Sulfate aerosol properties derived from combining coincident ACE-FTS and SAGE III/ISS measurements

被引：1
|
作者：
Boone, C. D. [1 ]
Bernath, P. F. [1 ,2 ]
Pastorek, A. [2 ]
Lecours, M. [1 ]
机构：
[1] Univ Waterloo, Dept Chem, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada
[2] Old Dominion Univ, Dept Chem & Biochem, Norfolk, VA 23529 USA
来源：
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2024年 / 312卷
关键词：
Sulfate aerosols; Bimodal distribution; Raikoke; Tonga; SULFURIC-ACID; OPTICAL-PROPERTIES; RETRIEVAL; SIZE; TEMPERATURE; ABSORPTION; ERUPTIONS; RAIKOKE; OZONE; LAYER;
D O I：
10.1016/j.jqsrt.2023.108815
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Combining infrared aerosol transmittance spectra from the Atmospheric Chemistry Experiment Fourier trans -form spectrometer (ACE-FTS) and visible/near infrared extinction information from coincident SAGE III/ISS measurements, the properties of stratospheric sulfate aerosols are derived under various conditions. Assuming a bimodal size log-normal distribution (rather than a monomodal one) is required to properly characterize the spectra. Analysis is performed for enhanced sulfate conditions following two recent volcanic eruptions, the Raikoke eruption in 2019 and the Hunga Tonga-Hunga Ha'apai eruption in 2022, as well as for measurements under background sulfate conditions. The traditional analysis approach of assuming a monomodal distribution likely contributes to the large uncertainties for the impact of sulfate aerosols on climate.
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页数：12
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