Wind alters snow crystals, impacting climate models

Phys.org  December 16, 2024 Loose surface snow gets eroded and transported by wind, which influences the snow particles’ physical properties that determine the characteristics of the emerging wind-impacted snowpack layer. Researchers in Switzerland used cold-laboratory ring wind tunnel experiments to study the governing processes during airborne snow transport with stable water isotopes as tracers for these micro-scale processes. They documented the growing and rounding of snow particles with transport time, with a concurrent decrease in specific surface area and attributed this evolution to the process of airborne snow metamorphism. The changes showed a clear isotopic signature of metamorphic deposition, which […]