globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50759
论文题名:
Impact of volcanic stratospheric aerosols on diurnal temperature range in Europe over the past 200 years: Observations versus model simulations
作者: Auchmann R.; Arfeuille F.; Wegmann M.; Franke J.; Barriendos M.; Prohom M.; Sanchez-Lorenzo A.; Bhend J.; Wild M.; Folini D.; Štěpánek P.; Brönnimann S.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:16
起始页码: 9064
结束页码: 9077
语种: 英语
Scopus关键词: Aerosols ; Atmospheric radiation ; Computer simulation ; Direct radiative forcing ; Diurnal temperature ranges ; General circulation model simulations ; Radiative effects ; Radiative forcings ; Stratospheric aerosols ; Tropospheric aerosols ; Volcanic eruptions ; Volcanoes ; clear sky ; cloud cover ; diurnal variation ; general circulation model ; numerical model ; radiative forcing ; stratosphere ; temperature gradient ; volcanic aerosol ; volcanic eruption ; weather station ; Europe ; Indonesia ; Lesser Sunda Islands ; Sumbawa ; Sunda Isles ; Tambora ; West Nusa Tenggara
英文摘要: We analyze the impact of stratospheric volcanic aerosols on the diurnal temperature range (DTR) over Europe using long-term subdaily station records. We compare the results with a 28-member ensemble of European Centre/Hamburg version 5.4 (ECHAM5.4) general circulation model simulations. Eight stratospheric volcanic eruptions during the instrumental period are investigated. Seasonal all- and clear-sky DTR anomalies are compared with contemporary (approximately 20 year) reference periods. Clear sky is used to eliminate cloud effects and better estimate the signal from the direct radiative forcing of the volcanic aerosols. We do not find a consistent effect of stratospheric aerosols on all-sky DTR. For clear skies, we find average DTR anomalies of -0.08°C (-0.13°C) in the observations (in the model), with the largest effect in the second winter after the eruption. Although the clear-sky DTR anomalies from different stations, volcanic eruptions, and seasons show heterogeneous signals in terms of order of magnitude and sign, the significantly negative DTR anomalies (e.g., after the Tambora eruption) are qualitatively consistent with other studies. Referencing with clear-sky DTR anomalies to the radiative forcing from stratospheric volcanic eruptions, we find the resulting sensitivity to be of the same order of magnitude as previously published estimates for tropospheric aerosols during the so-called "global dimming" period (i.e., 1950s to 1980s). Analyzing cloud cover changes after volcanic eruptions reveals an increase in clear-sky days in both data sets. Quantifying the impact of stratospheric volcanic eruptions on clear-sky DTR over Europe provides valuable information for the study of the radiative effect of stratospheric aerosols and for geo-engineering purposes. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63420
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Institute of Geography, Oeschger Centre for Climate Change Research, University of Bern, Hallerstrasse 12, Bern CH-3012, Switzerland; Department of Modern History, University of Barcelona, Barcelona, Spain; Catalan Meteorological Service, Barcelona, Spain; Institute for Atmospheric and Climate Science, ETH Zürich, Zurich, Switzerland; Department of Physics, University of Girona, Girona, Spain; CSIROMarine and Atmospheric Research, Aspendale, VIC, Australia; Global Change Research Centre AS CR, V.v.i., Brno, Czech Republic

Recommended Citation:
Auchmann R.,Arfeuille F.,Wegmann M.,et al. Impact of volcanic stratospheric aerosols on diurnal temperature range in Europe over the past 200 years: Observations versus model simulations[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)
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