Vortex streets to the lee of Madeira in a kilometre-resolution regional climate model
نویسندگان
چکیده
Abstract. Atmospheric vortex streets are a widely studied dynamical effect of isolated mountainous islands. Observational evidence comes from case studies and satellite imagery, but the climatology annual cycle shedding often poorly understood. Using non-hydrostatic limited-area COSMO model driven by ERA-Interim reanalysis, we conducted 10-year-long simulation over mesoscale domain covering Madeira Canary archipelagos at high spatial (grid spacing 1 km) temporal resolutions. Basic properties were analysed validated through 6 d long study in lee Island. The compares well with aerial observations existing literature on idealised simulations. Our results show strong dependency local synoptic-flow conditions, which to large extent governed location, shape strength Azores high. As part study, developed identification algorithm. algorithm is based set criteria enabled us develop Island for 10-year period. analysis shows pronounced an increasing vortex-shedding rate April August sudden decrease September. This consistent wind conditions inversion height patterns.
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ژورنال
عنوان ژورنال: Weather and climate dynamics
سال: 2023
ISSN: ['2698-4016']
DOI: https://doi.org/10.5194/wcd-4-189-2023