Publikasjoner

Methane Emissions from the Arctic OCean to the Atmosphere: Present and future climate effects (MOCA). NILU F

Durant, A.J.; Lund-Myhre, C.; Mienert, J.; Myhre, G.; Stohl, A.; Isaksen, I.S.; Pisso, .I, Greinert, J.; Nisbet, E.G.; Paris, J.; Pyle, J.A.; Belan, B.D.; Ruppel, C.D.; Schlager, H.; Spahni, R.

Methane emissions from Australia estimated by inverse analysis using in-situ and Satellite (GOSAT) atmospheric observations

Wang, Fenjuan; Maksyutov, Shamil; Janardanan, Rajesh; Ito, Akihiko; Morino, Isamu; Yoshida, Yukio; Someya, Yu; Tohjima, Yasunori; Kelly, Bryce F. J.; Kaiser, Johannes; Xin, Lan; Mammarella, Ivan; Matsunaga, Tsuneo

Australia has significant sources of atmospheric methane (CH₄), driven by extensive coal and natural gas production, livestock, and large-scale fires. Accurate quantification and characterization of CH₄ emissions are critical for effective climate mitigation strategies in Australia. In this study, we employed an inverse analysis of atmospheric CH₄ observations from the GOSAT satellite and surface measurements from 2016 to 2021 to assess CH₄ emissions in Australia. The inversion process integrates anthropogenic and natural emissions as prior estimates, optimizing them with the NIES-TM-FLEXPART-variational model (NTFVAR) at a resolution of up to 0.1° × 0.1°. We validated the performance of our inverse model using data obtained from the United Nations Environment Program Methane Science (UNEP), Airborne Research Australia 2018 aircraft-based atmospheric CH₄ measurement campaigns. Compared to prior emission estimates, optimized emissions dramatically enhanced the accuracy of modeled concentrations, aligning them much better with observations. Our results indicate that the estimated inland CH4 emissions in Australia amount to 6.84 ± 0.51 Tg CH4 yr−1 and anthropogenic emissions amount to 4.20 ± 0.08 Tg CH4 yr−1, both slightly lower than the values reported in existing inventories. Moreover, our results unveil noteworthy spatiotemporal characteristics, such as upward corrections during the warm season, particularly in Southeastern Australia. During the three most severe months of the 2019–2020 bushfire season, emissions from biomass burning surged by 0.68 Tg, constituting over 71% of the total emission increase. These results highlight the importance of continuous observation and analysis of sectoral emissions, particularly near major sources, to guide targeted emission reduction strategies. The spatiotemporal characteristics identified in this study underscore the need for adaptive and region-specific approaches to CH₄ emission management in Australia.

Methane emission estimates for Ireland using a Bayesian Atmospheric Inversion

Arnold, Delia; O'Dowd, Colin; Martin, Damien; Thompson, Rona Louise

Methane at Svalbard and over the European Arctic Ocean

Myhre, Cathrine Lund

Meteorological data for air pollution assessment. NILU F

Sivertsen, B.

Meteorological and air quality data. Ruwais. Abu Dhabi Air Quality Management Study. NILU OR

Bøhler, T.; Gamal, K.; Haugsbakk, I.; Wasseng, J.

Meteorological and air quality data. Hamdan/Al Miroor Crossing. Abu Dhabi Air Quality Management Study. NILU OR

Bøhler, T.; Gamal, K.; Haugsbakk, I.; Wasseng, J.

Meteorological and air quality data. Al Shahama. Abu Dhabi Air Quality Management Study. NILU OR

Bøhler, T.; Gamal, K.; Haugsbakk, I.; Wasseng, J.

Meteorological and air quality data. Al Mafraq - Baniyas Hospital Clinic. Abu Dhabi Air Quality Management Study. NILU OR

Bøhler, T.; Gamal, K.; Haugsbakk, I.; Wasseng, J.

Meteorological and air quality data at the crossing Airport Road/Khalifa Street. Abu Dhabi Air Quality Management Study. NILU OR

Bøhler, T.; Gamal, K.; Haugsbakk, I.; Wasseng, J.

Meteorologi og lukt fra avfallsdeponier. NILU F

Knudsen, S.

Metanlekkasjen fra Nord Stream

Platt, Stephen Matthew (intervjuobjekt)

Metan slipper ikke ut av polhavet om sommeren.

Solbakken, C.F.; Sojtaric, M.