UND Radiosonde Data 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
 - Radiosonde data collected at multiple locations, as detailed below. 
 - Time period covered: 2017/05/08 - 2017/06/19
 - Physical locations (also included in each data file):
	(a)NEsiteMWR: east of the double ridge, in proximity of UND microwave radiometer.
					  PT-TM06/ETRS89: 34651.071,6170.539         
					  WGS84 Lon/Lat:7°43'44.25"W, 39°43'23.27"N
					  Elevation: 259.831 m
	(b)NEsiteTLS:     east of the double ridge, in proximity of  ARL Tethered Lifting System.
					  PT-TM06/ETRS89: 34462.563, 6069.349         
					  WGS84 Lon/Lat:7°43'52.18"W, 39°43'20.02"N
					  Elevation: 260.294 m					  
	(c)SWsite:        west of the double ridge, in proximity of DLR microwave radiometer.
					  PT-TM06/ETRS89: 31667.272,3745.005                 
					  WGS84 Lon/Lat:7°45'49.95"W, 39°42'5.05"N
					  Elevation: 222.875 m					  
	(d)VALsiteOrange: orange grove site in the center of the Vale do Cobrao, in proximity of OU CLAMPS microwave radiometer.
					  PT-TM06/ETRS89: 33948.340, 5004.683                         
					  WGS84 Lon/Lat:7°44'13.97"W 39°42'45.57"N
					  Elevation: 296.140 m					  
					  
2.  Instrument  
The University of Notre Dame (ND) radiosonde system is an IMET-3050A 403 MHZ GPS, consisting of the following components: 
(i)   403 MHz Omni-Directional Antenna and Receiver Assembly,
(ii)  403 Power-Comms Cable,
(iii) PSU/Data Converter,
(iv)  USB Cable,
(v)   Tripod,
(vi)  laptop. 
An iMet-1-ABxn 403 MHz GPS Radiosonde, including solid state pressure sensor, is used to obtain thermodynamic measurements and GPS winds. 
Balloon specifications are: Totex 200gr balloon with dereeler and parachute.

3.  Data Collection and Processing
Sounding thermodynamic data measured by the radiosonde are collected and processed by the iMetOS-II software package.
Note that the average radiosonde readings over the past few seconds were used for temperature, relative humidity and pressure surface data. 

4.  Data Format
	-Data file structure: column delimited ASCII.
	-File name includes the date of sounding, approximate time of launch, launch site name. 
	-Launch information given in the file header.
	-Missing data replaced by  "//" or "-9999"