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

Bulletin of the Global Volcanism Network, vol. 23, no. 11 (November 1998)
Managing Editor: Richard Wunderman.

Atmospheric Effects (1995-2001) Lidar data from Hampton, Virginia, USA

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, 23:11. Smithsonian Institution.



Atmospheric Effects (1995-2001)

All times are local (unless otherwise noted)


Table 15 lists the ground-based 48-inch lidar measurements at 0.69 µm taken with a ruby laser in Hampton, Virginia (37.1°N, 76.3°W) during 1998. The lowest levels of aerosol loading ever reported in the 24-year lidar record at Hampton were measured during the summer of 1998.

Table 15. Lidar data from Virginia, USA, for April-December 1998 showing altitudes of aerosol layers. Backscattering ratios are for the ruby wavelength of 0.69 µm. The integrated values show total backscatter, expressed in steradians-1, integrated over 300-m intervals from the tropopause to 30 km. Courtesy of Mary Osborne.

DATE LAYER ALTITUDE (km) (peak) BACKSCATTERING RATIO BACKSCATTERING INTEGRATED
Hampton, Virginia (37.1°N, 76.3°W)
03 Apr 1998 13-26 (19.6) 1.09 4.11 x 10-5
07 Apr 1998 12-27 (14.5) 1.10 5.38 x 10-5
13 Apr 1998 15-25 (21.5) 1.06 2.98 x 10-5
20 May 1998 13-28 (25.9) 1.08 3.42 x 10-5
19 Jun 1998 13-23 (20.9) 1.04 1.70 x 10-5
02 Jul 1998 14-29 (18.8) 1.06 1.17 x 10-5
14 Jul 1998 15-29 (18.5) 1.05 1.62 x 10-5
10 Sep 1998 17-30 (27.7) 1.06 0.89 x 10-5
24 Sep 1998 13-29 (16.6) 1.11 2.99 x 10-5
15 Oct 1998 13-33 (14.2) 1.11 4.81 x 10-5
24 Nov 1998 14-29 (17.9) 1.10 3.79 x 10-5
02 Dec 1998 12-27 (18.2) 1.09 3.15 x 10-5

Information Contacts: Mary Osborn, NASA Langley Research Center (LaRC), Hampton, VA 23681 USA.