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\begin{document}

\title{Where do cold air outbreaks occur and how have they changed over time?}



\author[1]{Erik T Smith}%
\author[2]{Scott C Sheridan}%
\affil[1]{Kent State University}%
\affil[2]{Kent State}%


\vspace{-1em}



  
  \date{May 19, 2024}


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\begin{abstract}
On any given day, some region of the globe is likely to be affected by
significant negative temperature anomalies. Depending on the severity,
extreme cold periods may be deemed cold air outbreaks (CAOs). These CAOs
can be detrimental to the agricultural industry and human health,
especially in less prepared regions. A systematic CAO classification was
developed using a set of criteria concerning magnitude, duration, and
spatial extent from two gridded reanalysis datasets from 1979 -- 2018.
Trends in CAOs were calculated for different regions across the globe
and the results from each reanalysis dataset compared with one another
to identify discrepancies. CAOs were found to have decreased in spatial
extent, frequency, duration, and magnitude across much of the globe,
particularly across Alaska, Canada, and the North Atlantic, while an
increase in CAOs was observed in Eastern Europe, Central Eurasia, and
the Southern Ocean.%
\end{abstract}%



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