Articles | Volume 18, issue 23
https://doi.org/10.5194/acp-18-17735-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-18-17735-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Dec 2018
Research article |
| 13 Dec 2018
| 13 Dec 2018
Angular scattering of the Sahara dust aerosol
Helmuth Horvath
CORRESPONDING AUTHOR
University of Vienna, Faculty of Physics, Aerosol Physics and
Environmental Physics, 1090 Vienna, Austria
Lucas Alados Arboledas
University of Granada, Department of Applied Physics, 18071 Granada,
Spain
Andalusian Institute for Earth System Research (IISTA-CEAMA), Granada,
Spain
Francisco José Olmo Reyes
University of Granada, Department of Applied Physics, 18071 Granada,
Spain
Andalusian Institute for Earth System Research (IISTA-CEAMA), Granada,
Spain
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Revised manuscript not accepted
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Gloria Titos, María A. Burgos, Paul Zieger, Lucas Alados-Arboledas, Urs Baltensperger, Anne Jefferson, James Sherman, Ernest Weingartner, Bas Henzing, Krista Luoma, Colin O'Dowd, Alfred Wiedensohler, and Elisabeth Andrews
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Juan Andrés Casquero-Vera, Hassan Lyamani, Lubna Dada, Simo Hakala, Pauli Paasonen, Roberto Román, Roberto Fraile, Tuukka Petäjä, Francisco José Olmo-Reyes, and Lucas Alados-Arboledas
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Atmospheric-aerosol and gaseous properties can be derived at night-time if the lunar irradiance at the ground is measured. To this end, the knowledge of lunar irradiance at the top of the atmosphere is necessary. This extraterrestrial lunar irradiance is usually calculated by models since it varies with several geometric factors mainly depending on time and location. This paper proposes a correction to the most used lunar-irradiance model to be applied for atmospheric-aerosol characterization.
Cited articles
Alfaro, S. C. and Gomez, L.: Modeling mineral aerosol production by wind erosion:
Emission intensities and aerosol size distribution in source areas, J. Geophys.
Res., 106, 18075–18084, 2001.
Alfaro, S. C., Gomez, L., Rajot, J. L., Lafon, S., Gaudichet, A., Chatenet,
B., Maille, M., Cautenet, G., Lasserre, F., Cachier, H., and Zhang, X. Y.:
Chemical and optical characterization of aerosols measured in spring 2002 at
the ACE-Asia supersite Zhenbeitai China, J. Geophys. Res., 108, 8641,
https://doi.org/10.1029/2002JD003214, 2003.
Andrews, E., Sheridan, P. J., Fiebig, M., McComiskey, A., Ogren, J. A.,
Arnott, P., Covert, D., Elleman, R., Gasparini, R., Collins, D., Jonsson, H.,
Schmid, B., and Wang, J.: Comparison of methods for deriving aerosol
asymmetry parameter, J. Geophys. Res., 111, D05S04, https://doi.org/10.1029/2004JD005734,
2006.
Ångström, A.: On the atmospheric transmission of sun radiation and on
dust in the atmosphere, Geogr. Ann., 11, 156–166, 1929.
Ångström, A.: On the atmospheric transmission of sun radiation II,
Geogr. Ann., 12, 130–159, 1930.
Antón, M., Valenzuela, A., Mateos, D., Alados, I., Foyo-Moreno, I., Olmo,
F. J., and Alados-Arboledas, L.: Longwave aerosol radiative effects during an
extreme desert dust event in southeastern Spain, Atmos. Res., 148, 18–23,
2014.
Charlson, R. J., Horvath, H., and Pueschel, R. F.: The direct measurement of
atmospheric light scattering coefficient for studies of visibility and
pollution, Atmos. Environ., 1, 469–478, 1967.
Cheng, T., Lu, D., Chen, H., and Xu, Y.: Physical characteristic of dust
aerosol over Husan Dake sandland in Northern China, Atmos. Environ., 39,
1237–1243, 2005.
Draxler, R. R. and Rolph, G. D.: HYSPLIT (HYbrid Single-Particle Lagrangian
Integrated Trajectory) Model access via NOAAARL READY Website, available at:
http://www.arl.noaa.gov/ready/hysplit4.html (last access:
30 November 2018), NOAA Air Resources Laboratory, Silver Spring, MD, 2003.
Estellés, V., Martínez-Lozano, J. A., and Utrillas, M. P.: Influence
of air mass history on the columnar aerosol properties at Valencia, Spain, J.
Geophys. Res., 112, D15211, https://doi.org/10.1029/2007JD008593, 2007.
Falkovich, A. H., Gomez, E., Lewin, Z., Formenti, P., and Rudich, Y.:
Analysis of individual dust particles, J. Geophys. Res., 29, 18029–18036,
2001.
Formenti, P., Andreae, M. O., Lange, L., Roberts, G., Cafmeyer, J., Rajta,
I., Maenhaut, W., Holben, B. N., Artaxo, P., and Lelieveld, J.: Saharan dust
in Brazil and Suriname during the Large-Scale Biosphere–Atmosphere
Experiment in Amazonia (LBA) – Cooperative LBA Regional Experiment (CLAIRE)
in March 1998, J. Geophys. Res., 106, 4871–4890, https://doi.org/10.1029/2000JD900556,
2001.
Hinds, W. C.: Aerosol technology: Properties, behavior, and measurement of
airborne particles, 2nd Edn., New York, John Wiley & Sons, 483 pp., 1999.
Horvath, H.: Extrapolation of a truncated aerosol volume scattering function
to the far forward and back region, J. Aerosol Sci.,
https://doi.org/10.1016/j.jaerosci.2015.08.001, 2015.
Horvath, H., Kasahara, M., Tohno, S., Olmo, F. J., Lyamani, H.,
Alados-Arboledas, L., Quirantes, A., and Cachorro, V.: Relationship between
fraction of backscattered light and asymmetry parameter J. Aerosol Sci., 91,
43–53, https://doi.org/10.1016/j.jaerosci.2015.09.003, 2016.
Iwasaka, Y., Shi, G.-Y., Yamada, M., Matsuki, A., Trochkine, D., Kim, Y. S.,
Zhang, D., Nagatani, T., Shibata, T., Nagatani, M., Nakata, H., Shen, Z., Li,
G., and Chen, B.: Importance of dust particles in the free troposphere over
the Taklaman desert: Electron microscopic experiments of particles collected
with a baloonborne particle impactor at Dunhunag, China, J. Geophys. Res.,
108, 8644, https://doi.org/10.1029/2002JD003270, 2003.
Jaenicke, R.: Aerosol Physics and Chemistry in Zahlenwerte und Funktionen aus
Naturwissenschaft und Technik, Landolt Börnstein, Group 5 (Vol. 4,
subvolume b), Physikalische und chemische Eigenschaften der Luft. Berlin,
Germany, Springer, 1988.
Junge, C. E.: Air chemistry and radioactivity, Academic Press, New York,
1963.
Junge, Ch.: The importance of mineral dust as an atmospheric constituent,
chap. 2, in: Saharan Dust; mobilization, transport, deposition, edited by:
Morales, C., Chichester, John Wiley & Sons, 49–60, 1979.
Kandler, K., Benker, N., Bundke, U., Cuevas, E., Ebert, M., Knippertz, E.,
Rodríguez, S., Schütz, L., and Weinbruch, S.: Chemical composition
and complex refractive index of Saharan Mineral Dust at Izana, Tenerife
(Spain) derived by electron microscopy, Atmos. Environ., 41 8058–8074, 2007.
Kandler, K. Lieke, K. Benker, N. Emmel, C., Küpper, M., Müller-Ebert,
D. Ebert, M., Scheuvens, D., Schladitz, A., Schütz, L., and Weinbruch,
S.: Electron microscopy of particles collected at Praia, Cape Verde, during
the Saharan Mineral Dust Experiment: particle chemistry, shape, mixing state
and complex refractive index, Tellus B, 63, 475–496, 2011.
Kocifaj, M. and Horvath, H.: On re-evaluation of quondam dust trend in the
middle atmosphere, Appl. Optics, 44, 7378–7393, 2005.
Kontratyev, K. Ya., Ivlev, L. S., Krapivin, V. F., and Varostos, C. A.:
Atmospheric aerosol properties, Formation, processes, impacts, Berlin,
Springer, p. 141, 2006.
Kok, J. F., Ridley, D. A., Zhou, Q., Miller, R. L., Zhao, C., Heald, C. L.,
Ward, D. S., Albani, S., and Haustein, K.: Smaller desert dust cooling effect
estimated from analysis of dust size and abundance, Nat. Geosci., 10,
274–278, 2017.
Lindqvist, H., Jokinen, O., Kandler, K., Scheuvens, D., and Nousiainen, T.:
Single scattering by realistic, inhomogeneous mineral dust particles with
stereogrammetric shapes, Atmos. Chem. Phys., 14, 143–157,
https://doi.org/10.5194/acp-14-143-2014, 2014.
Mishchenko, M. I., Travis, L. D., Kahn, R. A., and West, R. A.: Modeling
phase functions for dustlike tropospheric aerosols using a shape mixture of
randomly oriented polydisperse spheroids, J. Geophys. Res., 102,
16831–16847, 1997.
Mishchenko, M. I., Hovenier, J. W., and Travis, L. D. (Eds.): Light
scattering by non-spherical particles, theory, measurements and applications,
Academic Press, San Diego, 690 pp., 2000.
Nousiainen, T. and Kandler, K.: Light scattering by atmospheric mineral dust
particles, in: Light Scattering Reviews 9: Light Scattering and Radiative
Transfer, edited by: Kokhanovsky, A., 3–52, Praxis Books, Springer,
Chichester, 2015.
Obregón, M. A., Pereira, S., Salgueiro, V., Costa, M. J., Silva, A. M.,
Serrano, A., and Bortoli, D.: Aerosol radiative effects during two desert
dust events in August 2012 over the Southwestern Iberian Peninsula, Atmos.
Res., 153, 404–415, https://doi.org/10.1016/j.atmosres.2014.10.007, 2015.
Okin, G. S., Mahowald, N., Chadwick, O. A., and Artaxo, P.: Impact of desert
dust on the biogeochemistry of phosphorus in terrestrial ecosystems, Global
Biogeochem. Cy., 18, GB2005, https://doi.org/10.1029/2003GB002145, 2004.
Valenzuela, A., Olmo, F. J., Lyamani, H., Antón, M., Quirantes, A., and
Alados-Arboledas, L.: Aerosol radiative forcing during African desert dust
events (2005–2010) over Southeastern Spain, Atmos. Chem. Phys., 12,
10331–10351, https://doi.org/10.5194/acp-12-10331-2012, 2012a.
Valenzuela, A., Olmo, F. J., Lyamani, H., Antón, M., Quirantes, A., and
Alados-Arboledas, L.: Classification of aerosol radiative properties during
African desert dust intrusions over southeastern Spain by sector origins and
cluster analysis, J. Geophys. Res., 117, D06214, https://doi.org/10.1029/2011JD016885,
2012b.
Von Hoyningen-Huene, W. and Posse, P.: Nonsphericity of aerosol particles and
their contribution to radiative forcing, J. Quant. Spectrosc. Ra., 57,
651–668, 1997.
Waldram, J. M.: Measurement of the photometric properties of the upper
atmosphere, Trans. Illum. Eng. Soc., 10, 147–188, 1945.
Xin, J., Wang, S., Wang, Y., Yuan, J., Zhang, W., and Sun, Y.: Optical
properties and size distribution of dust aerosols over the Tengger Desert in
Northern China, Atmos. Environ., 39, 5971–5978, 2005.
Zender, C. S., Miller, R. L., and Tegen, I.: Quantifying Mineral Dust Mass
Budgets:Terminology, Constraints, and Current Estimates, EOS, 85, 509–512,
2004.
Short summary
Scattering properties of the atmospheric aerosol were measured in the Sierra Nevada with a custom-built polar nephelometer; scattering coefficient, phase function, asymmetry parameter, and backscattered fraction have been derived. Phase function and asymmetry parameter of the Sahara aerosol differ significantly from the usual aerosol. The asymmetry parameter permits distinction between Sahara and non-Sahara aerosol. Gobi desert aerosol scattering is similar to that of the Sahara.
Scattering properties of the atmospheric aerosol were measured in the Sierra Nevada with a...
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