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IOM Report, 131. WMO Solid Precipitation Intercomparison Experiment (SPICE) (2012 - 2015)
The Solid Precipitation Intercomparison Experiment (SPICE) was conducted as an internationally coordinated project, initiated and guided by the Commission for Instruments and Methods of Observation (CIMO) of the World Meteorological Organization (WMO). The SPICE field experiments took place between 2013 and 2015, with a preparatory stage during the winter of 2012/13.
SPICE was carried out as a major international effort, and has been remarkable for the diversity of organizations which hosted SPICE tests, contributed with instruments, and were engaged in the data analysis and the derivat ...
IOM Report, 130. Fourth WMO Regional Pyrheliometer Comparison of RA II, Jointly held with RA V
This report describes the intercomparison in detail: the instruments, the participants, the experimental setup, method and procedure, the data analysis technique used and the results. It is clear from the results that all of the participating instruments have been well maintained and remained stable since the previous intercomparison, which augers well for all radiation measurements within RA II and RA V. All participants were able to return home with newly derived WRR reduction factors for their instruments.
IOM Report, 128. Interlaboratory Comparison in the field of Temperature, Humidity and Pressure, in the WMO Regional Association VI (MM-ILC-2015-THP)
The subject of this report is evaluation of the interlaboratory comparison in the field of measurement of temperature, humidity and pressure. The interlaboratory comparison was held within the framework of the MeteoMet 2 project, in the scope of proficiency testing scheme organized by the University of Ljubljana, Faculty of Electrical Engineering, Laboratory of Metrology and Quality (UL-FE/LMK), except pressure part. All the analysis were done in accordance with accredited procedures.
IOM Report, 126. Quality Assessment using METEO-Cert : The MeteoSwiss Classification Procedure for Automatic Weather Stations
It this report, METEO-Cert and its application is described. The METEO-Cert process assigns qualitative flags to each station and its instruments. Those qualitative flags provide valuable information on the applicability of the measured data and help to identify potential improvement of the station’s exposure.
IOM Report, 123. Currently Developing and Future Communications and Technology Impact on AMDAR
This document has been prepared in the frame of WMO study SSA-2604-14/REM/PEX, for which the objective is to assess currently developing and future communications and technology impacts on AMDAR.
IOM Report, 121. Measurement of upper-air pressure, temperature and humidity
This report is that document, as authored by Dr Nash, in all its original detail. Starting with the existing version of the CIMO Guide (2010 update) Dr Nash revised that information, primarily to include the additional understanding gained from the Yangjiang intercomparison. At the same time, though, he added a wealth of further specialist knowledge, gained from his protracted involvement in WMO CIMO activities over more than thirty years, and in particular from his participation in all eight CIMO international radiosonde intercomparisons, commencing with the first, held at Bracknell in 1983.
IOM Report, 117. Survey on Alternatives for Dangerous and Obsolete Instruments : evaluation of the questionnaire and recommendations for alternatives
The report enables a WMO Member country to determine where it stands in relation to other WMO Members in regard to its use of dangerous or obsolete instrumentation, and offers some ideas on how to replace these instruments by suggesting possible alternatives.
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