DOI: 10.5194/cp-10-359-2014
Scopus记录号: 2-s2.0-84897673083
论文题名: Volcanic forcing for climate modeling: A new microphysics-based data set covering years 1600-present
作者: Arfeuille F. ; Weisenstein D. ; MacK H. ; Rozanov E. ; Peter T. ; Brönnimann S.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2014
卷: 10, 期: 1 起始页码: 359
结束页码: 375
语种: 英语
Scopus关键词: albedo
; atmospheric forcing
; climate modeling
; data set
; extinction coefficient
; heterogeneity
; Holocene
; ice core
; optical depth
; paleoclimate
; radiative forcing
; size distribution
; spatial distribution
; stratosphere
; sulfur dioxide
; volcanic eruption
; volcanism
英文摘要: As the understanding and representation of the impacts of volcanic eruptions on climate have improved in the last decades, uncertainties in the stratospheric aerosol forcing from large eruptions are now linked not only to visible optical depth estimates on a global scale but also to details on the size, latitude and altitude distributions of the stratospheric aerosols. Based on our understanding of these uncertainties, we propose a new model-based approach to generating a volcanic forcing for general circulation model (GCM) and chemistry-climate model (CCM) simulations. This new volcanic forcing, covering the 1600-present period, uses an aerosol microphysical model to provide a realistic, physically consistent treatment of the stratospheric sulfate aerosols. Twenty-six eruptions were modeled individually using the latest available ice cores aerosol mass estimates and historical data on the latitude and date of eruptions. The evolution of aerosol spatial and size distribution after the sulfur dioxide discharge are hence characterized for each volcanic eruption. Large variations are seen in hemispheric partitioning and size distributions in relation to location/date of eruptions and injected SO2 masses. Results for recent eruptions show reasonable agreement with observations. By providing these new estimates of spatial distributions of shortwave and long-wave radiative perturbations, this volcanic forcing may help to better constrain the climate model responses to volcanic eruptions in the 1600-present period. The final data set consists of 3-D values (with constant longitude) of spectrally resolved extinction coefficients, single scattering albedos and asymmetry factors calculated for different wavelength bands upon request. Surface area densities for heterogeneous chemistry are also provided. © 2014 Author(s). 资助项目: NSF, National Science Foundation
; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49281
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Arfeuille F.,Weisenstein D.,MacK H.,et al. Volcanic forcing for climate modeling: A new microphysics-based data set covering years 1600-present[J]. Climate of the Past,2014-01-01,10(1)