Effect of Relative Humidity on Arctic Aerosols
In this paper, the authors investigated some microphysical and optical properties of arctic aerosols extracted from the data base Optical Properties of Aerosols and Clouds(OPAC) to determine the effect of hygroscopic growth at the spectral range of 0.25?m to 2.5?m and eight relative humilities (RHs)...
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ftiisteojs:oai:ojs.localhost:article/16320 2023-07-23T04:17:33+02:00 Effect of Relative Humidity on Arctic Aerosols Galadanci, G.S.M. Tijjani, B. I. 2014-10-29 application/pdf https://www.iiste.org/Journals/index.php/APTA/article/view/16320 eng eng The International Institute for Science, Technology and Education (IISTE) https://www.iiste.org/Journals/index.php/APTA/article/view/16320/16726 https://www.iiste.org/Journals/index.php/APTA/article/view/16320 Advances in Physics Theories and Applications; Vol 36 (2014); 1-19 info:eu-repo/semantics/article Peer-reviewed Article info:eu-repo/semantics/publishedVersion 2014 ftiisteojs 2023-07-01T18:48:14Z In this paper, the authors investigated some microphysical and optical properties of arctic aerosols extracted from the data base Optical Properties of Aerosols and Clouds(OPAC) to determine the effect of hygroscopic growth at the spectral range of 0.25?m to 2.5?m and eight relative humilities (RHs) (0, 50, 70, 80, 90, 95, 98, and 99%).The microphysical properties extracted were radii, volume mix ratio, number mix ratio and mass mix ratio as a function of RH while the optical properties are scattering and absorption coefficients and asymmetric parameters. Using the microphysical properties, effective growth factors of the mixtures were determined while using optical properties enhancement parameters were determined and then parameterized using some models. We observed that the data fitted the models very well. The angstrom coefficients which determined the type of particles size distribution increases with the increase in RHs except at the delinquent point where it decreases with the increase in RHs. The mixture was determined to have bimodal type of distribution with the dominance of fine mode particles but non-spherical. Keywords: microphysical properties, optical properties, hygroscopic growth, enhancement parameters, models, parametrisation. Article in Journal/Newspaper Arctic International Institute for Science, Technology and Education (IISTE): Journals Arctic |
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International Institute for Science, Technology and Education (IISTE): Journals |
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ftiisteojs |
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English |
description |
In this paper, the authors investigated some microphysical and optical properties of arctic aerosols extracted from the data base Optical Properties of Aerosols and Clouds(OPAC) to determine the effect of hygroscopic growth at the spectral range of 0.25?m to 2.5?m and eight relative humilities (RHs) (0, 50, 70, 80, 90, 95, 98, and 99%).The microphysical properties extracted were radii, volume mix ratio, number mix ratio and mass mix ratio as a function of RH while the optical properties are scattering and absorption coefficients and asymmetric parameters. Using the microphysical properties, effective growth factors of the mixtures were determined while using optical properties enhancement parameters were determined and then parameterized using some models. We observed that the data fitted the models very well. The angstrom coefficients which determined the type of particles size distribution increases with the increase in RHs except at the delinquent point where it decreases with the increase in RHs. The mixture was determined to have bimodal type of distribution with the dominance of fine mode particles but non-spherical. Keywords: microphysical properties, optical properties, hygroscopic growth, enhancement parameters, models, parametrisation. |
format |
Article in Journal/Newspaper |
author |
Galadanci, G.S.M. Tijjani, B. I. |
spellingShingle |
Galadanci, G.S.M. Tijjani, B. I. Effect of Relative Humidity on Arctic Aerosols |
author_facet |
Galadanci, G.S.M. Tijjani, B. I. |
author_sort |
Galadanci, G.S.M. |
title |
Effect of Relative Humidity on Arctic Aerosols |
title_short |
Effect of Relative Humidity on Arctic Aerosols |
title_full |
Effect of Relative Humidity on Arctic Aerosols |
title_fullStr |
Effect of Relative Humidity on Arctic Aerosols |
title_full_unstemmed |
Effect of Relative Humidity on Arctic Aerosols |
title_sort |
effect of relative humidity on arctic aerosols |
publisher |
The International Institute for Science, Technology and Education (IISTE) |
publishDate |
2014 |
url |
https://www.iiste.org/Journals/index.php/APTA/article/view/16320 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Advances in Physics Theories and Applications; Vol 36 (2014); 1-19 |
op_relation |
https://www.iiste.org/Journals/index.php/APTA/article/view/16320/16726 https://www.iiste.org/Journals/index.php/APTA/article/view/16320 |
_version_ |
1772179410848317440 |