Physics
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....1368l&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #1368
Physics
Scientific paper
The very strong volcanic eruption of Mt. Pinatubo in June 1991 affected directly the troposphere and lower and middle stratosphere. Here we look for its effects in the mesopause region as revealed by the radio wave absorption measurements in the lower ionosphere over Central Europe and inferred planetary and gravity wave activity. The gravity wave activity inferred from the nighttime LF radio wave absorption displays an evident enhancement for waves of periods of about 2-3 hours in coincidence with regional measurements of the optical depth of (volcanic) aerosols, while there is no detectable effect for short period waves (T < 1 hour). There is no detectable effect in the planetary wave activity inferred from the daytime HF radio wave absorption. As for the absorption itself, the results on the impact of the Mt. Pinatubo eruption are rather inconclusive.
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