Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data

The height of the mixing layer is a significant parameter for describing the dynamics of the planetary boundary layer (PBL), especially for air quality control and for the parametrizations in numerical modeling. The problem is that the heights of the mixing layer cannot be measured directly. The val...

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Autores principales:	Sergey Odintsov, Eugene Miller, Andrey Kamardin, Irina Nevzorova, Arkady Troitsky, Mathias Schröder
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	planetary boundary layer sodar MWR mixing height temperature inversion Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/fd46bb34389743ff9a4c8639760bff93
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id	oai:doaj.org-article:fd46bb34389743ff9a4c8639760bff93
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spelling	oai:doaj.org-article:fd46bb34389743ff9a4c8639760bff932021-11-25T17:31:01ZInvestigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data10.3390/environments81101152076-3298https://doaj.org/article/fd46bb34389743ff9a4c8639760bff932021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3298/8/11/115https://doaj.org/toc/2076-3298The height of the mixing layer is a significant parameter for describing the dynamics of the planetary boundary layer (PBL), especially for air quality control and for the parametrizations in numerical modeling. The problem is that the heights of the mixing layer cannot be measured directly. The values of this parameter are depending both on the applied algorithms for calculation and on the measuring instruments which have been used by the data source. To determine the height of a layer of intense turbulent heat exchange, data were used from acoustic meteorological locator (sodar) and from a passive single-channel scanning microwave radiometer MTP-5 (MWR) to measure the temperature profile in a layer of up to 1 km. Sodar can provide information on the structure of temperature turbulence in the PBL directly. These data have been compared with the mixing layer height calculated with the Parcel method by using the MTP-5 data. For the analysis, July and September 2020 were selected in the city of Tomsk in Siberia as characteristic periods of mid-summer and the transition period to autumn. The measurement results, calculations and inter-comparisons are shown and discussed in this work. During temperature inversions in the boundary layer, it was observed that turbulent heat transfer (increased dispersion of air temperature) is covering the inversion layers and the overlying ones. Moreover, this phenomenon is not only occurring during the morning destruction of inversions, but also in the process of their formation and development.Sergey OdintsovEugene MillerAndrey KamardinIrina NevzorovaArkady TroitskyMathias SchröderMDPI AGarticleplanetary boundary layersodarMWRmixing heighttemperature inversionEnvironmental technology. Sanitary engineeringTD1-1066ENEnvironments, Vol 8, Iss 115, p 115 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	planetary boundary layer sodar MWR mixing height temperature inversion Environmental technology. Sanitary engineering TD1-1066
spellingShingle	planetary boundary layer sodar MWR mixing height temperature inversion Environmental technology. Sanitary engineering TD1-1066 Sergey Odintsov Eugene Miller Andrey Kamardin Irina Nevzorova Arkady Troitsky Mathias Schröder Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data
description	The height of the mixing layer is a significant parameter for describing the dynamics of the planetary boundary layer (PBL), especially for air quality control and for the parametrizations in numerical modeling. The problem is that the heights of the mixing layer cannot be measured directly. The values of this parameter are depending both on the applied algorithms for calculation and on the measuring instruments which have been used by the data source. To determine the height of a layer of intense turbulent heat exchange, data were used from acoustic meteorological locator (sodar) and from a passive single-channel scanning microwave radiometer MTP-5 (MWR) to measure the temperature profile in a layer of up to 1 km. Sodar can provide information on the structure of temperature turbulence in the PBL directly. These data have been compared with the mixing layer height calculated with the Parcel method by using the MTP-5 data. For the analysis, July and September 2020 were selected in the city of Tomsk in Siberia as characteristic periods of mid-summer and the transition period to autumn. The measurement results, calculations and inter-comparisons are shown and discussed in this work. During temperature inversions in the boundary layer, it was observed that turbulent heat transfer (increased dispersion of air temperature) is covering the inversion layers and the overlying ones. Moreover, this phenomenon is not only occurring during the morning destruction of inversions, but also in the process of their formation and development.
format	article
author	Sergey Odintsov Eugene Miller Andrey Kamardin Irina Nevzorova Arkady Troitsky Mathias Schröder
author_facet	Sergey Odintsov Eugene Miller Andrey Kamardin Irina Nevzorova Arkady Troitsky Mathias Schröder
author_sort	Sergey Odintsov
title	Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data
title_short	Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data
title_full	Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data
title_fullStr	Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data
title_full_unstemmed	Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data
title_sort	investigation of the mixing height in the planetary boundary layer by using sodar and microwave radiometer data
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fd46bb34389743ff9a4c8639760bff93
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Investigation of the Mixing Height in the Planetary Boundary Layer by Using Sodar and Microwave Radiometer Data

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