Meeting of the CIMO Expert Team on Standardization, First Session (First Session)
This first session of the CIMO Expert Team on Standardization was held from 26 to
29 November 2012 at the WMO Headquarters in Geneva, Switzerland.
The meeting followed up on the matter of the Siting Classification for Surface
Observing Station on Land that was published in the WMO Guide to Meteorological
Instruments and Methods of Observation (WMO-No. 8, CIMO Guide). It agreed on a way to
provide clarifications on how to interpret and apply the classification through a question and
answer website. It also reviewed the process for further developing this classification as a
common WMO-ISO standard and recommended that ISO TC146/SC5 adopt it “as is” through
the ISO Fast-track procedure.
The meeting reviewed a number of draft standards, including the Sustained
Performance Classification for Surface Observing Station on Land, a draft metadata standard
and a draft Classification of Rain Intensity Measurement Instruments Based on their
Accuracy under Standardised Calibration Tests.
The meeting also addressed the matter of collaboration with ISO for the update of
solar radiation standards under ISO TC180/SC1, which is chaired by one member of CIMO
The meeting reviewed draft updates of various CIMO Guide chapters.
Finally, the meeting reviewed its workplan to ensure it supports the development of
the WIGOS contributing to the activities listed in the WIGOS Implementation Plan (WIP). It
noted that all its activities were clearly linked to one or more activities of the WIP and
included an additional action to support the development of the WIGOS regulatory material