Solar and volcanic forcing of the Southern Hemisphere climate over the past 1500 years

Simple item page
dc.contributor.authorPhipps, SJen_AU
dc.contributor.authorAckerley, Den_AU
dc.contributor.authorBrown, JRen_AU
dc.contributor.authorCurran, MAJen_AU
dc.contributor.authorFischer, MJen_AU
dc.contributor.authorGallant, Aen_AU
dc.contributor.authorGergis, Jen_AU
dc.contributor.authorMcGregor, HVen_AU
dc.contributor.authorNeukom, Ren_AU
dc.contributor.authorPlummer, Cen_AU
dc.contributor.authorStevenson, Sen_AU
dc.contributor.authorvan Ommen, TDen_AU
dc.date.accessioned2020-06-09T04:29:13Zen_AU
dc.date.available2020-06-09T04:29:13Zen_AU
dc.date.issued2013-02-13en_AU
dc.date.statistics2020-06-01en_AU
dc.description.abstractThe past 1500 years provides a valuable opportunity to study the role of external forcings in driving the global climate. Significant changes have taken place within the climate system over this period, and proxy data that records these changes covers a wide geographical area and has high temporal resolution. Natural and anthropogenic forcings are also reasonably well constrained. While previous detection and attribution studies have found a significant role of volcanic eruptions in driving the pre-industrial Northern Hemisphere climate, the drivers of the Southern Hemisphere climate are much less well understood. Here, the CSIRO Mk3L climate system model is used to simulate the global climate of the past 1500 years. Different combinations of natural and anthropogenic forcings are applied, including changes in the Earth’s orbital parameters, solar irradiance, volcanic emissions and anthropogenic greenhouse gases. The simulations are then compared with a multi-proxy reconstruction of Southern Hemisphere temperature. We find strong solar and volcanic influences on the Southern Hemisphere climate during the pre-industrial period, with the anthropogenic signal becoming increasingly dominant after 1850 CE. However, the results are sensitive to the specific reconstructions of solar and volcanic activity that are used to drive the model. The choice of volcanic reconstruction is particularly critical, and we find that the dating of major eruptions can impact significantly upon the agreement between the model and the proxy record. If we are to learn all that we can from the climate of recent millennia, a critical challenge is therefore to develop better reconstructions of past climatic forcings − particularly volcanic eruptions. en_AU
dc.identifier.citationPhipps, S., Ackerley, D., Brown, J., Curran, M., Fischer, M., Gallant, A., Gergis, J., McGregor, H., Neukom, R., Plummer, C., Stevenson, S., & van Ommen, T. (2013). Solar and volcanic forcing of the Southern Hemisphere climate over the past 1500 years. Paper presented the Past Global Changes 4th Open Science Meeting, Goa, India 13-16 February 2013.en_AU
dc.identifier.conferenceenddate16 February 2013en_AU
dc.identifier.conferencenamePast Global Changes 4th Open Science Meetingen_AU
dc.identifier.conferenceplaceGoa, Indiaen_AU
dc.identifier.conferencestartdate13 February 2013en_AU
dc.identifier.govdoc9672en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9521en_AU
dc.language.isoenen_AU
dc.publisherPast Global Changesen_AU
dc.subjectSolar activityen_AU
dc.subjectVolcanic gasesen_AU
dc.subjectSouthern Hemisphereen_AU
dc.subjectClimatesen_AU
dc.subjectVolcanoesen_AU
dc.subjectGeographical variationsen_AU
dc.subjectGreenhouse gasesen_AU
dc.titleSolar and volcanic forcing of the Southern Hemisphere climate over the past 1500 yearsen_AU
dc.typeConference Presentationen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
OSM2013abstract_book.pdf
Size:
5.67 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications