SGP/NWS/X1 - Six second soundings upgraded to one second soundings for Norman, OK

On November 13, 2006 the Norman, OK changed over to the Radiosonde Replacement System 
(RRS).  With the change to RRS there were some changes in the instrumentation and data 
processing:
1) The winds are now from a GPS.
2) The data are now at 1 second vertical resolution.
3) There is some additional information in the header records.
4) The smoothed and processed version of the data have been used. Corrections, such as the 
solar radiation correction, have been applied. 

Additional details available in http://www.arm.gov/xds/static/nwsupa.stm under Data User 
Notes.

After October 31, 2006 the name of the datastream changed from sgp06snwsupaounX1.b1 to 
sgp01snwsupaounX1.b1

• (Raw data stream - documentation not supported)

• Relative Humidity (hybrid-b grid)(rh)
• Azimuth(azi)
• base time in epoch(base_time)
• lon(lon)
• V wind component(v_wind)
• time_in_seconds_since_volume_start(time)
• Wind Direction(deg)
• -180.0 - +180.0(alt)
• Dry Bulb Temperature(tdry)
• North Latitude(lat)
• Retrieved pressure profile(pres)
• Time offset from base_time(time_offset)
• Easterly Wind Component(u_wind)
• Dewpoint Temperature(dp)
• Ascension Rate(wcmp)
• Wind Speed(wspd)