Observations of the urban boundary layer in a cold climate city

Varentsov, M.; Konstantinov, P.; Repina, I.; Artamonov, A.; Pechkin, A.; Soromotin, A.; Esau, I.; Baklanov, A.

Авторы: Varentsov Mikhail, Konstantinov Pavel, Repina Irina, Artamonov Arseniy, Pechkin Alexander, Soromotin Andrei, Esau Igor, Baklanov Alexander
Журнал: Urban Climate
Том: 47
Год издания: 2023
Номер статьи: 101351
DOI: 10.1016/j.uclim.2022.101351
Аннотация: Cold environment supports a large diversity of local climates. Among them, urban climates in northern cities stand out for their pronounced warm temperature anomaly known as the Urban Heat Island (UHI). UHI in northern cities has been already studies through satellite images and in-situ observations in the urban canopy layer (UCL). Yet, the vertical structure of the urban atmospheric boundary layer (UBL) has not been studied there. This work presents new observations of UBL in Nadym – a sub-Arctic Siberian city. During several intensive observing periods we run simultaneous registration of urban and rural meteorological parameters with unmanned drones, a microwave temperature profiler and a dense network of ground-based sensors. The data analysis reveals details of UHI development in the UCL and UBL, and links together horizontal urban-rural canopy-layer temperature differences, boundary layer stability, and UHI vertical extent. We show that during strong temperature inversions, UBL is less stratified than its rural counterpart, but it still remains very thin and limited in height by a few tens of meters. The observations disclose that the ground-based (50 m – 100 m above ground) temperature inversion is one of the strongest control factors for UHI in cold climate conditions in winter.
Добавил в систему: Варенцов Михаил Иванович

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Observations of the urban boundary layer in a cold climate cityстатья

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