Vortex-SE 2017 UMass CL-31 Ceilometer Data


Stephen Frasier, Joseph Waldinger, William Heberling

University of Massachusetts
Microwave Remote Sensing Laboratory
151 Holdsworth Way
Amherst, MA 01003
(413) 545-0779

frasier@umass.edu
jwaldinger@umass.edu


Robin Tanamachi, Dan Dawson

Department of Earth, Atmospheric, and Planetary Sciences (EAPS)
Purdue University
550 Stadium Mall Drive
West Lafayette, IN 47907
(765) 496-2866

rtanamachi@purdue.edu
dandawson@purdue.edu


Data Contact:  frasier@umass.edu



1.0 Data Set Overview

Vertical profiles of attenuated backscatter over the period 
3/10/2017--4/30/2017 collected by the UMass CL-31 Ceilometer (colocated 
with the S-band FMCW profiling radar).
The ceilometer was located at the Scottsboro, AL Municipal Airport.  



2.0 Instrument Description

It's a Vaisala CL-31 lidar ceilometer. 


3.0 Data Collection & Processing

Operating mode was 770 range bins of 10 m with 15 second averaging.



4.0 Data Format

Data are native ascii as output from the lidar ("Message 11" as described
in the Vaisala CL-31 User's Guide) with one modification:  The checksum 
ending each message is replaced with a Unix timestamp.



5.0 Data Remarks



6.0 References

Vaisala CL-31 Users Guide