Verification of moisture budgets during drifting snow conditions in a cold wind tunnel
| Autor: | Masaki Nemoto, Satoru Yamaguchi, Michael Lehning, J. Rüedi, Nander Wever, Andrew Clifton, Kouichi Nishimura, A. Sato |
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| Rok vydání: | 2009 |
| Předmět: |
Particle number
Moisture Meteorology Radiative forcing Snow Atmospheric sciences Physics::Geophysics Astrophysics::Solar and Stellar Astrophysics Environmental science Sublimation (phase transition) Astrophysics::Earth and Planetary Astrophysics Diffusion (business) Water vapor Water Science and Technology Wind tunnel |
| Zdroj: | Water Resources Research. 45 |
| ISSN: | 0043-1397 |
| DOI: | 10.1029/2008wr007522 |
| Popis: | [1] Experiments in a cold wind tunnel were used to verify drifting snow sublimation models. A layer of drifting snow particles was formed over a sintered snow surface. Sublimation and drifting snow flux were estimated from two vertically resolved profile measurements separated along the flow path and were compared to a simple, one-dimensional diffusion model of drift and drifting snow sublimation. The experiments show an increase in water vapor content of the air from drifting snow sublimation. The measured drifting snow sublimation appeared to be consistent with albeit somewhat larger than theoretical values found in the model study. Under wind tunnel conditions, particle number density appears to be the most important controlling factor on the sublimation rate. For experiments with external solar radiative forcing, the increase of the sublimation rate was also larger than theoretical predictions. The experiments suggest that irregular snow crystals and solar radiation might increase sublimation rates more than described by many drifting snow models. |
| Databáze: | OpenAIRE |
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