Insights from Antarctica on volcanic forcing during the Common Era
Assessments of climate sensitivity to projected greenhouse gas concentrations underpin environmental policy decisions, with such assessments often based on model simulations of climate during recent centuries and millennia. These simulations depend critically on accurate records of past aerosol forc...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Nature Publishing Group
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/40481 |
| _version_ | 1848755882771349504 |
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| author | Sigl, M. McConnell, J. Toohey, M. Curran, M. Das, S. Edwards, Peter Isaksson, E. Kawamura, K. Kipfstuhl, S. Krüger, K. Layman, L. Maselli, O. Motizuki, Y. Motoyama, H. Pasteris, D. Severi, M. |
| author_facet | Sigl, M. McConnell, J. Toohey, M. Curran, M. Das, S. Edwards, Peter Isaksson, E. Kawamura, K. Kipfstuhl, S. Krüger, K. Layman, L. Maselli, O. Motizuki, Y. Motoyama, H. Pasteris, D. Severi, M. |
| author_sort | Sigl, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Assessments of climate sensitivity to projected greenhouse gas concentrations underpin environmental policy decisions, with such assessments often based on model simulations of climate during recent centuries and millennia. These simulations depend critically on accurate records of past aerosol forcing from global-scale volcanic eruptions, reconstructed from measurements of sulphate deposition in ice cores. Non-uniform transport and deposition of volcanic fallout mean that multiple records from a wide array of ice cores must be combined to create accurate reconstructions. Here we re-evaluated the record of volcanic sulphate deposition using a much more extensive array of Antarctic ice cores. In our new reconstruction, many additional records have been added and dating of previously published records corrected through precise synchronization to the annually dated West Antarctic Ice Sheet Divide ice core7, improving and extending the record throughout the Common Era. Whereas agreement with existing reconstructions is excellent after 1500, we found a substantially different history of volcanic aerosol deposition before 1500; for example, global aerosol forcing values from some of the largest eruptions (for example, 1257 and 1458) previously were overestimated by 20–30% and others underestimated by 20–50%. |
| first_indexed | 2025-11-14T09:03:22Z |
| format | Journal Article |
| id | curtin-20.500.11937-40481 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:03:22Z |
| publishDate | 2014 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-404812017-09-13T13:39:37Z Insights from Antarctica on volcanic forcing during the Common Era Sigl, M. McConnell, J. Toohey, M. Curran, M. Das, S. Edwards, Peter Isaksson, E. Kawamura, K. Kipfstuhl, S. Krüger, K. Layman, L. Maselli, O. Motizuki, Y. Motoyama, H. Pasteris, D. Severi, M. Assessments of climate sensitivity to projected greenhouse gas concentrations underpin environmental policy decisions, with such assessments often based on model simulations of climate during recent centuries and millennia. These simulations depend critically on accurate records of past aerosol forcing from global-scale volcanic eruptions, reconstructed from measurements of sulphate deposition in ice cores. Non-uniform transport and deposition of volcanic fallout mean that multiple records from a wide array of ice cores must be combined to create accurate reconstructions. Here we re-evaluated the record of volcanic sulphate deposition using a much more extensive array of Antarctic ice cores. In our new reconstruction, many additional records have been added and dating of previously published records corrected through precise synchronization to the annually dated West Antarctic Ice Sheet Divide ice core7, improving and extending the record throughout the Common Era. Whereas agreement with existing reconstructions is excellent after 1500, we found a substantially different history of volcanic aerosol deposition before 1500; for example, global aerosol forcing values from some of the largest eruptions (for example, 1257 and 1458) previously were overestimated by 20–30% and others underestimated by 20–50%. 2014 Journal Article http://hdl.handle.net/20.500.11937/40481 10.1038/NCLIMATE2293 Nature Publishing Group restricted |
| spellingShingle | Sigl, M. McConnell, J. Toohey, M. Curran, M. Das, S. Edwards, Peter Isaksson, E. Kawamura, K. Kipfstuhl, S. Krüger, K. Layman, L. Maselli, O. Motizuki, Y. Motoyama, H. Pasteris, D. Severi, M. Insights from Antarctica on volcanic forcing during the Common Era |
| title | Insights from Antarctica on volcanic forcing during the Common Era |
| title_full | Insights from Antarctica on volcanic forcing during the Common Era |
| title_fullStr | Insights from Antarctica on volcanic forcing during the Common Era |
| title_full_unstemmed | Insights from Antarctica on volcanic forcing during the Common Era |
| title_short | Insights from Antarctica on volcanic forcing during the Common Era |
| title_sort | insights from antarctica on volcanic forcing during the common era |
| url | http://hdl.handle.net/20.500.11937/40481 |