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Initial fate of fine ash and sulfur from large volcanic eruptions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Niemeier, Ulrike Timmreck, Claudia Graf, Hans-F. Kinne, Stefan Rast, Sebastian Self, S. |
| Copyright Year | 2009 |
| Abstract | Large volcanic eruptions emit huge amounts of sulfur and fine ash into the stratosphere. These products cause an impact on radiative processes, temperature and wind patterns. In simulations with a General Circulation Model in- cluding detailed aerosol microphysics, the relation between the impact of sulfur and fine ash is determined for different eruption strengths and locations, one in the tropics and one in high Northern latitudes. Fine ash with effective radii between 1 µm and 15 µm has a lifetime of several days only. Never- theless, the strong absorption of shortwave and long-wave ra- diation causes additional heating and cooling of ±20K/day and impacts the evolution of the volcanic cloud. Depending on the location of the volcanic eruption, transport direction changes due to the presence of fine ash, vortices develop and temperature anomalies at ground increase. The results show substantial impact on the local scale but only minor impact on the evolution of sulfate in the stratosphere in the month after the simulated eruptions. |
| Starting Page | 9043 |
| Ending Page | 9057 |
| Page Count | 15 |
| File Format | PDF HTM / HTML |
| DOI | 10.5194/acp-9-9043-2009 |
| Volume Number | 9 |
| Alternate Webpage(s) | https://www.atmos-chem-phys.net/9/9043/2009/acp-9-9043-2009.pdf |
| Alternate Webpage(s) | https://www.atmos-chem-phys-discuss.net/9/17531/2009/acpd-9-17531-2009.pdf |
| Alternate Webpage(s) | https://doi.org/10.5194/acp-9-9043-2009 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
