Radon-based technique for the analysis of atmospheric stability : a case study from Central Poland

• Autorzy: Podstawczyńska A. , Chambers S. D.

Identyfikatory

DOI

10.2478/nuka-2018-0006

• Języki publikacji: EN

Abstrakty

EN

An economical and easy-to-implement technique is outlined by which the mean nocturnal atmospheric mixing state (“stability”) can be assessed over a broad (city-scale) heterogeneous region solely based on near- -surface (2 m above ground level [a.g.l.]) observations of the passive tracer radon-222. The results presented here are mainly based on summer data of hourly meteorological and radon observations near Łodź, Central Poland, from 4 years (2008–2011). Behaviour of the near-surface wind speed and vertical temperature gradient (the primary controls of the nocturnal atmospheric mixing state), as well as the urban heat island intensity, are investigated within each of the four radon-based nocturnal stability categories derived for this study (least stable, weakly stable, moderately stable, and stable). On average, the most (least) stable nights were characterized by vertical temperature gradient of 1.1 (0.5)⁰C·m-1, wind speed of ~0.4 (~1.0) m·s-1, and urban heat island intensity of 4.5 (0.5)⁰C. For sites more than 20 km inland from the coast, where soils are not completely saturated or frozen, radon-based nocturnal stability classification can significantly enhance and simplify a range of environmental research applications (e.g. urban climate studies, urban pollution studies, regulatory dispersion modelling, and evaluating the performance of regional climate and pollution models).

Słowa kluczowe

EN

radon-222; Central Poland; stability classification; stable nocturnal boundary layer; atmospheric mixing state

PL

radon-222; Polska centralna; klasyfikacja stabilności

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2018
• Tom: Vol. 63, No. 2
• Strony: 47--54
• Opis fizyczny: Bibliogr. 33 poz., rys.

Twórcy

autor

Podstawczyńska A.

• Department of Meteorology and Climatology Faculty of Geographical Sciences University of Lodz 88 Narutowicza St., 90-139 Łódź, Poland

autor

Chambers S. D.

• ANSTO Institute for Environmental Research Locked Bag 2001, Kirrawee DC, NSW 2232, Australia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).