Phys.org September 24, 2024 Climate change will accelerate Arctic-Subarctic permafrost thaw which can intensify microbial degradation of carbon-rich soils, methane emissions, and global warming. To better understand the impact of permafrost thaw on future Arctic-Subarctic wildfires and the associated release of greenhouse gases and aerosols an international team of researchers (South Korea, Japan, Norway, USA – National Center for Atmospheric Research, University of Colorado) presented a comprehensive analysis of the effect of future permafrost thaw on land surface processes in the Arctic-Subarctic region using large ensemble forced by the SSP3-7.0 greenhouse gas emission scenario. Analyzing 50 greenhouse warming simulations, which […]
Tag Archives: Weather
Scientists find new way global air churn makes particles
Phys.org July 12, 2024 New particle formation in the free troposphere is a major source of cloud condensation nuclei globally. The prevailing view is that in the free troposphere, new particles are formed predominantly in convective cloud outflows. An international team of researchers (USA -Washington University, NASA Langley Research Center (VA), University of Colorado, NOAA (Boulder), National Center for Atmospheric Research, Boulder, Washington University in St. Louis, Austria) presented another mechanism using global observations. They found that during stratospheric air intrusion events, the mixing of descending ozone-rich stratospheric air with more moist free tropospheric background resulted in elevated hydroxyl radical […]