achieve carbon neutrality by 2050. As part of the efforts towards meeting this goal, Korea's Meteorological Administration/National Institute of Meteorological Sciences (KMA/NIMS) launched INVERSE-KOREA (Inverse modeling for Validating and Evaluating the Reduction of Sectoral greenhouse gas Emissions in KOREA). NIMS has a long history and extensive experience in measuring atmospheric greenhouse gases, and has contributed to the WMO/GAW greenhouse gas measurements. Furthermore, the Korean Integrated Model (KIM) recently began operating better weather flow simulation in Korea using extremely dense observations on the Korean Peninsula.

With the success of greenhouse gas observations and numerical modeling efforts, NIMS has much to contribute to WMO's IG³IS program and can support the national greenhouse gas reduction policy by reducing the uncertainty in the national emission inventory.

Phase 1, 2021-2023 consists of 3 steps, as follows:

1. Installing the inversions WRF-DART-based system; footprint simulation with STILT and WRF, and GEOS-chem based inversion systems will be installed to reduce the uncertainty of the WRF-DART inversion

2. Testing and evaluating the installed inversion systems and compare with the bottom-up national inventory reports

3. Starting the service of near-real-time top-down emission products for inventory communities and public, targeting CO₂ as of 2021 and subsequently applying this inversion system to CH₄ and SF₆