Environment and Climate Change Canada

Forecast-based attribution of the role of stratospheric variability in weather extremes

Abstract. Variability of the stratospheric polar vortex, particularly its dramatic breakdown during sudden stratospheric warming (SSW) events, has been linked to a number of surface weather extremes. However, attributing the role of stratospheric variability in a specific observe...

Middle atmosphere chemical and dynamical effects in the CCMI-2022 stratospheric aerosol injection scenario

Abstract. Stratospheric aerosol injection (SAI) could slow surface warming, however, potential side effects include changes in stratospheric ozone and changes in regional surface temperatures and precipitation resulting from tropical lower stratospheric warming. Previous multi-mo...

Influence ofVarying Porewater NaCl Concentrationson Mobilization of Metals, Arsenic, and Phosphorus Stored in StreambedSediments

Abstract Winter deicing salt use has increased freshwater salinization, with groundwater-surface water interactions exposing streambed sediments to large salinity fluctuations. This study examines how salinity fluctuations mobilize metals (Al, Cr, Cu, Fe, Ni, Pb, Zn), arsenic (As...

The Zooplankton International Geospatial dataset: A global repository of spatiotemporal freshwater zooplankton community composition data from lakes and reservoirs to support ecological research

Abstract Zooplankton transfer substantial energy in aquatic food webs and are used as indicators of environmental change. Syntheses of zooplankton community dynamics globally require datasets that span a wide range of environmental gradients; however, these datasets are limited d...

Passive sampling reveals composition of airborne bacteria and fungi across five East African cities

Airborne microbes significantly influence environmental processes and human exposure, yet they remain poorly characterized in Africa. This study presents a regional survey of airborne bacterial and fungal communities across 10 sites in five East African countries: Burundi, the De...

Evading the blues: Nocturnally active adult Leach's Storm‐Petrels show evidence of avoiding LED lights with shorter wavelengths

Abstract Nocturnal seabirds, particularly Procellariiforms, are vulnerable to being negatively impacted by artificial lights as they are prone to encounter various forms of light pollution in coastal and pelagic habitats, leading to strandings or other changes to their normal beh...