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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2018

Contributo in rivista

Tipo: Articolo in rivista

Titolo: The superstatistical nature and interoccurrence time of atmospheric mercury concentration fluctuations

Anno di pubblicazione: 2018

Autori: Carbone F., Bruno A. G., Naccarato A., De Simone, F., Gencarelli C. N., Sprovieri F., Hedgecock I. M., Landis M. S., Skov H., Pfaffhuber K. A., Read K. A., Martin L., Angot H., Dommergue A., Magand O., Pirrone N.

Affiliazioni autori: Carbone F., CNR-Institute of Atmospheric Pollution Research, Division of Rende Bruno A. G., CNR-Institute of Atmospheric Pollution Research, Division of Rende; Dipartimento di Fisica, Università della Calabria Naccarato A., CNR-Institute of Atmospheric Pollution Research, Division of Rende De Simone, F., CNR-Institute of Atmospheric Pollution Research, Division of Rende Gencarelli C. N., CNR-Institute of Atmospheric Pollution Research, Division of Rende Sprovieri F., CNR-Institute of Atmospheric Pollution Research, Division of Rende Hedgecock I. M., CNR-Institute of Atmospheric Pollution Research, Division of Rende Landis M. S., U.S. Environmental Protection Agency, Office of Research and Development Skov H., Aarhus University, Department of Environmental Science Pfaffhuber K. A., Norwegian Institute for Air Research (NILU) Read K. A., NCAS, National Centre for Atmospheric Sciences Martin L., Cape Point GAW Station, Climate and Environment Research & Monitoring Angot H., University Grenoble Alpes, CNRS, IRD,IGE, Grenoble, France Dommergue A., University Grenoble Alpes, CNRS, IRD,IGE, Grenoble, France Magand O., University Grenoble Alpes, CNRS, IRD,IGE, Grenoble, France Pirrone N., CNR-Institute of Atmospheric PollutionResearch, Area della Ricerca di Roma 1

Autori CNR:

  • FRANCESCO CARBONE
  • FRANCESCO DE SIMONE
  • CHRISTIAN NATALE GENCARELLI
  • IAN MICHAEL HEDGECOCK
  • ATTILIO NACCARATO
  • NICOLA PIRRONE
  • FRANCESCA SPROVIERI

Lingua: inglese

Abstract: The probability density function (PDF) of the time intervals between subsequent extreme events in atmospheric Hg0 concentration data series from different latitudes has been investigated. The Hg0 dynamic possesses a long-term memory autocorrelation function. Above a fixed threshold Q in the data, the PDFs of the interoccurrence time of the Hg0 data are well described by a Tsallis q-Exponential function. This PDF behavior has been explained in the framework of superstatistics, where the competition between multiple mesoscopic processes affects the macroscopic dynamics. An extensive parameter ?, encompassing all possible fluctuations related to mesoscopic phenomena, has been identified. It follows a ?2-distribution, indicative of the superstatistical nature of the overall process. Shuffling the data series destroys the long-term memory, the distributions become independent of Q, and the PDFs collapse on to the same exponential distribution. The possible central role of atmospheric turbulence on extreme events in the Hg0 data is highlighted.

Lingua abstract: inglese

Pagine da: n/a

Pagine a: n/a

Rivista:

Journal of Geophysical Research. Atmospheres Wiley; [poi] American Geophysical Union
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 2169-8996

DOI: 10.1002/2017JD027384

Referee: Sì: Internazionale

Stato della pubblicazione: Preprint

Parole chiave:

  • Pollution: urban and regional
  • Statistical analysis
  • Probability distributions
  • heavy and fat-tailed
  • Scaling: spatial and temporal
  • Turbulence
  • Superstatistics
  • Mercury
  • interoccurrence times
  • Universal scaling
  • Atmospheric Turbulence

URL: http://dx.doi.org/10.1002/2017JD027384

Data di accettazione: 06/12/2017

Altre informazioni: 2017JD027384

Strutture CNR:

 
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