On using ocean swells for continuous infrasonic measurements of winds and temperature in the lower, middle, and upper atmosphere

Details On using ocean swells for continuous infrasonic measurements of winds and temperature in the lower, middle, and upper atmosphere On using ocean swells for continuous infrasonic measurements of winds and temperature in the lower, middle, and upper atmosphere

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3119304g&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 19, CiteID L19304

Physics

16

Atmospheric Composition And Structure: Pressure, Density, And Temperature, Atmospheric Composition And Structure: Instruments And Techniques, Global Change: Atmosphere (0315, 0325), Oceanography: Physical: Surface Waves And Tides (1255), Oceanography: Physical: Air/Sea Interactions (0312)

Scientific paper

The arrival azimuths of coherent microbarom signals observed in Hawaii during 2003 are associated with high ocean wave activity in the Pacific Basin, the dominant wind directions in the troposphere, stratosphere, and mesosphere, and the thermal structure of the atmosphere. Some of the seasonal trends in the microbarom observations can be explained by the winds in the stratosphere and lower mesosphere, while some of the daily variability can be explained by the winds in the troposphere and lower stratosphere. However, coherent energy from powerful swells may overcome the wind-carried microbarom signals and arrive to the station through thermospheric ducting. Our observations suggest that either (1) the wind speeds in the troposphere, stratosphere and mesosphere may be underestimated in atmospheric models or (2) elevated leaky infrasonic waveguides are persistent propagation paths that should be investigated in more detail.

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