Global atmospheric inversion of the anthropogenic NH3 emissions over 2019-2022 using the LMDZ-INCA chemistry transport model and the IASI NH3 observations
| dc.contributor.author | Kumar, P. | |
| dc.contributor.author | Broquet, G. | |
| dc.contributor.author | Hauglustaine, D. | |
| dc.contributor.author | Beaudor, M. | |
| dc.contributor.author | Clarisse, L. | |
| dc.contributor.author | Van Damme, M. | |
| dc.contributor.author | Coheur, P. | |
| dc.contributor.author | Cozic, A. | |
| dc.contributor.author | Zheng, B. | |
| dc.contributor.author | Revilla Romero, B. | |
| dc.contributor.author | Delavois, A. | |
| dc.contributor.author | Ciais, P. | |
| dc.date | 2025 | |
| dc.date.accessioned | 2025-10-13T10:58:08Z | |
| dc.date.available | 2025-10-13T10:58:08Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/14366 | |
| dc.description | Ammonia (NH3) emissions have been on a continuous rise due to extensive fertilizer usage in agriculture and increasing production of manure and livestock. However, the current global-to-national NH3 emission inventories exhibit large uncertainties. We provide atmospheric inversion estimates of the global NH3 emissions over 2019–2022 at 1.27° × 2.5° horizontal and daily (at 10 d scale) resolution. We use IASI-ANNI-NH3-v4 satellite observations, simulations of NH3 concentrations with the chemistry transport model LMDZ-INCA, and the finite difference mass-balance approach for inversions of global NH3 emissions. We take advantage of the averaging kernels provided in the IASI-ANNI-NH3-v4 dataset by applying them consistently to the LMDZ-INCA NH3 simulations for comparison to the observations and then to invert emissions. The average global anthropogenic NH3 emissions over 2019–2022 are estimated as ∼97 (94–100) Tg yr−1, which is ∼61 % (∼55 %–65 %) higher than the prior Community Emissions Data System (CEDS) inventory's anthropogenic NH3 emissions and significantly higher than two other global inventories: CAMS's anthropogenic NH3 emissions (by a factor of ∼1.8) and the Calculation of AMmonia Emissions in ORCHIDEE (CAMEO) agricultural and natural soil NH3 emissions (by ∼1.4 times). The global and regional budgets are mostly within the range of other inversion estimates. The analysis provides confidence in their seasonal variability and continental- to regional-scale budgets. Our analysis shows a rise in NH3 emissions by ∼5 % to ∼37 % during the COVID-19 lockdowns in 2020 over different regions compared to the same-period emissions in 2019. However, this rise is probably due to a decrease in atmospheric NH3 sinks due to the decline in NOx and SO2 emissions during the lockdowns. | |
| dc.language | eng | |
| dc.title | Global atmospheric inversion of the anthropogenic NH3 emissions over 2019-2022 using the LMDZ-INCA chemistry transport model and the IASI NH3 observations | |
| dc.type | Article | |
| dc.subject.frascati | Earth and related Environmental sciences | |
| dc.audience | Scientific | |
| dc.source.title | Atmospheric Chemistry and Physics | |
| dc.source.volume | 25 | |
| dc.source.issue | 19 | |
| dc.source.page | 12379-12407 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.5194/acp-25-12379-2025 | |
| dc.identifier.url |