气候变化领域集成服务门户(CCPortal): Aerosol radiative effects in photosynthetically active radiation and total irradiance at a Mediterranean site from an 11-year database

CCPortal

DOI	10.1016/j.atmosres.2021.105538
	Aerosol radiative effects in photosynthetically active radiation and total irradiance at a Mediterranean site from an 11-year database
	Lozano I.L.; Sánchez-Hernández G.; Guerrero-Rascado J.L.; Alados I.; Foyo-Moreno I.
发表日期	2021
ISSN	0169-8095
卷号	255
英文摘要	This study addresses the analysis of the aerosol radiative forcing (ARF) and aerosol forcing efficiency (AFE) at surface in the Photosynthetically Active and Total radiation ranges in a Southwest Mediterranean site. A thorough analysis of a long-term database (2008–2018) has been performed, bringing very valuable results about both, the absolute values and trends in ARF and AFE for both spectral intervals. The largest monthly mean for aerosol optical depth at 500 nm (AOD500) is found in summer (0.16 at July and August) meanwhile the lowest value is in winter (0.08 at November and December), with an interannual range varying from 0.11 ± 0.03 (in 2018) to 0.17 ± 0.03 (in 2014). The AFE variation range has been estimated between −12 and − 198 Wm−2τ−1 for PAR and between −9 and − 450 Wm−2τ−1 for Total irradiance. ARF varies between −1 Wm−2 and -23 Wm−2 in the PAR range, taking values from −1 to −40 Wm−2 in the Total one. This result points out the relevance of the aerosol effects on the PAR range, which can involve up to a 50% of the Total ARF. Moreover, a notable dependence of ARF and AFE on the solar position has been detected, increasing their absolute values at solar zenith angle from 0o to 45o-60o and decreasing to zero for lower solar positions. Additionally, this analysis has revealed the existence of a significant downward trend in AFE values for PAR, with a slope of 2.7 Wm−2τ−1 year−1. Although the slope is positive, taking into account that the AFE values are negative, the slope value implies that the aerosol cooling radiative effect of aerosols is decreasing. However, no trends have been detected neither in AFE nor ARF values in the Total solar range. These results evidence the long-term aerosol effects over the different spectral intervals and emphasize the need for detailed analysis of the aerosol radiative effects on fundamental spectral intervals such as the PAR range. © 2021 Elsevier B.V.
英文关键词	Aerosols; Photosynthetically active radiation; Radiative forcing
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236800
作者单位	Andalusian Institute for Earth System Research, Granada, 18006, Spain; Department of Applied Physics, University of Granada, Granada, 18071, Spain; Applied Physics II Department, University of Málaga, Málaga, 29071, Spain
推荐引用方式 GB/T 7714	Lozano I.L.,Sánchez-Hernández G.,Guerrero-Rascado J.L.,et al. Aerosol radiative effects in photosynthetically active radiation and total irradiance at a Mediterranean site from an 11-year database[J],2021,255.
APA	Lozano I.L.,Sánchez-Hernández G.,Guerrero-Rascado J.L.,Alados I.,&Foyo-Moreno I..(2021).Aerosol radiative effects in photosynthetically active radiation and total irradiance at a Mediterranean site from an 11-year database.Atmospheric Research,255.
MLA	Lozano I.L.,et al."Aerosol radiative effects in photosynthetically active radiation and total irradiance at a Mediterranean site from an 11-year database".Atmospheric Research 255(2021).