Physics
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3801806k&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 1, CiteID L01806
Physics
Atmospheric Processes: Mesoscale Meteorology, Atmospheric Processes: Stratosphere/Troposphere Interactions, Atmospheric Processes: Clouds And Cloud Feedbacks, Atmospheric Processes: Middle Atmosphere Dynamics (0341, 0342), Atmospheric Processes: Acoustic-Gravity Waves
Scientific paper
As a first attempt to understand the impact of typhoon-generated gravity waves (TGWs) on typhoon development, Typhoon Saomai (2006) is simulated and effects of TGWs on background flows are examined by considering momentum flux. The momentum flux of TGWs and its vertical divergence/convergence are larger during the developing stage than during the mature and decaying stages of the typhoon. In the developing and mature (decaying) stages of the typhoon, TGWs act to decrease (increase) vertical wind shear, which is known to inhibit a typhoon's intensification. Thus, TGWs can help a typhoon intensify when the typhoon develops. Upper-level divergence increases notably before a typhoon enters both rapidly-developing and mature stages. A significant portion of upper-level divergence is found to be due to TGWs.
Chun Hye-Yeong
Kim So-Young
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