دورية أكاديمية
Analyzing the turbulent planetary boundary layer by remote sensing systems
| العنوان: | Analyzing the turbulent planetary boundary layer by remote sensing systems |
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| المؤلفون: | MOREIRA, GREGORI de A., GUERRERO-RASCADO, JUAN L., BENAVENT-OLTRA, JOSE A., ORTIZ-AMEZCUA, PABLO, ROMAN, ROBERTO, BEDOYA-VELASQUEZ, ANDRES E., BRAVO-ARANDA, JUAN A., REYES, FRANCISCO J.O., LANDULFO, EDUARDO, ALADOS-ARBOLEDAS, LUCAS |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | boundary layers, troposphere, planetary atmospheres, doppler effect, wind, optical radar, monitoring, microwave radiation, radiometers, aerosols, elastic scattering, remote sensing |
| الوصف: | 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 ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 1263-1280 |
| اللغة: | unknown |
| تدمد: | 1680-7316 |
| العلاقة: | Atmospheric Chemistry and Physics; http://repositorio.ipen.br/handle/123456789/29929Test; 19; orcid:0000-0002-9691-5306; 88.732; 96.00 |
| DOI: | 10.5194/acp-19-1263-2019 |
| الإتاحة: | https://doi.org/10.5194/acp-19-1263-2019Test http://repositorio.ipen.br/handle/123456789/29929Test |
| حقوق: | openAccess |
| رقم الانضمام: | edsbas.F9529E67 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 16807316 |
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| DOI: | 10.5194/acp-19-1263-2019 |