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Discussion papers | Copyright
https://doi.org/10.5194/acp-2018-276
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 16 Apr 2018

Research article | 16 Apr 2018

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This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Analyzing the turbulence in the Planetary Boundary Layer by the synergic use of remote sensing systems: Doppler wind lidar and aerosol elastic lidar

Gregori de Arruda Moreira1,2,3, Juan Luís Guerrero-Rascado1,2, Jose Antonio Benavent-Oltra1,2, Pablo Ortiz-Amezcua1,2, Roberto Román1,2,4, Andrés Esteban Bedoya-Velásquez1,2,5, Juan Antonio Bravo-Aranda1,2, Francisco Jose Olmo-Reyes1,2, Eduardo Landulfo3, and Lucas Alados-Arboledas1,2 Gregori de Arruda Moreira et al.
  • 1Andalusian Institute for Earth System Research (IISTA-CEAMA), Granada, Spain
  • 2Dpt. Applied Physics, University of Granada, Granada, Spain
  • 3Institute of Research and Nuclear Energy (IPEN), São Paulo, Brazil
  • 4Grupo de Óptica Atmosférica (GOA), Universidad de Valladolid, Valladolid, Spain
  • 5Sciences Faculty, Department of Physics, Universidad Nacional de Colombia, Medellín, Colombia

Abstract. The Planetary Boundary Layer (PBL) is the lowermost region of troposphere and endowed with turbulent characteristics, which can have mechanical or thermodynamic origins. Such behavior gives to this layer great importance, mainly in studies about pollutant dispersion and weather forecasting. However, the instruments usually applied in studies about turbulence in the PBL have limitations in spatial resolution (anemometer towers) or temporal resolution (aircrafts). In this study we propose the synergetic use of remote sensing systems (microwave radiometer [MWR], Doppler lidar [DL] and elastic lidar [EL]) to analyze the PBL behavior. Furthermore, we show how some meteorological variables such as air temperature, aerosol number density, vertical wind, relative humidity and net radiation might influence the PBL dynamic. The statistical moments of the high frequency distributions of the vertical velocity, derived from DL and of the backscattered coefficient derived from EL, are corrected by two methodologies, namely first lag and −2/3 correction. The corrected profiles present small differences when compare against the uncorrected profiles, showing low influence of noise and the viability of the proposed methodology. Two case studies were analyzed in detail, one corresponding to a well-defined PBL and another one corresponding to a situation with presence of a Saharan dust lofted aerosol layer and clouds. In both cases the results provided by the different instruments are complementary, thus the synergistic use of the different systems allow us performing a detailed monitoring of the PBL.

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In this study we propose the synergetic use of remote sensing systems to analyze the Planetary Boundary Layer (PBL) behavior. Furthermore, we show how some meteorological variables such as air temperature, aerosol number density, vertical wind, relative humidity and net radiation might influence the PBL dynamic. The results provided by the different instruments are complementary, thus the synergistic use of the different systems allow us performing a detailed monitoring of the PBL.
In this study we propose the synergetic use of remote sensing systems to analyze the Planetary...
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