Technical details concerning development of a 1200 yr proxy index for global volcanism
This report describes details of developing a volcano forcing reconstruction (Crowley et al., 2008) for climate models that is based primarily on sulphate records in Antarctic and Greenland ice cores. The chronology of eruptions is considered accurate to within 1 yr for the interval AD 1104–2000 and...
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ftdoajarticles:oai:doaj.org/article:258d59defdcf439a9d394d2a98e52456 2023-05-15T13:43:17+02:00 Technical details concerning development of a 1200 yr proxy index for global volcanism T. J. Crowley M. B. Unterman 2013-05-01T00:00:00Z https://doi.org/10.5194/essd-5-187-2013 https://doaj.org/article/258d59defdcf439a9d394d2a98e52456 EN eng Copernicus Publications http://www.earth-syst-sci-data.net/5/187/2013/essd-5-187-2013.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-5-187-2013 1866-3508 1866-3516 https://doaj.org/article/258d59defdcf439a9d394d2a98e52456 Earth System Science Data, Vol 5, Iss 1, Pp 187-197 (2013) Environmental sciences GE1-350 Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/essd-5-187-2013 2022-12-31T00:31:06Z This report describes details of developing a volcano forcing reconstruction (Crowley et al., 2008) for climate models that is based primarily on sulphate records in Antarctic and Greenland ice cores. The chronology of eruptions is considered accurate to within 1 yr for the interval AD 1104–2000 and about 2 yr for AD 800–1103. The reconstruction involves (1) calibration against satellite aerosol optical depth (AOD) estimates of the 1991 Pinatubo/Hudson eruptions; (2) partial validation against independent lunar estimates of AOD and global sulphate emissions; (3) partial assessment of uncertainties in AOD estimates; (4) assessment of possible tropical "false positives" in ice core reconstructions due to simultaneous occurrence of mid/high-latitude eruptions in each hemisphere; (5) identification of a new category of eruptions, termed "unipolar" tropical eruptions, in which the eruption plume penetrates mainly to polar regions in only the hemisphere of its eruption; (6) use of different growth curves for high- and low-latitude eruptions; (7) specification of 2/3 power shortwave scaling for eruptions larger than the 1991 Pinatubo eruption; (8) introduction of an estimate of effective particle size that affects lifetime and scattering properties of stratospheric aerosols; and (9) utilization of bimonthly-resolution electrical conductivity measurements to estimate the eruption date of the 1258/1259 eruption as 1257.7±0.2. The data, and a high-temporal resolution reconstruction for climate models, are available at: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:14168 . Article in Journal/Newspaper Antarc* Antarctic Greenland Greenland ice cores ice core Directory of Open Access Journals: DOAJ Articles Antarctic Greenland Hudson Earth System Science Data 5 1 187 197 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
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Environmental sciences GE1-350 Geology QE1-996.5 T. J. Crowley M. B. Unterman Technical details concerning development of a 1200 yr proxy index for global volcanism |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
This report describes details of developing a volcano forcing reconstruction (Crowley et al., 2008) for climate models that is based primarily on sulphate records in Antarctic and Greenland ice cores. The chronology of eruptions is considered accurate to within 1 yr for the interval AD 1104–2000 and about 2 yr for AD 800–1103. The reconstruction involves (1) calibration against satellite aerosol optical depth (AOD) estimates of the 1991 Pinatubo/Hudson eruptions; (2) partial validation against independent lunar estimates of AOD and global sulphate emissions; (3) partial assessment of uncertainties in AOD estimates; (4) assessment of possible tropical "false positives" in ice core reconstructions due to simultaneous occurrence of mid/high-latitude eruptions in each hemisphere; (5) identification of a new category of eruptions, termed "unipolar" tropical eruptions, in which the eruption plume penetrates mainly to polar regions in only the hemisphere of its eruption; (6) use of different growth curves for high- and low-latitude eruptions; (7) specification of 2/3 power shortwave scaling for eruptions larger than the 1991 Pinatubo eruption; (8) introduction of an estimate of effective particle size that affects lifetime and scattering properties of stratospheric aerosols; and (9) utilization of bimonthly-resolution electrical conductivity measurements to estimate the eruption date of the 1258/1259 eruption as 1257.7±0.2. The data, and a high-temporal resolution reconstruction for climate models, are available at: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:14168 . |
format |
Article in Journal/Newspaper |
author |
T. J. Crowley M. B. Unterman |
author_facet |
T. J. Crowley M. B. Unterman |
author_sort |
T. J. Crowley |
title |
Technical details concerning development of a 1200 yr proxy index for global volcanism |
title_short |
Technical details concerning development of a 1200 yr proxy index for global volcanism |
title_full |
Technical details concerning development of a 1200 yr proxy index for global volcanism |
title_fullStr |
Technical details concerning development of a 1200 yr proxy index for global volcanism |
title_full_unstemmed |
Technical details concerning development of a 1200 yr proxy index for global volcanism |
title_sort |
technical details concerning development of a 1200 yr proxy index for global volcanism |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/essd-5-187-2013 https://doaj.org/article/258d59defdcf439a9d394d2a98e52456 |
geographic |
Antarctic Greenland Hudson |
geographic_facet |
Antarctic Greenland Hudson |
genre |
Antarc* Antarctic Greenland Greenland ice cores ice core |
genre_facet |
Antarc* Antarctic Greenland Greenland ice cores ice core |
op_source |
Earth System Science Data, Vol 5, Iss 1, Pp 187-197 (2013) |
op_relation |
http://www.earth-syst-sci-data.net/5/187/2013/essd-5-187-2013.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-5-187-2013 1866-3508 1866-3516 https://doaj.org/article/258d59defdcf439a9d394d2a98e52456 |
op_doi |
https://doi.org/10.5194/essd-5-187-2013 |
container_title |
Earth System Science Data |
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5 |
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1 |
container_start_page |
187 |
op_container_end_page |
197 |
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1766186677134426112 |