Regional Saharan dust modelling during the SAMUM 2006 campaign

Bernd Heinold; Ina Tegen; Michael Esselborn; Konrad Kandler; Peter Knippertz; Detlef Müller; Alexander Schladitz; Matthias Tesche; Bernadett Weinzierl; Albert Ansmann; Dietrich Althausen; Benoit Laurent; Andreas Massling; Thomas Müller; Andreas Petzold; Kerstin Schepanski; Alfred Wiedensohler

doi:10.1111/j.1600-0889.2008.00387.x

Regional Saharan dust modelling during the SAMUM 2006 campaign

Tellus B: Chemical and Physical Meteorology

Volume 61 (2009): Issue 1

By: Bernd Heinold, Ina Tegen, Michael Esselborn, Konrad Kandler, Peter Knippertz, Detlef Müller, Alexander Schladitz, Matthias Tesche, Bernadett Weinzierl, Albert Ansmann, Dietrich Althausen, Benoit Laurent, Andreas Massling, Thomas Müller, Andreas Petzold, Kerstin Schepanski and Alfred Wiedensohler

Open Access

|Jan 2009

Abstract

The regional dust model system LM-MUSCAT-DES was developed in the framework of the SAMUM project. Using the unique comprehensive data set of near-source dust properties during the 2006SAMUMfield campaign, the performance of the model system is evaluated for two time periods in May and June 2006. Dust optical thicknesses, number size distributions and the position of the maximum dust extinction in the vertical profiles agree well with the observations. However, the spatio-temporal evolution of the dust plumes is not always reproduced due to inaccuracies in the dust source placement by the model. While simulated winds and dust distributions are well matched for dust events caused by dry synoptic-scale dynamics, they are often misrepresented when dust emissions are caused by moist convection or influenced by small-scale topography that is not resolved by the model. In contrast to long-range dust transport, in the vicinity of source regions the model performance strongly depends on the correct prediction of the exact location of sources. Insufficiently resolved vertical grid spacing causes the absence of inversions in the model vertical profiles and likely explains the absence of the observed sharply defined dust layers.

References

Althausen , D. , Muller , D. , Ansmann , A. , Wandinger , U. , Hube , H. and co-authors. 2000. Scanning 6-wavelength 11-channel aerosol lidar. J. Atmos. Oceanic TechnoL 17 , 1469 – 1482 .
Search in Google Scholar Back to article
Berge , E . 1997 . Transboundary air pollution in Europe . In: MSC-W Status Report 1997, Part 1 and 2, EMEP/MSC-W Report 1/97 , The Norwegian Meteorological Institute , Oslo .
Search in Google Scholar Back to article
Doms , G. and Schättler , U . 2002 . A Description of the Nonhydrostatic Regional Model LM . Tech. Rep. Part I: dynamics and Numerics , De utscher Wetterdienst, Deutscher Wetterdienst, Offenbach, Ger-many . Available at http : //www.cosmo-model.org/ .
Search in Google Scholar Back to article
Esselborn , M. , Wirth , M. , Fix , A. , Weinzierl , B. , Rasp , K. and co-authors. 2008. Spatial distribution and optical properties of Saharan dust ob-served by airborne high spectral resolution lidar during SAMUM 2006. Tellus 61B, 10.1111/j.1600-0889.2008.00394.x .
Open DOI Search in Google Scholar Back to article
Heinold , B. , Helmert , J. , Hellmuth , O. , Wolke , R. , Ansmann , A. and co-authors. 2007. Regional modeling of Saharan dust events using LM-MUSCAT: Model description and case studies. J. Geophys. Res . 112 , D11204, 10.1029/2006JD007443 .
Open DOI Search in Google Scholar Back to article
Heintzenberg , J . 2008. The SAMUM-1 experiment over Southern Mo-rocco: overview and introduction. Tellus 61B, 10.1111/j.1600-0889.2008.00403.x .
Open DOI Search in Google Scholar Back to article
Helmert , J. , Heinold , B. , Tegen , I. , Hellmuth , O. and Wendisch , M. 2007. On the direct and semi-direct effect of Saharan dust over Europe: A modeling study. J. Geophys. Res . 112 , D11204, 10.1029/2006JD007444 .
Open DOI Search in Google Scholar Back to article
Holben , B. N. , Eck , T. F. , Slutsker , I. , Tanre , D. , Buis , J. P. and co-authors. 1998. AERONET—a federated instrument network and data archive for aerosol characterisation. Remote Sens. Environ. 66, 1 – 16.
Search in Google Scholar Back to article
IPCC 2007 . Climate Change 2007: the Physical Science Basis . Contri-bution of Working Group I to the Forth Assessment Report of the Intergovernmental Panel on Climate Change (eds S. Solomon and co-editors), Cambridge University Press , New York .
Search in Google Scholar Back to article
Jalcobson , H. A. , Jonson , J. E. and Berge , E . 1997 . The multi-layer Eulerian model: model description and evaluation of transboundary fluxes of sulphur and nitrogen species for one year . EMEP/MSC-W Note 2/97 , The Norwegian Meteorological Institute , Oslo .
Search in Google Scholar Back to article
Kandler , K. , Schiitz , L. , Deutscher , C. , Ebert , M. , Hofmann , H. and co-authors. 2008. Size distribution, mass concentration, chemical and mineralogical composition, and derived optical parameters of the boundary layer aerosol at Tinfou, Morocco, during SAMUM 2006. Tellus 61B, doi: 10.1111/j.1600-0889. 2008.00385. x.
Open DOI Search in Google Scholar Back to article
Knippertz , P. , Deutscher , C. , Kandler , K. , Muller , T. , Schulz , O. and co-authors. 2007. Dust mobilization due to density currents in the Atlas region: Observations from the Saharan Mineral Dust Experiment 2006 field campaign. J. Geophys. Res . 112 , D21109, 10.1029/2007JD008774 .
Open DOI Search in Google Scholar Back to article
Knippertz , R , Ansmann , A. , Althausen , D. , Muller , D. , Tesche , M. and co-authors. 2008. Dust Mobilization and Transport in the Northern Sahara during SAMUM 2006—A Meteorological Overview. Tellus 61B, 10.1111/j.1600-0889.2008.00380.x .
Open DOI Search in Google Scholar Back to article
Knoth , O. and Wolke , R. 1998. Implicit-explicit Runge-Kutta methods for computing atmospheric reactive flow. AppL Num. Math. 28, 327 – 341.
Search in Google Scholar Back to article
Lacis , A. A. and Mishchenlco , M. I . 1995. Climate forcing, climate sensitivity, and climate response: a radiative modeling perspective on atmospheric aerosols. In: Aerosol Forcing of Climate: Report of the Dahlem Workshop on Aerosol Forcing of Climate (eds J. R. Charlson and J. Heintzenberg), John Wiley, Hoboken, 11 – 42.
Search in Google Scholar Back to article
Levelt , R. F . 2002 . OM II Algorithm Theoretical Basis Document Volume 1: OMI Instrument, Level 0-lb processor, calibration & operations, technical report . NASA Goddard Space Flight Center, Greenbelt , Md .
Search in Google Scholar Back to article
Majewski , D. , Liermann , D. , Prohl , P. , Ritter , B. , Buchhold , M. and co-authors. 2002, The operational global icosahedral-hexagonal grid-point model GME: Description and high-resolution tests. Mon. Wea. Rev. 130(2), 319 – 338.
Search in Google Scholar Back to article
Marticorena , B. and Bergametti , G . 1995 , Modeling the atmospheric dust cycle: 1. Design of a soil-derived dust emission scheme. J . Geophys. Res . 100 , 16 415 – 16430 .
Search in Google Scholar Back to article
Marticorena , B. , Chazette , P. , Bergametti , G. , Dulac , F. and Legrand , M . 2004 . Mapping the aerodynamic roughness length of desert surfaces from the POLDER/ADEOS bi-directional reflectance product . Int. J. Remote Sens . 25 , 603 – 626 .
Search in Google Scholar Back to article
Miller , R. L. , Perlwitz , J. and Tegen , I . 2004 . Feedback upon dust emis-sion by dust radiative forcing through the planetary boundary layer . J. Geophys. Res . 109 ( 024 ), D24209 , 10.1029/2004JD004912 .
Open DOI Search in Google Scholar Back to article
Muller , D. , Heinold , B. , Tesche , M. , Tegen , I. , Althausen , D. and co-authors. 2008a. EARLINET observations of the 14-22-May long-range dust transport event during SAMUM 2006: Validation of re-sults from dust transport modelling. Tellus 61B, 10.1111/j.1600-0889. 2008.00400. x.
Open DOI Search in Google Scholar Back to article
Muller , T. , Schladitz , A. , Massling , A. , Kaaden , N. , Wiedensohler , A. and co-authors. 2008b. Spectral absorption coefficients and imaginary parts of refractive index of Saharan dust during SAMUM-1. Tellus 61B, 10.1111/j.1600-0889.2008.00399.x .
Open DOI Search in Google Scholar Back to article
Myhre , G. , Grini , A. , Haywood , J. M. , Stordal , F. , Chatenet , B. , Tanre , D. , Sundet , J. K. and Isalcsen , IS. A . 2003 . Modeling the radiative impact of mineral dust during the Saharan Dust Experiment (SHADE) cam-paign . J. Geophys. Res . 108 ( 018 ), 8579 , 10.1029/2002JDO02566 .
Open DOI Search in Google Scholar Back to article
Petzold , A. , Rasp , K. , Weinzierl , B. , Esselborn , M. , Hamburger , T. and co-authors. 2008. Saharan dust absorption and refractive index from aircraft-based observations during SAMUM 2006. Tellus 61B, 10.1111/j.1600-0889.2008.00383.x .
Open DOI Search in Google Scholar Back to article
Prospero , J. M. , Ginoux , R , Tones , O. , Nicholson , S. E. and Gill , T. E. 2002. Environmental characterization of global sources of atmo-spheric soil dust identified with the Nimbus 7 Total Ozone Map-ping Spectrometer (TOMS) absorbing aerosol product. Rev. Geophys. 40(1), 1002, 10.1029/2000RG000095 .
Open DOI Search in Google Scholar Back to article
Ritter , B. and Geleyn , J. F . 1992 . A comprehensive radiation scheme for numerical weather prediction models with potential applications in climate simulations . Mon. Wea. Rev . 120 , 303 – 325 .
Search in Google Scholar Back to article
Schepanslci , K. , Tegen , I. , Laurent , B. , Heinold , B. and Macke , A . 2007 . A new Saharan dust source activation frequency map derived from MSG-SEVIRI IR-channels . Geophys. Res. Lett . 34 , L18803 , 10.1029/2007GL030168 .
Open DOI Search in Google Scholar Back to article
Schladitz , A. , Muller , T. , Kaaden , N. , Massling , A. , Kandler , K. and co-authors. 2008. In situ measurements of Optical Properties at Tinfou (Morocco) during the Saharan Mineral Dust Experiment SAMUM 2006. Tellus 61B, 10.1111/j.1600-0889.2008.00397.x .
Open DOI Search in Google Scholar Back to article
Schmetz , J. , Pili , P. , Tjemkes , S. , Just , D. , Kerkmann , J. and co-authors. 2002. An introduction to Meteosat Second Generation (MSG). Bull. Amer Meteor. Soc. 83, 977 – 992.
Search in Google Scholar Back to article
Schiitz , L. , Ruprecht , J. and Pietrek , H . 1981 . Saharan dust transport over the North Atlantic Ocean . Geol. Soc. Am. Special Paper 186 , 87 – 100 .
Search in Google Scholar Back to article
Sinyuk , A. , Tones , O. and Dubovilc , O. 2003. Combined use of satel-lite and surface observations to infer the imaginary part of re-fractive index of Saharan dust. Geophys. Res. Lett. 30(2), 1081, 10.1029/2002GL016189 .
Open DOI Search in Google Scholar Back to article
Speth , P. and Dielckrüger , B. (Eds.), 2006. An integrated approach to the efficient management of scarce water resources in West Africa-case studies for selected river catchments in different climate zones. In: Second Final Report, Period: 01.05.2003-31.07.2006, Institute for Geophysics and Meteorology, University of Cologne, Germany.
Search in Google Scholar Back to article
Sokolilc , I. N. and Toon , O. B. 1996. Direct radiative forcing by anthro-pogenic airborne mineral aerosols. Nature 381, 681 – 683.
Search in Google Scholar Back to article
Sokolilc , I. N. and Toon , O. B. 1999. Incorporation of mineralogi-cal composition into models of the radiative properties of mineral aerosol from UV to IR wavelengths. J. Geophys. Res . 104 , 9423 – 9444.
Search in Google Scholar Back to article
Tanre , D. , Geleyn , J.E and Slingo , J. M. 1984. First results of the intro-duction of an advanced aerosol-radiation interaction in the ECMWF low resolution global model. In: Aerosols and Their Climatic Effects (eds H. E. Gerber and A. Deepak), A. Deepak), Hampton, Va., 133 – 177.
Search in Google Scholar Back to article
Tegen , I. , Harrison , S. P. , Kohfeld , K. , Prentice , I. C. , Coe , M and co-authors. 2002. Impact of vegetation and preferential source areas on global dust aerosol: results from a model study. J. Geophys. Res . 107(021), 4576, 10.1029/2001JD000963 .
Open DOI Search in Google Scholar Back to article
Tegen , I. , Heinold , B. , Todd , M. , Helmert , J. , Washington , R. and co-authors. 2006. Modelling soil dust aerosol in the Bodelé depression during the BoDEx campaign. Atmos. Chem. Phys. 6, 4171 – 4211.
Search in Google Scholar Back to article
Tesche , M. , Ansmann , A. , Muller , D. , Althausen , D. , Mattis , I. and co-authors. 2008. Vertical profiling of Saharan dust with Raman lidars and airborne HSRL in southern Morocco during SAMUM. Tellus 61B, 10.1111/j.1600-0889.2008.00390.x .
Open DOI Search in Google Scholar Back to article
Tiedtke , M . 1989 . A comprehensive mass flux scheme for cumulus parameterisation in large-scale models . Mon. Wea. Rev . 117 , 1779 – 1799 .
Search in Google Scholar Back to article
Washington , R. , Todd , M. C. , Middleton , N. J. and Goudie , A. S. 2003. Dust-storm source areas determined by the Total Ozone Monitoring Spectrometer and surface observations. Ann. Assoc. Am. Geogr 93, 297 – 313.
Search in Google Scholar Back to article
Weinzierl , B. , Petzold , A. , Esselborn , M. , Wirth , M. , Rasp , K. and co-authors. 2008. Airborne measurements of dust layer properties, parti-cle size distribution and mixing state of Saharan dust during SAMUM 2006. Tellus 61B, 10.1111/j.1600-0889.2008.00392.x .
Open DOI Search in Google Scholar Back to article
Wolke , R. and Knoth , O. 2000. Implicit-explicit Runge-Kutta meth-ods applied to atmospheric chemistry-transport modelling. Environ. Model. Softw. 15, 711 – 719.
Search in Google Scholar Back to article
Wolke , R. , Hellmuth , O. , Knoth , O. , Schröder , W. , Heinrich , B. and co-authors. 2004a. The chemistry-transport modeling system LM-MUSCAT: Description and CityDelta applications. In: Air Pollution Modeling and Its Application XVI (eds C. Borrego and S. Ince-cilc), Proceedings of twenty-sixth NATO/CCMS international tech-nical meeting on air pollution modeling and its application, Kluver Academic/Plenum Publishers, New York.
Search in Google Scholar Back to article
Wolke , R. , Hellmuth , O. , Knoth , O. , Schröder , W. and Renner , E. 2004b. The parallel model system LM-MUSCAT for chemistry-transport simulations: Coupling scheme, parallelization and application. In: Parallel Computing: Software Technology, Algorithms, Architectures, and Applications, (eds G. R. Joubert, W. E. Nagel, F. J. Peters and W. V. Walter), Advanced in Parallel Computing, Elsevier, the Nether-lands, 363 – 370.
Search in Google Scholar Back to article
Yoshioka , M. , Mahowald , N. , Conley , A. J. , Collins , W. D. , Fillmore , D. W. and co-authors. 2007. Impact of desert dust radiative forcing on Sahel precipitation: relative importance of dust compared to sea surface temperature variations, vegetation changes, and greenhouse gas warming. J. Climate 20(8) , 1445 – 1467.
Search in Google Scholar Back to article
Zender , C. , Newman , D. S. and Tones O. 2003. Spatial hetero-geneity in aeolian erodibility: Uniform, topographic, geomorphic, and hydrologic hypotheses. J. Geophys. Res . 108 ( D17 ), 4543, 10.1029/2002JD003039 .
Open DOI Search in Google Scholar Back to article
Zhang , L. , Gong , S. , Padro , J. and Barrie , L . 2001 . A size-segregated particle dry deposition scheme for an atmospheric aerosol module . Atmos. Environ . 35 , 549 – 560 .
Search in Google Scholar Back to article
Zobler , L . 1986. A world soil file for global climate modeling. In: NASA Technical Memorandum 87802, 32 pp., NASA, Washington, DC.
Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.1111/j.1600-0889.2008.00387.x | Journal eISSN: 1600-0889

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Language: English

Page range: 307 - 324

Submitted on: Jan 8, 2008

Accepted on: Aug 11, 2008

Published on: Jan 1, 2009

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 2009 Bernd Heinold, Ina Tegen, Michael Esselborn, Konrad Kandler, Peter Knippertz, Detlef Müller, Alexander Schladitz, Matthias Tesche, Bernadett Weinzierl, Albert Ansmann, Dietrich Althausen, Benoit Laurent, Andreas Massling, Thomas Müller, Andreas Petzold, Kerstin Schepanski, Alfred Wiedensohler, published by Stockholm University Press
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Volume 61 (2009): Issue 1