The
Westward transport of mineral dust from the North Africa continent to Atlantic
Ocean can produce poor air quality, low visibilities, and negatively impacting
respiratory and cardiac health due to the optical and physical properties of
aerosols. The dynamical impact of the sea-breeze on the dust vertical
distribution in West Africa remains unknown. To investigate this issue, we have
used in-situ measurements from lidar. We have focused on the attenuated backscatter of
aerosols to study the effect of the local circulation on the vertical profile
of mineral dust at land-sea transition. The results highlight a strong diurnal
cycle of mineral dust associated with the nocturnal low-level jet (NLLJ). The
jet is located between 500 m and 1000 m and crucially affected by the dynamic
of the sea-breeze circulation.
References
[1]
D’almeida, G.A. (1986) A Model for Saharan Dust Transport. Journal of Climate and Applied Meteorology, 25, 903-916. https://doi.org/10.1175/1520-0450(1986)025<0903:AMFSDT>2.0.CO;2
[2]
Huneesus, N., Schulz, M., Balkanski, Y., Griesfeller, J., Kinne, S., Prospero, J., Bauer, S., Boucher, O., Chin, M., Dentener, F., Diehi, T., Easter, R., Fillmore, D., Ghan, S., Ginoux, P., Grini, A., Horowitz, L., Koch, D., Krol, M.C., Landing, W., Liu, X., Mahowald, N., Miller, R., Morcrette, J.J., Myhre, G., Penner, J.E., Perlwitz, J., Stier, P., Takemura, T. and Zender, C. (2010) Global Dust Model Intercomparison in AeroCom Phase I. Atmospheric Chemistry and Physics, 11, 7781-7816. https://doi.org/10.5194/acp-11-7781-2011
[3]
Andreae, M.O. (1996) Raising Dust in the Greenhouse. Nature, 380, 389. https://doi.org/10.1038/380389a0
[4]
Prospero, J.M. (2006) Saharan Dust Impacts and Climate Change. Oceanography, 19, 60. https://doi.org/10.5670/oceanog.2006.65
[5]
Griffin, D.W. (2007) Atmospheric Movement of Microorganisms in Clouds of Desert Dust and Implications for Human Health. Clinical Microbiology Reviews, 20, 459-477. https://doi.org/10.1128/CMR.00039-06
[6]
Martiny, N. and Chiapello, I. (2013) Assessments for the Impact of Mineral Dust on the Meningitis Incidence in West Africa. Atmospheric Environment, 70, 245-253. https://doi.org/10.1016/j.atmosenv.2013.01.016
[7]
Moulin, C. (1997) Transport atmosphérique des poussières africaines sur la Méditerranée et l’Atlantique: Climatologie satellitale à partir des images Météosat VIS (1983-1994) et relations avec le climat. 246 p. https://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14196812
[8]
Chiapello, I. and Moulin, C. (2002) TOMS and METEOSAT Satellite Records of the Variability of Saharan Dust Transport over the Atlantic during the Last Two Decades (1979-1997). Geophysical Research Letters, 29, 17-1-17-4. https://doi.org/10.1029/2001GL013767
[9]
Prospero, J.M. and Lamb, P.J. (2003) African Droughts and Dust Transport to the Caribbean: Climate Change Implications. Science, 302, 1024-1027. https://doi.org/10.1126/science.1089915
[10]
Mulitza, S., Heslop, D., Pittauerova, D., Fischer, H.W., Meyer, I., Stuut, J.-B., Zabel, M., Mollenhauer, G., Collins, J.A., Kuhnert, H. and Schulz, M. (2010) Increase in African Dust Flux at the Onset of Commercial Agriculture in the Sahel Region. Nature, 466, 226-228. https://doi.org/10.1038/nature09213
[11]
Pu, B. and Cook, K.H. (2010) Dynamics of the West African Westerly Jet. Journal of Climate, 23, 6263-6276. https://doi.org/10.1175/2010JCLI3648.1
[12]
Petzold, A., Veira, A., Mund, S., Esselborn, M., Kiemle, C., Weinzierl, B., Hamburger, T., Ehret, G., Lieke, K. and Kandler, K. (2011) Mixing of Mineral Dust with Urban Pollution Aerosol over Dakar (Senegal): Impact on Dust Physico-Chemical and Radiative Properties. Tellus B, 63, 619-634. https://doi.org/10.1111/j.1600-0889.2011.00547.x
[13]
Skakalova, T.S., Savov, P.B., Grigorov, I.V. and Kolev, I.N. (2003) Lidar Observation of Breeze Structure during the Transition Periods at the Southern Bulgarian Black Sea Coast. Atmospheric Environment, 37, 299-311. https://doi.org/10.1016/S1352-2310(02)00919-6
[14]
McKendry, I., Strawbridge, K. and Jones, A. (2011) Continuous 1064/532 nm Lidar Measurements (CORALNet-UBC) in Vancouver, British Columbia: Selected Results from a Year of Operation. Atmosphere-Ocean, 49, 32-40. https://doi.org/10.1080/07055900.2011.557799
[15]
Rivellini, L.H., Chiappelo, I., Tison, E., Fourmenti, M., Féron, A., Diallo, A., N’diaye, T., Goloub, P., Canonaco, F., Prévot, A.S.H. and Riffault, V. (2017) Chemical Characterization and Source Apportionment of Submicron Aerosols Measured in Senegal during the 2015 SHADOW Campaign. Atmospheric Chemistry and Physics, 17, 10291-10314. https://doi.org/10.5194/acp-17-10291-2017
[16]
Schepanski, K.I., Todd, M., Heinold, B., Bonisch, G., Laurent, B. and Macke, A. (2009) Meteorological Processes Forcing Saharan Dust Emission Inferred from MSG-SEVIRI Observations of Subdaily Dust Source Activation and Numerical Models. Journal of Geophysical Research: Atmospheres, 114, D10201. https://doi.org/10.1029/2008JD010325
[17]
Heese, B. and Wiegner, M. (2008) Vertical Aerosol Profiles from Raman Polarization Lidar Observations during the Dry Season AMMA Field Campaign. Journal of Geophysical Research: Atmospheres, 113, D00C11. https://doi.org/10.1029/2007JD009487
[18]
Diokhane, A.M., Jenkins, G.S., Manga, N., Drame, M.S. and Mbodji, B. (2016) Linkages between Observed, Modeled Saharan Dust Loading and Meningitis in Senegal during 2012 and 2013. International Journal of Biometeorology, 60, 557-575. https://doi.org/10.1007/s00484-015-1051-5
[19]
Choobari, O.A., Zawar-Reza, P. and Sturman, A. (2014) The Global Distribution of Mineral Dust and Its Impacts on the Climate System: A Review. Atmospheric Research, 138, 152-165. https://doi.org/10.1016/j.atmosres.2013.11.007
[20]
Cuesta, J., Marsham, J.H., Parker, D.J. and Flamant, C. (2009) Dynamical Mechanisms Controlling the Vertical Redistribution of Dust and the Thermodynamic Structure of the West Saharan Atmospheric Boundary Layer during Summer. Atmospheric Science Letters, 10, 34-42. https://doi.org/10.1002/asl.207
[21]
Guerrero-Rascado, J.L., Costa, M.J., Bortoli, D., Silva, A.M., Lyamani, H. and Alados-Arboledas, L. (2010) Infrared Lidar Overlap Function: An Experimental Determination. Optics Express, 18, 20350-20369. https://doi.org/10.1364/OE.18.020350
[22]
Tsaknakis, G., Papayannis, A., Kokkalis, P., Amiridis, V., Kambezidis, H., Mamouri, R., Georgoussis, G. and Avdikos, G. (2011) Inter-Comparison of Lidar and Ceilometer Retrievals for Aerosol and Planetary Boundary Layer Profiling over Athens, Greece. Atmospheric Measurement Techniques, 4, 1261-1273. https://doi.org/10.5194/amt-4-1261-2011
[23]
Munkel, C. and Rasanen, J. (2004) New Optical Concept for Commercial Lidar Ceilometers Scanning the Boundary Layer. Remote Sensing of Clouds and the Atmosphere IX, Volume 5571, 364-374. https://doi.org/10.1117/12.565540
[24]
Münkel, C., Eresmaa, N., Rasanen, J. and Karppinen, A. (2007) Retrieval of Mixing Height and Dust Concentration with Lidar Ceilometer. Boundary-Layer Meteorology, 124, 117-128. https://doi.org/10.1007/s10546-006-9103-3
[25]
Emeis, S., Schafer, K. and Münkel, C. (2008) Surface-Based Remote Sensing of the Mixing-Layer Height—A Review. Meteorologische Zeitschrift, 17, 621-630. https://doi.org/10.1127/0941-2948/2008/0312
Kaufman, Y., Tanré, D., Léon, J.F. and Pelon, J. (2003) Retrievals of Profiles of Fine and Coarse Aerosols Using Lidar and Radiometric Space Measurements. IEEE Transactions on Geoscience and Remote Sensing, 41, 1743-1754. https://doi.org/10.1109/TGRS.2003.814138
[28]
Cuesta, J., Edouart, D., Mimouni, M., Flamant, P.H., Loth, C., Gilbert, F., Marnas, F., Bouklila, A., Kharef, M., Ouchène, B., Kadi, M. and Flamant, C. (2008) Multiplatform Observations of the Seasonal Evolution of the Saharan Atmospheric Boundary Layer in Tamanrasset, Algeria, in the Framework of the African Monsoon Multidisciplinary Analysis Field Campaign Conducted in 2006. Journal of Geophysical Research: Atmospheres, 113, D00C07. https://doi.org/10.1029/2007JD009417
[29]
Eck, T.F., Holben, B.N., Reid, J.S., Mukelabai, M.M., Piketh, S.J., Torres, O., Jethva, H.T., Hyer, E.J., Ward, D.E., Dubovik, O., Sinyuk, A., Schafer, J.S., Giles, M.D., Sorokin, M., Smirnov, A. and Dubovik, O. (2013) A Seasonal Trend of Single Scattering Albedo in Southern African Biomass-Burning Particles: Implications for Satellite Products and Estimates of Emissions for the World’s Largest Biomass-Burning Source. Journal of Geophysical Research: Atmospheres, 118, 6414-6432. https://doi.org/10.1002/jgrd.50500
[30]
Adams, A.M., Prospero, J.M. and Zhang, C. (2012) CALIPSO-Derived Three-Dimensional Structure of Aerosol over the Atlantic Basin and Adjacent Continents. Journal of Climate, 25, 6862-6879. https://doi.org/10.1175/JCLI-D-11-00672.1
[31]
Hunt, W.H., Winker, D.M., Vaughan, M.A., Powell, K.A., Lucker, P.L. and Weimer, C. (2009) CALIPSO Lidar Description and Performance Assessment. Journal of Atmospheric and Oceanic Technology, 26, 1214-1228. https://doi.org/10.1175/2009JTECHA1223.1
[32]
Jenkins, G., Kucera, P., Joseph, E., Fuentes, J., Gaye, A., Gerlach, J., Roux, F., Viltard, N., Papazzoni, M., Protat, A., Bouniol, D., Reynolds, A., Arnault, J., Badiane, D., Kebe, F., Camara, M., Sall, S., Ndiaye, S.A. and Deme, A. (2010) Coastal Observations of Weather Features in Senegal during the African Monsoon Multidisciplinary Analysis Special Observing Period 3. Journal of Geophysical Research: Atmospheres, 115, D18108. https://doi.org/10.1029/2009JD013022
[33]
Ndoye, S., Capet, X., Estrade, P., Sow, B., Dagorne, D., Lazar, A., Gaye, A. and Brehmer, P. (2014) SST Patterns and Dynamics of the Southern Senegal-Gambia Upwelling Center. Journal of Geophysical Research: Oceans, 119, 8315-8335. https://doi.org/10.1002/2014JC010242
[34]
Weinzierl, B., Ansmann, A., Prospero, J.M., Althausen, D., Benker, N., Chouza, F., Dollner, M., Farrell, D., Fomba, W.K., Freudenthaler, J.M., Gasteiger, J., Grob, S., Haarig, M., Heinold, B., Kandler, K., Kristensen, T.B., Bracero, O.L.M., Muller, T., Reitebuch, O., Sauer, D., Schafler, A., Schepanski, K., Spanu, A., Tegen, I., Toledano, C. and Walser, A. (2017) The Saharan Aerosol Long-Range Transport and Aerosol-Cloud-Interaction Experiment: Overview and Selected Highlights. Bulletin of the American Meteorological Society, 98, 1427-1451. https://doi.org/10.1175/BAMS-D-15-00142.1
[35]
Doumbia, E.H.T. (2012) Caractérisation physico-chimique de la pollution atmosphérique en Afrique de l’Ouest et étude d’impact sur la santé. Doctoral Dissertation, Université de Toulouse, Université Toulouse III-Paul Sabatier.
[36]
Léon, J.-F., Derimian, Y., Chiapello, I., Tanré, D., Podvin, T., Chatenet, B., Diallo, A. and Deroo, C. (2009) Aerosol Vertical Distribution and Optical Properties over M’Bour (16.96 W 14.39 N), Senegal from 2006 to 2008. Atmospheric Chemistry and Physics, 9, 9249-9261. https://doi.org/10.5194/acp-9-9249-2009
[37]
Senghor, H., Machu, é., Hourdin, F. and Gaye, A.T. (2017) Seasonal Cycle of Desert Aerosols in Western Africa: Analysis of the Coastal Transition with Passive and Active Sensors. Atmospheric Chemistry and Physics, 17, 8395-8410. https://doi.org/10.5194/acp-17-8395-2017
[38]
Wu, X.F., Zhang, S.B., Gao, H., Wei, J.J., Zou, Y.C., Lei, W.H., Zhang, B., Dai, Z.G. and Mészaros, P. (2016) Constraints on the Photon Mass with Fast Radio Bursts. The Astrophysical Journal Letters, 822, L15. https://doi.org/10.3847/2041-8205/822/1/L15
[39]
Markowicz, K.M., Flatau, P.J., Kardas, A.E., Remiszewska, J., Stelmaszczyk, K. and Woeste, L. (2008) Ceilometer Retrieval of the Boundary Layer Vertical Aerosol Extinction Structure. Journal of Atmospheric and Oceanic Technology, 25, 928-944. https://doi.org/10.1175/2007JTECHA1016.1
[40]
Liu, H., Jacob, D.J., Bey, I. and Yantosca, R.M. (2001) Constraints from 210Pb and 7Be on Wet Deposition and Transport in a Global Three-Dimensional Chemical Tracer Model Driven by Assimilated Meteorological Fields. Journal of Geophysical Research: Atmospheres, 106, 12109-12128. https://doi.org/10.1029/2000JD900839
[41]
Pilon, R., Grandpeix, J.-Y. and Heinrich, P. (2015) Representation of Transport and Scavenging of Trace Particles in the Emanuel Moist Convection Scheme. Quarterly Journal of the Royal Meteorological Society, 141, 1244-1258. https://doi.org/10.1002/qj.2431
[42]
Bado, N., Ouédraogo, A., Guengané, H., Ky, T.S.M., Bazyomo, S.D., Korgo, B., Dramé, M.S., Sall, S.M., Kieno, F.P. and Bathiebo, D.J. (2019) Climatological Analysis of Aerosols Optical Properties by Airborne Sensors and in Situ Measurements in West Africa: Case of the Sahelian Zone. Open Journal of Air Pollution, 8, 118-135. https://doi.org/10.4236/ojap.2019.84007
[43]
Léon, J.-F., Pelon, J., Tanré, D., Kaufman, Y., Goloub, P., Haywood, J. and Chatenet, B. (2003) Profiling of a Saharan Dust Outbreak Based on a Synergy between Active and Passive Remote Sensing. Journal of Geophysical Research, 108, 8575. https://doi.org/10.1029/2002JD002774
[44]
Uddenfeldt Wort, U. (2007) An Analysis of Seasonality and Birth Outcomes in Highly Malarious Areas of Tanzania. Rozenberg Publishers, Amsterdam.
[45]
Dunion, J.P. and Marron, C.S. (2008) A Reexamination of the Jordan Mean Tropical Sounding Based on Awareness of the Saharan Air Layer: Results from 2002. Journal of Climate, 21, 5242-5253. https://doi.org/10.1175/2008JCLI1868.1
[46]
Wong, S., Dessler, A.E., Mahowald, Yang, P. and Feng, Q. (2009) Maintenance of Lower Tropospheric Temperature Inversion in the Saharan Air Layer by Dust and Dry Anomaly. Journal of Climate, 22, 5149-5162. https://doi.org/10.1175/2009JCLI2847.1
[47]
Tsamalis, C., Chédin, A., Pelon, J. and Capelle, V. (2013) The Seasonal Vertical Distribution of the Saharan Air Layer and Its Modulation by the Wind. Atmospheric Chemistry and Physics, 13, 11235-11257. https://doi.org/10.5194/acp-13-11235-2013
[48]
Carlson, T.N. and Prospero, J.M. (1972) The Large-Scale Movement of Saharan Air Outbreaks over the Northern Equatorial Atlantic. Journal of Applied Meteorology, 11, 283-297. https://doi.org/10.1175/1520-0450(1972)011<0283:TLSMOS>2.0.CO;2
[49]
Marticorena, B., Chatenet, B., Rajot, J.-L., Traoré, S., Coulibaly, M., Diallo, A., Koné, I., Maman, A., NDiaye, T. and Zakou, A. (2010) Temporal Variability of Mineral Dust Concentrations over West Africa: Analyses of a Pluriannual Monitoring from the AMMA Sahelian Dust Transect. Atmospheric Chemistry and Physics, 10, 8899-8915. https://doi.org/10.5194/acp-10-8899-2010
