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Report on Atmospheric Effects (1995-2001) — March 1997

Bulletin of the Global Volcanism Network, vol. 22, no. 3 (March 1997)
Managing Editor: Richard Wunderman.

Atmospheric Effects (1995-2001) Lidar data from Cuba, Hawaii, and Virginia

Please cite this report as:

Global Volcanism Program, 1997. Report on Atmospheric Effects (1995-2001). In: Wunderman, R. (ed.), Bulletin of the Global Volcanism Network, 22:3. Smithsonian Institution.



Atmospheric Effects (1995-2001)

All times are local (unless otherwise noted)


Table 10 lists atmospheric data from Cuba, Hawaii, and Virginia. Lidar data from Cuba for 27 September through 19 December 1996 indicated a possible atmospheric layer centered between 13.6 and 20.5 km altitude. Lidar data from Hawaii for 3 July through 18 December indicated a possible atmospheric layer centered between 21.7 and 28.0 km altitude. Lidar data from Virginia (USA) for 26 February through 3 April indicated a possible atmospheric layer centered between 15.5 and 20.5 km altitude.

Table 10. Lidar data collected for Cuba (1996), Hawaii (1996) and Virginia (1997), showing altitudes of aerosol layers. Backscattering ratios from Camagüey are for the Nd-YAG wavelength of 0.53 µm; those from Mauna Loa and Hampton are for the ruby wavelength of 0.69 µm. Integrated values show total backscatter, expressed in steradians-1, integrated over 300-m intervals from 16-33 km for Cuba, 15.8-33 km for Hawaii, and from the tropopause to 30 km for Virginia. For Cuba, only bases of the layers are shown. Courtesy of Rene Estevan Arredenta, John Barnes, and Mary Osborne.

DATE LAYER ALTITUDE (km) (peak) BACKSCATTERING RATIO BACKSCATTERING INTEGRATED
Camaguey, Cuba (21.2°N, 77.5°W)
27 Sep 1996 9.1 (16.3) 1.37 2.28 x 10-4
25 Oct 1996 15.1 (20.5) 1.21 1.00 x 10-4
30 Oct 1996 8.8 (19.0) 1.52 5.40 x 10-4
08 Nov 1996 9.4 (18.7) 1.45 3.54 x 10-4
01 Dec 1996 10.0 (18.1) 1.39 1.05 x 10-4
05 Dec 1996 9.4 (16.0) 1.31 2.14 x 10-4
11 Dec 1996 10.0 (18.1) 1.25 1.91 x 10-4
Mauna Loa, Hawaii (19.5°N, 155.6°W)
03 Jul 1996 16-28 (24.7) 1.22 0.48 x 10-4
10 Jul 1996 16-33 (24.1) 1.34 0.99 x 10-4
17 Jul 1996 6-34 (22.0) 1.29 0.83 x 10-4
01 Aug 1996 16-27 (25.3) 1.18 0.51 x 10-4
07 Aug 1996 16-32 (24.7) 1.36 0.88 x 10-4
20 Aug 1996 17-31 (24.4) 1.34 0.91 x 10-4
28 Aug 1996 16-31 (25.9) 1.28 0.67 x 10-4
04 Sep 1996 17-29 (23.5) 1.24 0.76 x 10-4
11 Sep 1996 17-30 (28.0) 1.40 0.88 x 10-4
18 Sep 1996 17-32 (24.1) 1.29 0.78 x 10-4
27 Sep 1996 17-32 (24.4) 1.28 0.73 x 10-4
02 Oct 1996 17-34 (25.3) 1.36 0.84 x 10-4
10 Oct 1996 16-34 (28.0) 1.38 0.97 x 10-4
17 Oct 1996 16-33 (25.0) 1.38 0.93 x 10-4
31 Oct 1996 16-32 (22.1) 1.30 0.95 x 10-4
27 Nov 1996 15-30 (24.4) 1.40 1.19 x 10-4
04 Dec 1996 17-34 (23.8) 1.28 0.63 x 10-4
10 Dec 1996 16-34 (25.0) 1.37 1.00 x 10-4
18 Dec 1996 16-34 (21.7) 1.45 1.20 x 10-4
Hampton, Virginia (37.1°N, 76.3°W)
26 Feb 1997 11-25 (19.6) 1.18 0.818 x 10-4
13 Mar 1997 11-25 (15.5) 1.15 0.562 x 10-4
21 Mar 1997 11-25 (16.1) 1.15 0.536 x 10-4
25 Mar 1997 13-25 (17.3) 1.16 0.508 x 10-4
03 Apr 1997 10-25 (20.5) 1.17 0.645 x 10-4

Information Contacts: Rene Estevan Arredondo, Centro Meterorologico de Camag├╝ey, Apartado 134, Camaguey 70100, Cuba; John Barnes, Mauna Loa Observatory, P.O. Box 275, Hilo, HI 96720 USA; Mary Osborn, NASA Langley Research Center (LaRC), Hampton, VA 23665 USA.