What's New?

Software Changes - Updates to NWS Upper-air data processing software

Data Changes - Changes in upper-air data reporting practices

Equipment Changes - Changes in radiosondes or ground equipment

Upper-air Policy and Procedures

Radiosonde Instructions - How to prepare the new Vaisala RS80-57H radiosonde
Click here to download a WordPerfect version of the instructions

Upper-air Station Information

Network Maps - Maps showing station locations

Publications

FMH #3 - Federal Meteorological Handbook #3 - Rawinsonde and Pibal Observations 

NWSM 10 1401 Rawinsonde Observations   This upper air manual replaces NWS Observing Handbook #10,  Rawinsonde Observations, dated October, 2005.

Scroll down to  "NDS 10-14 Upper Air Program" and then select,   "10-1401 Rawinsonde Observations".

The file is in PDF format.

Engineering Documentation - Modification notes, maintenance schedules, handbooks,  and information on upper-air expendables and equipment stock numbers 

ART Radiosonde Solicitation Copy - RDF Radiosonde Specification Requirements

1999 AMS Conference - NWS Chamber Tests of Radiosonde Relative Humidity Sensors

1999 AMS Conference - Lessons Learned on Balloon Inflation and Launch Shelters

Background - History of upper-air observations