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| Titel |
On recent (2008–2012) stratospheric aerosols observed by lidar over Japan |
| VerfasserIn |
O. Uchino, T. Sakai, T. Nagai, K. Nakamae, I. Morino, K. Arai, H. Okumura, S. Takubo, T. Kawasaki, Y. Mano, T. Matsunaga, T. Yokota |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 24 ; Nr. 12, no. 24 (2012-12-17), S.11975-11984 |
| Datensatznummer |
250011674
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| Publikation (Nr.) |
 copernicus.org/acp-12-11975-2012.pdf |
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| Zusammenfassung |
An increase in stratospheric aerosols caused by the volcanic eruption of Mt.
Nabro (13.37° N, 41.70° E) on 12 June 2011 was detected
by lidar at Tsukuba (36.05° N, 140.13° E) and Saga
(33.24° N, 130.29° E) in Japan. The maximum
backscattering ratios at a wavelength of 532 nm were 2.0 at 17.0 km on 10
July 2011 at Tsukuba and 3.6 at 18.2 km on 23 June 2011 at Saga. The maximum
integrated backscattering coefficients (IBCs) at 532 nm above the first tropopause
height were 4.18×10−4 sr−1 on 11 February 2012 at
Tsukuba and 4.19×10−4 sr−1 on 23 June 2011 at Saga,
respectively.
A time series of lidar observational results at Tsukuba have also been
reported from January 2008 through May 2012. Increases in stratospheric
aerosols were observed after the volcanic eruptions of Mt. Kasatochi
(52.18° N, 175.51° E) in August 2008 and Mt. Sarychev
Peak (48.09° N, 153.20° E) in June 2009. The yearly
averaged IBCs at Tsukuba were 2.54×10−4 sr−1,
2.48×10−4 sr−1, 2.45×10−4 sr−1,
and 2.20×10−4 sr−1 for 2008, 2009, 2010, and 2011,
respectively. These values were about twice the IBC background level
(1.21×10−4 sr−1) from 1997 to 2001 at Tsukuba. We briefly
discuss the influence of the increased aerosols on climate and the
implications for analysis of satellite data. |
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