Ground-Based Lidar Measurements of Aerosols During ACE-2: Instrument Description, Results, and Comparisons with Other Ground-Based and Airborne Measurements
Welton, Ellsworth J.
Voss, Kenneth J.
Gordon, Howard R.
Livingston, John M.
Russell, Philip B.
Durkee, Philip A.
MetadataShow full item record
A micro-pulse lidar system (MPL) was used to measure the vertical and horizontal distribution of aerosols during the Aerosol Characterization Experiment 2 (ACE-2) in June and July of 1997. The MPL measurements were made at the Izana observatory (IZO), a weather station located on a mountain ridge (28 deg 18 min N, 16 deg 30 min W, 2367 m asl) near the center of the island of Tenerife, Canary Islands. The MPL was used to acquire aerosol backscatter, extinction, and optical depth profiles for normal background periods and periods influenced by Saharan dust from North Africa. System tests and calibration procedures are discussed, and an analysis of aerosol optical profiles acquired during ACE-2 is presented. MPL data taken during normal IZO conditions (no dust) showed that upslope aerosols appeared during the day and dissipated at night and that the layers were mostly confined to altitudes a few hundred meters above IZO. MPL data taken during a Saharan dust episode on 17 July showed that peak aerosol extinction values were an order of magnitude greater than molecular scattering over IZO, and that the dust layers extended to 5 km asl. The value of the dust backscatter-extinction ratio was determined to be 0.027 +/- 0.007 sr(exp -1). Comparisons of the MPL data with data from other collocated instruments showed good agreement during the dust episode.
The article of record as published may be found at http://dx.doi.org/10.1034/j.1600-0889.2000.00025.xApproved for public release, distribution unlimited
Showing items related by title, author, creator and subject.
Evaluation of Daytime measurements of Aerosols and Water Vapor made by an Operational Raman Lidar over the Southern Great Plains Ferrare, Richard; Turner, David; Clayton, Marian; Schmid, Beat; Redemann, Jens; Covert, David; Elleman, Robert; Ogren, John; Andrews, Elisabeth; Goldsmith, John E.M.; Jonsson, Haflidi (2006);Raman lidar water vapor and aerosol extinction profiles acquired during the daytime over the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site in northern Oklahoma (36.606 ...
Characterization of ambient aerosol from measurements of cloud condensation nuclei during the 2003 Atmospheric Radiation Measurement Aerosol Intensive Observational Period at the Southern Great Plains site in Oklahoma Rissman, T. A.; VanReken, T. M.; Wang, J.; Gasparini, R.; Collins, D. R.; Jonsson, H.H.; Brechtel, F. J.; Flagan, R. C.; Seinfeld, J. H. (2006);Measurements were made by a new cloud condensation nuclei (CCN) instrument (CCNC3) during the Atmospheric Radiation Measurement (ARM) Program’s Aerosol Intensive Observational Period (IOP) in May 2003 in Lamont, Oklahoma. ...
Evolution of the stratospheric aerosol in the northern hemisphere following the June 1991 volcanic eruption of Mount Pinatubo: Role of tropospheric-stratospheric exchange and transport Jonsson, H.H.; Wilson, James, C.; Brock, Charles A.; Dye, J.E.; Ferry, G.V.; Chan, K.R. (1996-01);Since the eruption of Mount Pinatubo in June 1991, measurements of particle size and concentration have intermittently been carried out from an ER-2 aircraft at altitudes of up to 21 km at midlatitudes and high latitudes ...