Tracking SO2 plumes from the Tonga volcano eruption with multi-satellite observations

Xia, Congzi; Liu, Cheng; Cai, Zhaonan; Wu, Hongyu; Li, Qingxiang; Gao, Meng

doi:10.1016/j.isci.2024.109446

Cited by 2 publications

(1 citation statement)

References 48 publications

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“…different types of clouds [22,23,77], water vapour [12], etc. Furthermore, the reasons for these discrepancies [50,66,68,78] are due to data uncertainty [41,79], different methods, different areas and periods. It is worth mentioning that the PLSR method used in this paper has high requirements for the quality of modelling data (inhomogenities, inter-annual biases).…”

Section: Discussionmentioning

confidence: 99%

An effort to distinguish the effects of cloud cover and aerosols on the decadal variations of surface solar radiation in the Northern Hemisphere

Jiao,

Su,

et al. 2024

Environ. Res. Lett.

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Surface solar radiation (SSR) serves as the primary energy source on Earth. However, a relative lack of research systematically quantifies long-term SSR variations and their driving factors based on complete and reliable baseline data. This paper presents a new assessment of the Northern Hemisphere/regional SSR variations and the influence of total cloud cover (TCC) on these variations, based on the latest reconstructed SSR gridded dataset. We also address multicollinearity among multiple aerosol types and quantify the effects of multiple aerosol/precursors on SSR variability using a partial least squares regression (PLSR) model. The results indicate that TCC is not the predominant driver of longer-term SSR variations, known as "dimming" and "brightening". The variations of NH3 and SO2 primarily drive inter-decadal SSR variations in North America, while the variations of SO2 and NOX mainly influence inter-decadal SSR variations in Europe.

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Section: Discussionmentioning

confidence: 99%

An effort to distinguish the effects of cloud cover and aerosols on the decadal variations of surface solar radiation in the Northern Hemisphere

Jiao,

Su,

et al. 2024

Environ. Res. Lett.

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Retrieval of stratospheric aerosol extinction coefficients from sun-normalized Ozone Mapper and Profiler Suite Limb Profiler (OMPS-LP) measurements

Rozanov,

Pohl,

Arosio

et al. 2024

Atmos. Meas. Tech.

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Abstract. A new retrieval approach for obtaining vertical profiles of the aerosol extinction coefficient from measurements of scattered solar light in the limb-viewing geometry made by the Ozone Mapper and Profiler Suite Limb Profiler (OMPS-LP) instrument is presented. In contrast to many other published limb-scatter retrievals, our new algorithm does not employ normalization by a limb measurement at an upper tangent height. Instead, the measured limb radiances are normalized to solar irradiance. The main advantage of this approach is an almost complete elimination of the dependence of the retrieval results on the prior aerosol extinction profile used in the retrieval. This makes the retrieval better suited for the analysis of observation scenes with highly elevated aerosol plumes, such as those that occurred after the Hunga Tonga–Hunga Ha′apai volcanic eruption in January 2022. The results from the new approach were compared to the vertical profiles of the aerosol extinction coefficients retrieved from the Stratospheric Aerosol and Gas Experiment III on the International Space Station (SAGE III/ISS) and the Optical Spectrograph and InfraRed Imaging System (OSIRIS). In general, agreement within 25 % between the different data products was observed in the 18–23 km altitude range, although larger differences were seen after very strong volcanic eruptions and wildfires. In comparison with OSIRIS, larger differences are seen at high southern latitudes (above 60° S). The new data product was used to investigate the evolution of the aerosol plume after the Hunga Tonga–Hunga Ha′apai volcanic eruption.

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Tracking SO2 plumes from the Tonga volcano eruption with multi-satellite observations

Cited by 2 publications

References 48 publications

An effort to distinguish the effects of cloud cover and aerosols on the decadal variations of surface solar radiation in the Northern Hemisphere

An effort to distinguish the effects of cloud cover and aerosols on the decadal variations of surface solar radiation in the Northern Hemisphere

Retrieval of stratospheric aerosol extinction coefficients from sun-normalized Ozone Mapper and Profiler Suite Limb Profiler (OMPS-LP) measurements

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