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

• null(Raw data stream - documentation not supported)

• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• Wind Direction(deg)
• Dummy altitude for Zeb(alt)
• Dry bulb temperature(tdry)
• Ascension Rate(wcmp)
• Relative humidity inside the instrument enclosure(rh)
• time(time)
• V-component(v_wind)
• Mean Wind Speed(wspd)
• Surface dew point temperature(dp)
• Azimuth(azi)
• base time(base_time)
• U-component(u_wind)
• lat(lat)
• lon(lon)