2023-11-29 08:00 |
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2023-11-27 15:46 |
[FZJ-2023-04915]
Abstract
Ma, X. ; Huang, J. ; Sprenger, M. ; et al
The Footprint of Growing Stratospheric Transport Contribution in Tropospheric Ozone
The long-term ozone changes in the middle to upper troposphere, of importance to climate radiative forcing and setting the baseline for tropospheric ozone pollution, are not well quantified from observations in East Asia. In this study, three decades of observations from ozone soundings are examined with meteorological reanalysis data and climate model simulations to characterize regional features in tropospheric ozone and investigate their driving factors along the northwestern Pacific coastal region. [...]
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2023-11-27 15:29 |
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2023-11-27 15:01 |
[FZJ-2023-04908]
Abstract
Khaykin, S. ; Podglajen, A. ; Ploeger, F. ; et al
Global perturbation of stratospheric water and aerosol burden by the Hunga Tonga eruption: a 1-year aftermath
2023EGU General Asssembly 2023 Wien, WienWien, Austria, 24 Apr 2023 - 28 Apr 20232023-04-242023-04-28
The eruption of the submarine Hunga Tonga Hunga Hapaii volcano on 15 January 2022 was associated with a powerful blast that injected sulfur and water to altitudes up to 58 km. In this study, we combine the data from various satellite instruments (MLS, OMPS-LP, CALIOP, SAGE III, Aeolus, COSMIC-2, ACE-FTS, GOES, Himawari), ground-based lidars at various locations, meteorological radiosoundings as well as model simulation using CLaMS chemistry-transport model to investigate the evolution of the stratospheric moisture and sulfate aerosol plume at a wide range of scales—from minutes and kilometres to monthly and planetary scale. [...]
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2023-11-27 14:42 |
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2023-11-27 14:30 |
[FZJ-2023-04903]
Abstract
Duchamp, C. ; Legras, B. ; Sellitto, P. ; et al
The evolution and dynamics of the sulfate aerosol plume in the stratosphere after the exceptional Tonga eruption of 15 January 2022
2023EGU General Asssembly 2023 Wien, WienWien, Austria, 24 Apr 2023 - 28 Apr 20232023-04-242023-04-28
We use a combination of seven space-borne instruments to study the unprecedented stratospheric plume after the Tonga eruption of 15 January 2022.The aerosol plume was initially formed of two clouds at 30 and 28 km mostly composed of submicron-sized sulfate particles, without ashes washed-out within the first day following the eruption. The large amount of injected water vapour led to a fast conversion of SO2 to sulfate aerosols and induced a descent of the plume to 24-26 km over the first 3 weeks by radiative cooling. [...]
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2023-11-27 14:16 |
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2023-11-23 13:38 |
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2023-11-21 13:29 |
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2023-11-16 11:41 |
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