Numerical Simulations of an Observed Gravity Current and Gravity Waves in an Environment Characterized by Complex Stratification and Shear
| Autor: | Chaing Chen, Yi Jin, F. Martin Ralph, Yuh-Lang Lin, Steven E. Koch |
|---|---|
| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Journal of the Atmospheric Sciences. 53:3570-3588 |
| ISSN: | 1520-0469 0022-4928 |
| DOI: | 10.1175/1520-0469(1996)053<3570:nsoaog>2.0.co;2 |
| Popis: | Numerical simulations of a gravity current in an environment characterized by complex stratification and vertical wind shear have been performed using a nonhydrostatic, two-dimensional, dry, primitive-equation model. Data from one of the most complete documentations to date of gravity waves associated with a gravity current, presented in an earlier study, are used both to prescribe the gravity current's environment and for validation of the simulated gravity current and its associated gravity waves. These comparisons indicate that the gravity current observed by a Doppler wind profiler and sodars was well simulated in terms of depth, density contrast, and propagation speed and that the model produced a variety of gravity waves similar in many ways to these observed. Because uncertainties remained concerning the gravity wave generation mechanisms derived from the observations (e.g., wavelengths were not observed), the validated simulations are used to test these tentative hypotheses. The simulatio... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|