Aerosol particle concentration and size distribution measurements and modeling in the urban environment for semi-arid and rainy atmospheric conditions

Various experiments have been carried out recently in the Middle East urban (Beer Sheva, Israel) environment for prediction of aerosol particle concentration and size distribution. During these experiments aerosol particle concentrations for different weather conditions were measured and analyzed. This work proposes a new model for urban aerosol size distribution prediction based on an extensive series of measurements. The model introduces coefficients and characteristics of processes of absorption and scattering by aerosol particles in the urban inhomogeneous region for semi-arid and rainy atmospheric conditions. Several parts of the results are compared with those obtained through measurements in different geographic and climatic environments, as well as with different aerosol distribution models. It is shown that, in Middle East urban regions, larger differences in aerosol particle concentration are observed. Effects of different atmospheric conditions for urban aerosol modeling are better described by the model proposed in this work using parameters obtained empirically.

[1]  F. Torricella,et al.  Atmospheric aerosol optical properties: a database of radiative characteristics for different components and classes. , 1997, Applied optics.

[2]  Frédéric Bouchara,et al.  Development of the Mediterranean extinction code (MEDEX) , 2003 .

[3]  A. Zangvil.  Six years of dew observations in the Negev Desert, Israel , 1996 .

[4]  Michel L. Autric,et al.  Correlation between the aerosol profiles measurements, the meteorological conditions, and the atmospheric IR transmission in a mediterranean marine atmosphere , 1991, Defense, Security, and Sensing.

[5]  N. Kopeika,et al.  Middle East measurements of concentration and size distribution of aerosol particles for coastal zones , 2005 .

[6]  Stuart G. Gathman,et al.  Optical Properties Of The Marine Aerosol As Predicted By The Navy Aerosol Model , 1983 .

[7]  T. Zieliński,et al.  Aerosol extinction and aerosol optical thickness in the atmosphere over the Baltic Sea determined with lidar , 2002 .

[8]  K. T. Whitby.  THE PHYSICAL CHARACTERISTICS OF SULFUR AEROSOLS , 1978 .

[9]  S. Fuzzi,et al.  Precipitation scavenging coefficient: influence of measured aerosol and raindrop size distributions , 2000 .

[10]  Kaarle Hämeri,et al.  Effects of meteorological processes on aerosol particle size distribution in an urban background area , 2000 .

[11]  G. Leeuw,et al.  Production of sea spray aerosol in the surf zone , 2000 .

[12]  Kenneth L. Davidson,et al.  Electro-optical propagation assessment in coastal environments (EOPACE): summary and accomplishments , 2001 .

[13]  Natan S. Kopeika,et al.  Influence of sea-breeze winds on aerosol particle concentration and size distribution for up to 50-km overland distances in the Middle East , 2005, SPIE Defense + Commercial Sensing.

[14]  J. W. Fitzgerald.  On the Growth of Aerosol Particles with Relative Humidity. , 1978 .

[15]  K L Davidson,et al.  The Navy Oceanic Vertical Aerosol Model , 1993 .

[16]  A. Berk.  MODTRAN : A moderate resolution model for LOWTRAN7 , 1989 .

[17]  K. Moorthy,et al.  Aerosol mass-size distributions at a tropical coastal environment: response to mesoscale and synoptic processes , 2001 .

[18]  Norman S. Kopeika,et al.  Aerosol models for Middle East coastal zones: a modified NAM model , 2004, SPIE LASE.

[19]  Some observations of the influence of meteorological variables on the size distribution of natural aerosol particles , 1982 .

[20]  Norman S. Kopeika,et al.  Effects of attenuation of 1.064-μm optical waves by humid aerosols and fog over horizontal atmospheric communication links , 2004 .

[21]  Christopher W. Fairall,et al.  Meteorological Models For Optical Properties In The Marine Atmospheric Boundary Layer , 1982 .

[22]  Christopher W. Fairall,et al.  Observed inter-relations between 10m winds, ocean whitecaps and marine aerosols , 1983 .

[23]  K. Krishna Moorthy,et al.  Influence of Changes in the Prevailing Synoptic Conditions on the Response of Aerosol Characteristics to Land- and Sea-Breeze Circulations at a Coastal Station , 2003 .

[24]  Gerrit de Leeuw,et al.  Extension of the Navy aerosol model to coastal areas , 2000 .

[25]  Jacques Piazzola,et al.  Vertical variation of extinction and atmospheric transmission due to aerosol particles close above the sea surface in the Mediterranean coastal zone , 1998 .

[26]  N. O'Neill,et al.  A study of the link between synoptic air mass type and atmospheric optical parameters , 1994 .