Instruments:uilhna

From CedarWiki
Jump to: navigation, search
Eosl logo1.gif

University of Illinois Sodium Lidar at Hawaii

Contents


Contact Persons

Web Sites

Instrument/Model Description

This data set was taken by the University of Illinois sodium (Na) lidar team in support of the ALOHA-90 (Airborne Lidar and Observations of the Hawaiian Airglow) campaign carried out via airplane around Hawaii (20N, 155W). The data were taken by Chris Hostetler c.a.hostetler@larc.nasa.gov.

The operating wavelength was 589 nm with a range resolution of 37.5 meters and an integration period of approximately 12.82 seconds. This integration period corresponds to 2500 laser pulses. In the sodium lidar mode, data were obtained at altitudes between 75 and 110 km, while in the rayleigh lidar mode, data were obtained at altitudes between 20 and 70 km. Approximately 5 seconds are required to store each profile before beginning the next integration period. The lidar pointing was fixed at the zenith.

Summary plots of the mean sodium density between 70 and 120 km for 2 different nights are provided, with the relative neutral density between 20 and 70 km below each sodium density plot. The density is relative to the neutral density around 35 km. Bin sizes are 15 min in time and 0.5 km in height for the sodium density and 2.5 km in height for the relative neutral density.

ALOHA-90 Lidar References

C. S. Gardner, "Introduction to ALOHA-90: The Airborne Lidar and Observations of the Hawaiian Airglow Campaign", Geophys. Res. Lett., ALOHA-90 Special Issue, vol. 18, no 7, pp. 1313-1316, July 1991.
C. S. Gardner, T. J. Kane, J. H. Hecht, R. L. Walterscheid, J. H. Yee, R. J. Niciejewski, R. P. Lowe, and D. N. Turnbull, "Formation characteristics of sporadic Na layers observed simultaneously by lidar and airglow instruments during ALOHA-90", Geophys. Res. Lett., ALOHA-90 Special Issue, vol. 18, no. 7, pp. 1369-1372, July 1991.
C. A. Hostetler and C. S. Gardner, "Observations of Horizontal and Vertical Wave Number Spectra of Gravity Wave Motions in the Stratosphere and Mesosphere over the Mid-Pacific", J. Geophys. Res., vol 99, number D1, pp. 1283-1302, January 20, 1994.
C. A. Hostetler, C. S. Gardner, D. Lesicar and R. Vincent, "Spectra of gravity wave density and wind perturbations observed during ALOHA-90 on the 25 March flight from Maui to Christmas Island", Geophys. Res. Lett., ALOHA-90 Special Issue, vol. 18, no. 7, pp. 1325-1328, July 1991.
T. J. Kane, C. A. Hostetler and C. S. Gardner, "Horizontal and vertical structure of the major sporadic sodium layers observed during ALOHA-90", Geophys. Res. Lett., ALOHA-90 Special Issue, vol. 18, no. 7, pp. 1365-1368, July 1991.
C. Y. She, J. R. Yu, J. W. Huang, C. Nagasawa and C. S. Gardner, "Na temperature lidar measurements of gravity wave perturbations of wind density and temperature in the mesopause region", Geophys. Res. Lett., ALOHA-90 Special Issue, vol. 18, no. 7, pp. 1329-1331, July 1991.

Summary Plots for University of Illinois Sodium Lidar at Hawaii

  • 1990, Mar 19-20, 22-23
  • 1990, Mar 25-26, 27-28
  • 1990, Mar 29-30, 31-Apr 01
  • 1990, Apr 03-04, 06-07
  • 1990, Apr 09-10

--Revised 24 Aug 2005 by Barbara Emery