Analyzing the turbulent planetary boundary layer by remote sensing systems: the Doppler wind lidar, aerosol elastic lidar and microwave radiometer
-
Published:2019-01-31
Issue:2
Volume:19
Page:1263-1280
-
ISSN:1680-7324
-
Container-title:Atmospheric Chemistry and Physics
-
language:en
-
Short-container-title:Atmos. Chem. Phys.
Author:
de Arruda Moreira GregoriORCID, Guerrero-Rascado Juan LuisORCID, Benavent-Oltra Jose A.ORCID, Ortiz-Amezcua Pablo, Román RobertoORCID, E. Bedoya-Velásquez Andrés, Bravo-Aranda Juan AntonioORCID, Olmo Reyes Francisco Jose, Landulfo Eduardo, Alados-Arboledas LucasORCID
Abstract
Abstract. The planetary boundary layer (PBL) is the lowermost region of troposphere
and is endowed with turbulent characteristics, which can have mechanical and/or
thermodynamic origins. This behavior gives this layer great importance,
mainly in studies about pollutant dispersion and weather forecasting.
However, the instruments usually applied in studies of turbulence in the
PBL have limitations in spatial resolution (anemometer towers) or temporal
resolution (instrumentation aboard an aircraft). Ground-based remote sensing,
both active and passive, offers an alternative for studying the PBL. In
this study we show the capabilities of combining different remote sensing
systems (microwave radiometer – MWR, Doppler lidar – DL – and elastic
lidar – EL) for retrieving a detailed picture on the PBL turbulent
features. The statistical moments of the high frequency distributions of the
vertical wind velocity, derived from DL, and of the backscattered
coefficient, derived from EL, are corrected by two methodologies, namely
first lag correction and -2/3 law correction. The corrected profiles, obtained from DL
data, present small differences when compared with the uncorrected
profiles, showing the low influence of noise and the viability of the
proposed methodology. Concerning EL, in addition to analyzing the influence
of noise, we explore the use of different wavelengths that usually include
EL systems operated in extended networks, like the European Aerosol Research Lidar Network (EARLINET), Latin American Lidar Network (LALINET), NASA Micro-Pulse Lidar Network
(MPLNET) or Skyradiometer Network (SKYNET). In this way we want to show the feasibility of extending the
capability of existing monitoring networks without strong investments or
changes in their measurements protocols. Two case studies were analyzed in
detail, one corresponding to a well-defined PBL and another
corresponding to a situation with presence of a Saharan dust lofted aerosol
layer and clouds. In both cases we discuss results provided by the different
instruments showing their complementarity and the precautions to be applied in
the data interpretation. Our study shows that the use of EL at 532 nm
requires a careful correction of the signal using the first lag time
correction in order to get reliable turbulence information on the PBL.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference53 articles.
1. Alados, I., Foyo-Moreno, I., Olmo, F. J., and Alados-Arboledas, L.:
Relationship between net radiation and solar radiation for semi-arid
shrub-land, Agr. Forest Meteorol., 116, 221–227, 2003. 2. Albrecht, B. A., Bretherton, C. S., Johnson, D., Scubert, W. H., and Frisch,
A. S.: The Atlantic stratocumulus transition experiment – ASTEX, B. Am.
Meteorol. Soc., 76, 889–904, 1995. 3. Andrews, E., Sheridan, P. J., Ogren, J. A., and Ferrare, R.: In situ aerosol
profiles over the Southern Great Plains cloud and radiation test bed site: 1.
Aerosol optical properties, J. Geophys. Res., 109, D06208,
https://doi.org/10.1029/2003JD004025, 2004. 4. Ansmann, A., Fruntke, J., and Engelmann, R.: Updraft and downdraft
characterization with Doppler lidar: cloud-free versus cumuli-topped mixed
layer, Atmos. Chem. Phys., 10, 7845–7858,
https://doi.org/10.5194/acp-10-7845-2010, 2010. 5. Antón, M., Valenzuela, A., Cazorla, A., Gil, J. E.,
Gálvez-Fernández, J., Lyamani, H., Foyo-Moreno, I., Olmo, F. J., and
Alados-Arboledas, L.: Global and diffuse shortwave irradiance during a strong
desert dust episode at Granada (Spain), Atmos. Res., 118, 232–239, 2012.
Cited by
22 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|