A Continental Storm with a Steady, Adiabatic Updraft and High Concentrations of Small Ice Particles: 6 July 1976 Case Study
| Autor: | Ilga R. Paluch, Daniel Breed |
|---|---|
| Rok vydání: | 1984 |
| Předmět: | |
| Zdroj: | Journal of the Atmospheric Sciences. 41:1008-1024 |
| ISSN: | 1520-0469 0022-4928 |
| DOI: | 10.1175/1520-0469(1984)041<1008:acswas>2.0.co;2 |
| Popis: | A storm in southeastern Wyoming was investigated by the NCAR/NOAA sailplane which spiraled up to 5.6 km above cloud base in and above a weak echo region. The updraft associated with the weak echo region was remarkably steady (about 8 m s−1) and the temperature lapse rate was nearly adiabatic up to at least 4.4 km above cloud base (−30°C), indicating that the updraft air was unmixed. If the nearest sounding (45 km away in the direction of the storm's inflow) is representative of the storm's low-level environment, then the updraft air should have originated from a subcloud layer about a kilometer above ground where the low-level winds with respect to the storm were the strongest, and not from surface levels where the water vapor mixing ratios were the highest. The updraft did not accelerate even though the temperature measurements indicate that the updraft air had significant amounts of buoyancy (with corrections for adiabatic liquid or frozen water loading). Presumably nonhydrostatic pressure forc... |
| Databáze: | OpenAIRE |
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