@article{Stewart-2023-The,
title = "The Occurrence of Near‐0{\mbox{$^\circ$}}C Surface Air Temperatures in the Current and Pseudo‐Global Warming Future Over Southern Canada",
author = "Stewart, Ronald E. and
Liu, Z. and
Th{\'e}riault, Julie M. and
Ruman, Caio Jorge and
Stewart, Ronald E. and
Liu, Z. and
Th{\'e}riault, Julie M. and
Ruman, Caio Jorge and
Stewart, Ronald E. and
Liu, Z. and
Th{\'e}riault, Julie M. and
Ruman, Caio Jorge and
Stewart, Ronald E. and
Liu, Z. and
Th{\'e}riault, Julie M. and
Ruman, Caio Jorge",
journal = "Journal of Geophysical Research: Atmospheres, Volume 128, Issue 6",
volume = "128",
number = "6",
year = "2023",
publisher = "American Geophysical Union (AGU)",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G23-76001",
doi = "10.1029/2022jd037981",
abstract = "Abstract Temperatures near 0{\mbox{$^\circ$}}C represent a critical threshold for many environmental processes and socio‐economic activities. This study examines surface air temperatures ( T ) near 0{\mbox{$^\circ$}}C (−2{\mbox{$^\circ$}}C {\mbox{$\leq$}} T {\mbox{$\leq$}} 2{\mbox{$^\circ$}}C) across much of southern Canada over a 13 year period (October 2000{--}September 2013). It utilized hourly data from 39 weather stations and from 4‐km resolution Weather Research and Forecasting model simulations that were both a retrospective simulation as well as a pseudo‐global warming simulation applicable near the end of the 21st century. Average annual occurrences of near‐0{\mbox{$^\circ$}}C conditions increase by a relatively small amount of 5.1{\%} from 985 hr in the current climate to 1,035 hr within the future one. Near‐0{\mbox{$^\circ$}}C occurrences with precipitation vary from {\textless}5{\%} to approximately 50{\%} of these values. Near‐0{\mbox{$^\circ$}}C occurrences are sometimes higher than values of neighboring temperatures. These near‐0{\mbox{$^\circ$}}C peaks in temperature distributions can occur in both the current and future climate, in only one, or in neither. Only 4.3{\%} of southern Canada is not associated with a near‐0{\mbox{$^\circ$}}C peak and 65.8{\%} is associated with a near‐0{\mbox{$^\circ$}}C peak in both climates. It is inferred that latent heat exchanges from the melting and freezing of, for example, precipitation and the snowpack contribute significantly to some of these findings.",
}
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<abstract>Abstract Temperatures near 0°C represent a critical threshold for many environmental processes and socio‐economic activities. This study examines surface air temperatures ( T ) near 0°C (−2°C łeq T łeq 2°C) across much of southern Canada over a 13 year period (October 2000–September 2013). It utilized hourly data from 39 weather stations and from 4‐km resolution Weather Research and Forecasting model simulations that were both a retrospective simulation as well as a pseudo‐global warming simulation applicable near the end of the 21st century. Average annual occurrences of near‐0°C conditions increase by a relatively small amount of 5.1% from 985 hr in the current climate to 1,035 hr within the future one. Near‐0°C occurrences with precipitation vary from \textless5% to approximately 50% of these values. Near‐0°C occurrences are sometimes higher than values of neighboring temperatures. These near‐0°C peaks in temperature distributions can occur in both the current and future climate, in only one, or in neither. Only 4.3% of southern Canada is not associated with a near‐0°C peak and 65.8% is associated with a near‐0°C peak in both climates. It is inferred that latent heat exchanges from the melting and freezing of, for example, precipitation and the snowpack contribute significantly to some of these findings.</abstract>
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%0 Journal Article
%T The Occurrence of Near‐0°C Surface Air Temperatures in the Current and Pseudo‐Global Warming Future Over Southern Canada
%A Stewart, Ronald E.
%A Liu, Z.
%A Thériault, Julie M.
%A Ruman, Caio Jorge
%J Journal of Geophysical Research: Atmospheres, Volume 128, Issue 6
%D 2023
%V 128
%N 6
%I American Geophysical Union (AGU)
%F Stewart-2023-The
%X Abstract Temperatures near 0°C represent a critical threshold for many environmental processes and socio‐economic activities. This study examines surface air temperatures ( T ) near 0°C (−2°C łeq T łeq 2°C) across much of southern Canada over a 13 year period (October 2000–September 2013). It utilized hourly data from 39 weather stations and from 4‐km resolution Weather Research and Forecasting model simulations that were both a retrospective simulation as well as a pseudo‐global warming simulation applicable near the end of the 21st century. Average annual occurrences of near‐0°C conditions increase by a relatively small amount of 5.1% from 985 hr in the current climate to 1,035 hr within the future one. Near‐0°C occurrences with precipitation vary from \textless5% to approximately 50% of these values. Near‐0°C occurrences are sometimes higher than values of neighboring temperatures. These near‐0°C peaks in temperature distributions can occur in both the current and future climate, in only one, or in neither. Only 4.3% of southern Canada is not associated with a near‐0°C peak and 65.8% is associated with a near‐0°C peak in both climates. It is inferred that latent heat exchanges from the melting and freezing of, for example, precipitation and the snowpack contribute significantly to some of these findings.
%R 10.1029/2022jd037981
%U https://gwf-uwaterloo.github.io/gwf-publications/G23-76001
%U https://doi.org/10.1029/2022jd037981
Markdown (Informal)
[The Occurrence of Near‐0°C Surface Air Temperatures in the Current and Pseudo‐Global Warming Future Over Southern Canada](https://gwf-uwaterloo.github.io/gwf-publications/G23-76001) (Stewart et al., GWF 2023)
ACL
- Ronald E. Stewart, Z. Liu, Julie M. Thériault, Caio Jorge Ruman, Ronald E. Stewart, Z. Liu, Julie M. Thériault, Caio Jorge Ruman, Ronald E. Stewart, Z. Liu, Julie M. Thériault, Caio Jorge Ruman, Ronald E. Stewart, Z. Liu, Julie M. Thériault, and Caio Jorge Ruman. 2023. The Occurrence of Near‐0°C Surface Air Temperatures in the Current and Pseudo‐Global Warming Future Over Southern Canada. Journal of Geophysical Research: Atmospheres, Volume 128, Issue 6, 128(6).
