| Autor: |
F.M. Ralph, M. Crochet, S.V. Venkateswaran, C. Mazaudier |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
[Proceedings] IGARSS'91 Remote Sensing: Global Monitoring for Earth Management. |
| DOI: |
10.1109/igarss.1991.579937 |
| Popis: |
This study combines observations from remote sensing instruments and a surface mesonetwork to examine important mesoscale and microscale features associated with a cold front. Sodar observations of the front reveal its similarity to a gust front and contain evidence of Kelvin-Helmholtz billow formation and of a possible solitary wave ahead of the front. Clear-air radar observations of vertical velocity from 1.2-10 km AGL indicate that gravity waves forced by the front do not propagate above 3.5 km, while a temperature sounding suggests that the vertical wave propagation is limited by a neutral layer from 3.2-4.0 km. The observed gravity wave frequencies are found to be dominated by buoyancy oscillations both above the front and in the cold air behind it. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
