UND Sodar/RASS README

Author: 
 Laura S. Leo
ORCID: 
 http://orcid.org/0000-0003-4103-6862
email: 
 lleo1@nd.edu
Institution: 
 University of Notre Dame 

1.  Dataset Overview
 - These data provide vertical mean profiles of wind speed, wind direction and RASS temperature
 - Average Interval: 30 minutes time step and 10 meters range gate.
 - Time period covered: 2017/05/01 - 2017/06/19
 - Physical location:
		PT-TM06/ETRS89: 34606.963, 6117.905, 
		WGS84 Lon/Lat:7°43'46.11"W 39°43'21.57"N
		Elevation: 258.447 m
 - DOI: https://doi.org/10.5065/D6TQ609X

2.  Instrument  
    Scintec MFAS Wind Profiler with RASS

3.  Data Collection and Processing
Data quality procedure applied to this dataset is through the Sodar Operation software/firmware (APRun 1.48 by Scintec).
APRun calculates wind speed, temperature, and all other output data from the raw data received from the device server during measurement. Raw data contain raw received signal data (Fourier power spectra) obtained during measurement. The raw data are filtered, preprocessed, and averaged over one full averaging interval (30 minutes). Various corrections and filters are applied, such as ground clutter detection and removal. All signals of the different subcycles, measurement beams, and acoustic frequencies are decoded and combined according to a composition matrix (Composit Construction Table). A pattern recognition and fit procedure obtains primary results for wind components and signal quality scores.
The primary results are checked against local signal quality criteria, combined signal quality criteria, and two-dimensional spatial/temporal consistency tests.


4.  Data Format
	-Data file structure: column delimited ASCII. Each file contains 24-hours of data collections.
	-File name represents the date of collection. For example: 170502.txt represents data collected during the year 2017,month 05, day 02
	-Time is UTC and represents the end of averaging interval. Each file contains 24-hours of data collections. 
	-Wind Direction is from Geographic North
	-List of parameters is given in the file header.
	-Data that do not pass all quality control tests are invalidated and replaced by the symbol "*"