Intercomparisons

 

 

 

Letter of Announcement (June 2021)
English    French   Spanish    Russian    Arabic  Chinese

  • Annex I - List of WMO Regional Radiaton Centres (RRCc)
  • Annex II - Questionnaire - Request for financial support for participation at IPC-XIII and the RPCs
  • Annex III - Questionnaire for Regional Radiation Centres

Online Registratin at PMOD/WRC:  https://www.pmodwrc.ch/

 
 

WMO Combined Intercomparison of Thermometer Screens/Shields in Conjunction with Humidity Measuring Instruments. --Ghardaïa, Algeria, mid 2008– mid 2009

 Announcements and Planning

Letter of
Announcement

Questionnaire I to potential participants

Operational Aspects of the  Intercomparison

Planning

Selected Instruments

Questionnaire II to selected participants

 
 
 
 Progress Reports

Report of the Project Leader (in French only)

Progress Report- I 
(March 2007)

 
 

 

FINAL REPORT

 

WMO Field Intercomparison of Rainfall Intensity Instruments 
Vigna di Valle, Italy
mid 2007– mid 2008

 Announcements and Planning

Letter of
Announcement

Questionnaire I to potential participants

Operational Aspects of the  Intercomparison

Data Acquisition System

Selected Instruments

Questionnaire II to selected participants

 
 

Instruction on shipment of instruments 

Summary          Letter-1          Letter-2         Letter-3          Pro-Forma Invoice  

Further instruction to participants

Letter of the Project Leader         FAQ

Meeting of the Participants (21-22 May 2008)

 
Reports

Final Report

  

Annex IV Customs Procedures

 

10th International and Regional
Pyrheliometer Intercomparisons (IPC-X, RPCs)
Davos, Switzerland
26 September - 14 October 2005

 Announcements and Planning

Letter of
Announcement

Annex I
List of RRCs

Annex II
Questionnaire on intended participation

 
 
 
 Progress Reports

List of Participants

Final Report ADC

Final Report

 

 

WMO Laboratory Intercomparison of Rainfall Intensity Gauges
France / Italy / Netherlands 
15 September 2004 – 15 August 2005

 Announcements and Planning

Rules and 
Procedures

Guidelines for
Participants

Participating 
Instruments

Lab addresses and contacts

Procedures for 
data analysis

Laboratory
 of Météo France

Laboratory of the
University of Genova

Laboratory
 of KNMI

 
 Progress Reports

Intercomparison  database (under preparation)

Final Report

 


About Instrument Intercomparisons

Comparison of sensors, instruments and equipment, which are operationally applied for measuring meteorological variables, are important means of determining their performance characteristics under in-situ (field) conditions. If required, additional tests are carried out in the laboratory.

For the organizational preparation of these tests, carried out under the auspices of WMO/SC-MINT either regionally or globally, and especially for determining the test- and data evaluation- conditions as well as for developing the rules for participation at the intercomparison, the president of INFCOM nominates recognized experts serving in an International Organizing Committee (IOC) which is established for each trial (see WMO-No. 8).

The results of intercomparisons are published in WMO’s Instrument and Observing Methods Report series (IOM Publications list).  These reports also contain guidelines for WMO Member countries on improving the data observed, and conclusions particularly useful for instrument developers and providers to improve, among others, the performance and /or the reliability of the equipment concerned.