{"title":"Aerosol radiation characteristics based on Himawari-8 and AERONET in Beijing city","authors":"Qianjun Mao , Xiaoyan Zhang","doi":"10.1016/j.jastp.2024.106411","DOIUrl":null,"url":null,"abstract":"<div><div>Aerosol radiative forcing (ARF) is an important parameter that describes the impact of atmospheric aerosols on the earth-atmosphere radiation balance. This parameter holds significant importance for environmental monitoring and understanding climate change. Aerosol optical depth (AOD) reflects the degree of atmospheric pollution and plays a key role in evaluating ARF. In this paper, the Second Simulation of a Satellite Signal in the Solar Spectrum (6S) is utilized to calculate the ARF in different AOD in Beijing. The variation characteristics of ARF at different time scales are also studied. Meanwhile, the characteristics of ARF under different cloud types are analyzed, and the coupling relationship between cloud parameters and ARF is proposed. The results show the ARF of absorptive aerosol is comparable to that of fine-mode aerosol, while coarse-mode aerosol have the minimum ARF. The ARF varies significantly under different cloud types. The ARF varies from −59.18 ± 11.64 W/m<sup>2</sup> to −104.52 ± 20.90 W/m<sup>2</sup> at the bottom of atmosphere (BOA), from −9.94 ± 1.99 W/m<sup>2</sup> to −27.41 ± 4.11 W/m<sup>2</sup> at the top of the atmosphere (TOA), and from 49.24 ± 9.85 W/m<sup>2</sup> to 77.11 ± 15.42 W/m<sup>2</sup> at the atmosphere (ATM). The results also show a strong correlation between cloud optical thickness and ARF among cloud parameters. This paper contributes to a deeper understanding of aerosol-cloud interactions in the earth-atmosphere system and is important for predicting future climate change.</div></div>","PeriodicalId":15096,"journal":{"name":"Journal of Atmospheric and Solar-Terrestrial Physics","volume":"266 ","pages":"Article 106411"},"PeriodicalIF":1.8000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Atmospheric and Solar-Terrestrial Physics","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1364682624002396","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
Aerosol radiative forcing (ARF) is an important parameter that describes the impact of atmospheric aerosols on the earth-atmosphere radiation balance. This parameter holds significant importance for environmental monitoring and understanding climate change. Aerosol optical depth (AOD) reflects the degree of atmospheric pollution and plays a key role in evaluating ARF. In this paper, the Second Simulation of a Satellite Signal in the Solar Spectrum (6S) is utilized to calculate the ARF in different AOD in Beijing. The variation characteristics of ARF at different time scales are also studied. Meanwhile, the characteristics of ARF under different cloud types are analyzed, and the coupling relationship between cloud parameters and ARF is proposed. The results show the ARF of absorptive aerosol is comparable to that of fine-mode aerosol, while coarse-mode aerosol have the minimum ARF. The ARF varies significantly under different cloud types. The ARF varies from −59.18 ± 11.64 W/m2 to −104.52 ± 20.90 W/m2 at the bottom of atmosphere (BOA), from −9.94 ± 1.99 W/m2 to −27.41 ± 4.11 W/m2 at the top of the atmosphere (TOA), and from 49.24 ± 9.85 W/m2 to 77.11 ± 15.42 W/m2 at the atmosphere (ATM). The results also show a strong correlation between cloud optical thickness and ARF among cloud parameters. This paper contributes to a deeper understanding of aerosol-cloud interactions in the earth-atmosphere system and is important for predicting future climate change.
期刊介绍:
The Journal of Atmospheric and Solar-Terrestrial Physics (JASTP) is an international journal concerned with the inter-disciplinary science of the Earth''s atmospheric and space environment, especially the highly varied and highly variable physical phenomena that occur in this natural laboratory and the processes that couple them.
The journal covers the physical processes operating in the troposphere, stratosphere, mesosphere, thermosphere, ionosphere, magnetosphere, the Sun, interplanetary medium, and heliosphere. Phenomena occurring in other "spheres", solar influences on climate, and supporting laboratory measurements are also considered. The journal deals especially with the coupling between the different regions.
Solar flares, coronal mass ejections, and other energetic events on the Sun create interesting and important perturbations in the near-Earth space environment. The physics of such "space weather" is central to the Journal of Atmospheric and Solar-Terrestrial Physics and the journal welcomes papers that lead in the direction of a predictive understanding of the coupled system. Regarding the upper atmosphere, the subjects of aeronomy, geomagnetism and geoelectricity, auroral phenomena, radio wave propagation, and plasma instabilities, are examples within the broad field of solar-terrestrial physics which emphasise the energy exchange between the solar wind, the magnetospheric and ionospheric plasmas, and the neutral gas. In the lower atmosphere, topics covered range from mesoscale to global scale dynamics, to atmospheric electricity, lightning and its effects, and to anthropogenic changes.