Climate response to a volcanic eruption in an offline climate-chemistry modeling system
- Climate response to a volcanic eruption in an offline climate-chemistry modeling system
- 문병권; 윤대옥; 박록진; 예상욱; 김원모; 김영호; 정재인; 우정헌; 임을규; 송창근
- Issue Date
- EGU General Assembly 2010
- Mt. Baekdu is one of the most highly active volcanoes since its eruption about 1000 years ago. We estimated the
climate response to the probable eruption and thus large enhancements in volcanic aerosols in the atmosphere with
an offline coupled climate (CCSM3)-chemistry (GEOS-Chem) model. We first conducted a GEOS-Chem aerosol
simulation with an assumed volcanic activity at Mt. Baekdu. Simulated volcanic aerosols were passed in the climate
model using a linking tool developed for providing GEOS-Chem data as the CCSM3 input conditions. A simulated
volcanic cloud was transported eastward and resulted in cooling (warming) tendencies in the midlatitude (polar)
region. In transient simulations, the cooling condition lasted for 2 months in East Asia after the eruption stopped.
Results also showed the wave-like perturbation in both temperature and geopotential height fields propagating
from East Asia to North America, indicating teleconnection effects due to volcano eruptions.
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