Projected changes to extreme ice loads for overhead transmission lines across Canada

Jeong, Do Un; Sushama, Laxmi; Vieira, Michael; Koenig, Kristina

doi:10.1016/j.scs.2018.03.017

Cited by 26 publications

(18 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The projected northwestward shift in the region of most frequent freezing rain in North America found here agrees with prior studies over this region, including Lambert and Hansen (2011) and Jeong et al. (2018); Jeong et al. (2019).…”

Section: Discussionsupporting

confidence: 92%

A Multi‐Algorithm Analysis of Projected Changes to Freezing Rain Over North America in an Ensemble of Regional Climate Model Simulations

et al. 2022

View full text Add to dashboard Cite

Freezing rain events have caused severe socioeconomic and ecosystem impacts. An understanding of how these events may evolve as the Earth warms is necessary to adequately adapt infrastructure to these changes. We present an analysis of projected changes to freezing rain events over North America relative to the 1980–2009 recent past climate for the periods during which +2, +3, and +4°C of global warming is attained. We diagnose freezing rain using four precipitation‐type algorithms (Cantin and Bachand, Bourgouin, Ramer, and Baldwin) applied to four simulations of the fifth‐generation Canadian Regional Climate Model (CRCM5) driven by four global climate models (GCMs). We find that the choice of driving GCM strongly influences the spatial pattern of projected change. The choice of algorithm has a comparatively smaller impact, and primarily affects the magnitude but not the sign of projected change. We identify several regions where all simulations and algorithms agree on the sign of change, with increases projected over portions of western Canada and decreases over the central, eastern, and southern United States. However, we also find large regions of disagreement on the sign of change depending on driving GCM and even ensemble member of the same GCM, highlighting the importance of examining freezing rain events in a multi‐member ensemble of simulations driven by multiple GCMs to sufficiently account for uncertainty in projections of these hazardous events.

show abstract

Section: Discussionsupporting

confidence: 92%

A Multi‐Algorithm Analysis of Projected Changes to Freezing Rain Over North America in an Ensemble of Regional Climate Model Simulations

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Compared with previous studies (Dettinger, 2011;Hagos et al, 2016;Payne & Magnusdottir, 2015), many common features of the projected changes in ARs over western North America are found in this study, including the increase in AR occurrences and intensity in future climate. Furthermore, the projected increase of AR-related FR events for the west coast of Canada and inland United States presented in this study can be used to explain partially the increases in FR over these areas reported in previous studies (e.g., Cheng et al, 2011;Jeong et al, 2018). However, the comparison of the CRCM5 simulations driven by different GCMs revealed considerable uncertainties in the magnitude of the projected increases in AR occurrences/intensity and the AR-related FR.…”

Section: Summary and Discussionmentioning

confidence: 60%

“…Previous climate projection studies (Jeong et al, 2018;Lambert & Hansen, 2011) have suggested significant changes in FR over North America in a warmer climate with important spatial variability. For instance, previous studies suggest increase in FR over Canada (Cheng et al, 2011;Jeong et al, 2018;Lambert & Hansen, 2011) with decreases over parts of the United States (Jeong et al, 2018;Lambert & Hansen, 2011), implying a northward shift in the FR belt over North America. However, further studies are required to understand the relationship between the changes in FR and the changes in the occurrence and intensity of ARs along the west coast of North America.…”

Section: Introductionmentioning

confidence: 96%

“…A recent study by Jeong et al () demonstrated the ability of the Canadian Regional Climate Model (CRCM5), driven by a reanalysis data and two GCMs, in simulating the climatology of FR events over the coastal regions of western North America. They also reported future increases in winter FR amounts for most of Canada and decreases for the east coast and inland of the south‐eastern United States.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Freezing Rain Events Related to Atmospheric Rivers and Associated Mechanisms for Western North America

Liang

Sushama

2019

Geophysical Research Letters

View full text Add to dashboard Cite

Atmospheric rivers (ARs) are responsible for hazardous hydrometeorological events over western North America. For the period 2070–2099 relative to 1976–2005, regional climate model simulations driven by two coupled global climate models for the RCP4.5 and 8.5 scenarios project up to 90% increase in AR occurrences over western North America. Results also suggest that the increase in AR‐related freezing rain (FR) events is possibly due to changes in both dynamical and thermal mechanisms associated with AR events. In the west coast of Canada, AR‐related FR events are projected to intensify, which is facilitated by the increased midlevel ascent related to differential vorticity advection associated with ARs. The fraction of AR‐related FR amount is projected to increase over the inland of western U.S. and the west coast of Canada, which is possibly driven by the increased temperature difference between the subfreezing near‐surface layer and the above‐freezing layer aloft.

show abstract

“…Because many regions of South China receive a large amount of rain and snow every year, the problem of cold wet deposition has attracted considerable interest in research [5], [6]. Systematic research has been carried out on the icing of and snow cover on insulators that has revealed important characteristics related to flashover and discharge development, where this has helped prevent and mitigate these problems in power grids [7]- [9]. Studies in the area have considered the physical characteristics of the icing surface, methods to test this, and characteristics and mathematical models of the icing on insulators to determine the various factors and mechanism of flashover due to icing.…”

Section: Introductionmentioning

confidence: 99%

Studying AC Flashover Performance of Suspension Insulators Under Natural Cold Fog and Wet Deposition Conditions

et al. 2020

View full text Add to dashboard Cite

Projected changes to extreme ice loads for overhead transmission lines across Canada

Cited by 26 publications

References 38 publications

A Multi‐Algorithm Analysis of Projected Changes to Freezing Rain Over North America in an Ensemble of Regional Climate Model Simulations

A Multi‐Algorithm Analysis of Projected Changes to Freezing Rain Over North America in an Ensemble of Regional Climate Model Simulations

Freezing Rain Events Related to Atmospheric Rivers and Associated Mechanisms for Western North America

Studying AC Flashover Performance of Suspension Insulators Under Natural Cold Fog and Wet Deposition Conditions

Contact Info

Product

Resources

About