1. Atmospheric Sciences Research Center; State University of New York; Albany New York USA
2. Kipp & Zonen, Inc.; Bohemia New York USA and Delft, Netherlands
3. Climate Monitoring and Diagnostics Laboratory; National Oceanic and Atmospheric Administration; Boulder Colorado USA
4. Virginia Polytechnic Institute and State University; Blacksburg Virginia USA
5. Budapest University of Economic Sciences and Public Administration; Budapest Hungary
6. Pacific Northwest National Laboratory; Richland Washington USA
7. The Eppley Laboratory, Inc.; Newport Rhode Island USA
8. Yankee Environmental Systems, Inc.; Turners Falls Massachusetts USA
9. Carter-Scott Design; Brunswick Victoria Australia
10. Meteorological Service of Canada; Downsview Ontario Canada
11. Physikalisch-Meteorologisches Observatorium and World Radiation Center; Davos Switzerland
12. National Renewable Energy Laboratory; Golden Colorado USA