STORM-Fronts Experiment Systems Test (STORM-FEST) 10-mb Sounding Composite Dataset (1992) for the U.S.

The composite consists of 10mb vertical resolution soundings appended into daily files. Each file contains all soundings for one day and are sorted by time, station latitude, and station longitude. Version 2 contains additional soundings from other upper air stations.

These include the NCAR/NSSL special CLASS stations; rawinsonde data from the NPS 'Picket Fence', Military sites, Canadian sites and Dropsonde data (both military and NCAR). Nominal time of the sounding is included in the CLASS format. The sounding composite dataset contains data from the NCAR CLASS Soundings, Atmospheric Environment Service Canadian Soundings, NCAR L2D2 Dropsondes, National Weather Service (NWS) Rawinsonde Data, Pacific Military Dropwindsondes, Naval Post Graduate School (NPGS) Picket Fence Soundings, Ft.

Sill Soundings, and the Flatlands Soundings. The parameters include nominal date of launch, nominal time of launch, actual date of launch, actual time of launch, network identifier, station identifier, latitude, longitude, station occurrence, station elevation, time, pressure, dry-bulb temperature, dew point, relative humidity, u wind component, v wind component, wind speed, wind direction, ascension rate (dz), altitude, and qc for pressure, temperature, humidity, u component, v component, and ascension rate.

Parameter notes: 1. The nominal date and time differs from the actual time of a sounding launch. The nominal data and time is the actual time rounded to the nearest hour.

Actual times may vary a few minutes before or after nominal time. 2. The station occurance is a uniqueness code to separate two different stations that may be co-located in the same latitude/longitude point. 3. Not all platforms report these parameters.

If not available for a network the value was set to missing and the QC flag to "not observed". 4. Currently, QC for ascension rate and the two fields between latitude and altitude are not used.