Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.08.001 |
Solar eclipse of 20 March 2015 and impacts on irradiance, meteorological parameters, and aerosol properties over southern Italy | |
Romano, S.1; Lo Feudo, T.2; Calidonna, C. R.2; Burlizzi, P.1; Perrone, M. R.1 | |
2017-12-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 198页码:43790 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy |
英文摘要 | The effects of the partial solar eclipse of 20 March 2015 on short-wave (SW) and long-wave (LW) irradiance measurements, meteorological variables, and near surface particle properties have been investigated. Measurements were performed at three southern Italy observatories of the Global Atmospheric Watch - World Meteorological Organization (GAW-WMO): Lecce (LE, 40.3 degrees N, 18.1 degrees E, 30 m a.s.l.), Lamezia Terme (LT, 38.9 degrees N, 16.2 degrees E, 50 m a.s.l.), and Capo Granitola (CG, 37.6 degrees N, 12.7 degrees E, 50 m a.s.l.), to investigate the dependence of the eclipse effects on monitoring site location and meteorology. LE, LT, and CG were affected by a similar maximum obscuration of the solar disk, but meteorological parameters and aerosol optical and microphysical properties varied from site to site on the eclipse's day. The maximum obscuration of the solar disk, which was equal to 43.6, 42.8, and 45.1% at LE, LT, and CG, respectively, was responsible for the decrease of the downward SW irradiance up to 45, 44, and 45% at LE, LT, and CG, respectively. The upward SW irradiance decreased up to 45, 48, and 44% at LE, LT, and CG, respectively. Consequently, the eclipse SW direct radiative forcing (DRF) was equal to - 307, - 278, and - 238 W m(-2) at LE, LT, and CG, respectively, at the maximum obscuration of the solar disk. The downward and upward LW irradiance decrease was quite small (up to 4%) at the three sites. The time evolution of the meteorological parameters and aerosol optical and microphysical properties and their response strength to the solar eclipse impact varied from site to site, mainly because of the local meteorology and geographical location. Nevertheless, the solar eclipse was responsible at the study sites for a temperature decrease within 0.5-0.8 K, a relative humidity increase within 3.5-4.5%, and a wind speed decrease within 0.5-1.0 m s(-1), because of its cooling effect. The solar eclipse was also responsible at all the sites for the increase of near surface particle scattering coefficient ((sigma(sp)) and scattering color ratio (CR sigma), mainly for the increase of both ultrafine and fine mode particle concentrations. In more detail, sigma(sp), CR sigma, and number concentration increased up to 2 Mm(-1), 0.2, and 9.10(3) cm(-3), respectively. The atmospheric turbulence weakening, driven by the eclipse cooling effect and revealed by the decrease of turbulent kinetic energy and potential temperature flux, mainly contributed to the changes of near surface particle concentrations and size distributions. |
英文关键词 | Solar eclipse Short-wave irradiance Long-wave irradiance Meteorological variables Aerosol optical and microphysical properties |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413281000002 |
WOS关键词 | CENTRAL MEDITERRANEAN SITE ; 11 AUGUST 1999 ; OPTICAL-PROPERTIES ; SURFACE RADIATION ; INTEGRATING NEPHELOMETER ; ATMOSPHERIC RESPONSE ; GREECE ; 3-WAVELENGTH ; SENSITIVITY ; PERFORMANCE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38316 |
专题 | 地球科学 |
作者单位 | 1.Univ Salento, Dipartimento Matemat & Fis, I-73100 Lecce, Italy; 2.CNR ISAC, UOS Lamezia Terme, I-88046 Lamezia Terme, CZ, Italy |
推荐引用方式 GB/T 7714 | Romano, S.,Lo Feudo, T.,Calidonna, C. R.,et al. Solar eclipse of 20 March 2015 and impacts on irradiance, meteorological parameters, and aerosol properties over southern Italy[J]. ATMOSPHERIC RESEARCH,2017,198:43790. |
APA | Romano, S.,Lo Feudo, T.,Calidonna, C. R.,Burlizzi, P.,&Perrone, M. R..(2017).Solar eclipse of 20 March 2015 and impacts on irradiance, meteorological parameters, and aerosol properties over southern Italy.ATMOSPHERIC RESEARCH,198,43790. |
MLA | Romano, S.,et al."Solar eclipse of 20 March 2015 and impacts on irradiance, meteorological parameters, and aerosol properties over southern Italy".ATMOSPHERIC RESEARCH 198(2017):43790. |
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