Extreme large-scale North American cold events are associated with strong undulations in the tropospheric jet stream which bring cold polar air southward over the continent. Here we propose that these jet undulations are associated with the North American part of the Circumglobal Teleconnection Pattern—a pair of zonally oriented waves of zonal wave number 5 which are in zonal quadrature with each other. While the Pacific/North American pattern is associated with the first circumglobal wave pattern, North American extreme cold events are associated with the second pattern.

Worldwide riverine thermal pollution patterns were investigated by combining mean annual heat rejection rates from power plants with once-through cooling systems with the global hydrological-water temperature model variable infiltration capacity (VIC)-RBM. The model simulates both streamflow and water temperature on 0.5° × 0.5° spatial resolution worldwide and by capturing their effect, identifies multiple thermal pollution hotspots.

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The 207-to-81 vote in the House of Commons yesterday came 30 days before the pact comes into force globally, and brings the total number of nations that have endorsed it to 74.

UNITED NATIONS: The landmark Paris agreement on climate change will enter into force in 30 days, after the number of countries ratifying the accord surpassed a key threshold on Wednesday.

This report assesses the preparedness of Canada’s provinces and Yukon to limit climate change related flood damage, relative to current (2016) and future (2030) major precipitation events. The report provides direction to the provinces and territory to build upon efforts to limit flood risk.

An unlikely alliance of the Queen, Prince William, the Labour MP Frank Field, Commonwealth countries and Canadian ecologists join forces today to protect one of the largest coastal temperate rainfo

Reconstructing the past variability of Arctic sea ice provides an essential context for recent multi-year sea ice decline, although few quantitative reconstructions cover the Holocene period prior to the earliest historical records 1,200 years ago. Photochemical recycling of bromine is observed over first-year, or seasonal, sea ice in so-called “bromine explosions” and we employ a 1-D chemistry transport model to quantify processes of bromine enrichment over first-year sea ice and depositional transport over multi-year sea ice and land ice.

he study of the management of weather-related disaster risks by municipalities has attracted little attention even though these organizations play a key role in protecting the population from extreme meteorological conditions. This article contributes to filling this gap with new evidence on the level and determinants of Quebec municipalities’ preparedness for weather hazards and response to related weather warnings.

Canada will impose a carbon price on provinces that do not adequately regulate emissions by themselves, Environment Minister Catherine McKenna said on Sunday without giving details on how the Liber

A recent study finds the boreal forests of North America may fare relatively well in the face of climate change, and could provide habitat for wildlife fleeing from the south.