Instruments and Methods of Observation Programme (IMOP) | World Metereological Organization

Welcome to the new WMO Community Platform!

We are currently migrating all the content from the legacy system and you might find incomplete pages. The legacy system is still available here.

If you find any issue with the new system or you want to send some feedback please send an email to community@wmo.int

Instruments and Methods of Observation Programme (IMOP)

The Instruments and Methods of Observation Programme (IMOP) sets technical standards, quality control procedures and guidance for the use of meteorological instruments and observation methods in order to promote development documentation and world-wide standardization.

Instruments and Methods of Observation Programme

About IMOP

Purpose and Scope

Working structure

About Working structure

Publications

Publications

WMO-No. 8 (the CIMO Guide) - Edition 2018

WMO-No. 8 - Preliminary 2020 Edition

IOM Report Series

International Cloud Atlas

AWS Tender Specifications - for testing

Draft common WMO/ISO standard on Weather radars - for Members' review

Knowledge-sharing Portal

Relevant material

Knowledge-sharing Portal

Information Flyer on Traceability

Intercomparisons

About intercomparisons

Intercomparisons

Short Film on IPC-XII (12 min)

Other resources & events

Other resources and events

Siting Classification for Surface Observing Stations on Land

Monitoring Reports/Statistics

CIMO Newsletters

Final Reports of CIMO-related Meetings

Radiosonde Catalogue

Regional Instrument Centres

About RICs

Regional Instrument Centres

Radiation Centres

About RCs

Radiation Centres

CIMO Testbeds and Lead Centres

About TBs and LCs

CIMO Testbeds and Lead Centres

Related news

WMO Technical Conference on Meteorological and Environmental Instruments and Methods of Observation (TECO-2020)

WMO-No. 8 - Preliminary 2020 Edition - ready for Members' review

Active meetings

Upcoming meetings

Past meetings