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Report on Atmospheric Effects (1995-2001) — June 1998

Bulletin of the Global Volcanism Network, vol. 23, no. 6 (June 1998)
Managing Editor: Richard Wunderman.

Atmospheric Effects (1995-2001) Lidar data from Hawaii and Germany

Please cite this report as:

Global Volcanism Program, 1998. Report on Atmospheric Effects (1995-2001). In: Wunderman, R. (ed.), Bulletin of the Global Volcanism Network, 23:6. Smithsonian Institution.



Atmospheric Effects (1995-2001)

All times are local (unless otherwise noted)


Table 14 lists atmospheric lidar data from Mauna Loa, Hawaii for 2 July 1997 through 21 January 1998, and from Garmisch-Partenkirchen, Germany for 20 April through 24 June 1998. Measurements indicate that the aerosol layer peak location over Hawaii was at a consistently lower elevation in the second half of 1997 (19.2-25.3 km) compared to the second half of 1996 (21.7-28.0 km) (Bulletin v. 22, no. 5). Measurements from Germany showed no significant change compared to earlier in 1998 (Bulletin v. 23, no. 3).

Table 14. Lidar data from Hawaii (July 1997-January 1998) and Germany (April-June 1998) showing altitudes of aerosol layers. Backscattering ratios from Mauna Loa are for the ruby wavelength of 694 nm; those from Garmisch-Partenkirchen are for the Nd-YAG wavelength of 532 nm, with equivalent ruby values in parentheses. Integrated values show total backscatter, expressed in steradians-1, integrated over 300-m intervals from 15.8-33 km for Hawaii, and from the tropopause to 30 km for Germany. Courtesy of John Barnes and Horst Jäger.

DATE LAYER ALTITUDE (km) (peak) BACKSCATTERING RATIO BACKSCATTERING INTEGRATED
Mauna Loa, Hawaii (19.5°N, 155.6°W)
02 Jul 1997 16-28 (23.8) 1.26 0.69 x 10-4
11 Jul 1997 17-29 (18.4) 1.50 0.72 x 10-4
16 Jul 1997 16-28 (23.2) 1.26 0.78 x 10-4
23 Jul 1997 16-29 (22.9) 1.31 0.97 x 10-4
01 Aug 1997 16-27 (19.9) 1.23 0.55 x 10-4
06 Aug 1997 16-28 (19.5) 1.37 0.98 x 10-4
14 Aug 1997 17-28 (22.3) 1.30 0.67 x 10-4
21 Aug 1997 17-30 (22.6) 1.24 0.54 x 10-4
27 Aug 1997 16-27 (21.4) 1.31 0.89 x 10-4
03 Sep 1997 16-28 (24.7) 1.24 0.62 x 10-4
10 Sep 1997 17-28 (25.3) 1.28 0.67 x 10-4
17 Sep 1997 16-27 (25.3) 1.25 0.80 x 10-4
22 Oct 1997 16-27 (23.5) 1.26 0.83 x 10-4
07 Nov 1997 16-29 (21.4) 1.20 0.68 x 10-4
12 Nov 1997 17-27 (19.9) 1.18 0.85 x 10-4
06 Dec 1997 16-28 (24.1) 1.28 1.18 x 10-4
19 Dec 1997 16-27 (19.6) 1.28 0.95 x 10-4
24 Dec 1997 16-28 (20.2) 1.27 0.99 x 10-4
07 Jan 1998 17-28 (19.2) 1.50 1.00 x 10-4
16 Jan 1998 16-29 (19.3) 1.41 1.33 x 10-4
21 Jan 1998 16-28 (20.8) 1.61 1.27 x 10-4
Garmisch-Partenkirchen, Germany (47.5°N, 11.0°E)
20 Apr 1998 11-34 (18.5) 1.06 (1.12) --
23 Apr 1998 13-30 (19.0) 1.06 (1.11) --
29 Apr 1998 11-33 (15.5) 1.06 (1.13) --
07 May 1998 14-33 (18.6) 1.05 (1.10) --
11 May 1998 13-28 (19.4) 1.05 (1.09) --
14 May 1998 12-28 (20.3) 1.05 (1.10) --
20 May 1998 12-27 (19.2) 1.05 (1.10) --
30 May 1998 11-27 (22.5) 1.04 (1.08) --
09 Jun 1998 13-29 (15.8) 1.05 (1.10) --
24 Jun 1998 13-30 (19.4) 1.04 (1.08) --

Information Contacts: John Barnes, Mauna Loa Observatory, P.O. Box 275, Hilo, HI 96720 USA; Horst Jäger, Fraunhofer -- Institut für Atmosphärische Umweltforschung, Kreuzeckbahnstrasse 19, D-82467 Garmisch-Partenkirchen, Germany.