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For further information on
WMO Intercomparisons please go to the Commission for Instruments and
Methods of Observations Programme web page:
http://www.wmo.int/pages/prog/www/IMOP/intercomparisons.html
UPCOMING/CURRENT INTERCOMPARISONS
Arctic Intercomparison of Screens, Temperature and Humidity Sensors,
Canada, 2011
A follow up Intercomparison of screens, temperature and humidity sensors
is planned to be held in a cold locality, namely the Arctic, starting in
the spring of 2011. Canada has volunteered to host this Intercomparison.
It is hoped that the participants will be the same as those in the
recently finished Ghardaïa, Algeria Intercomparison.
WMO Intercomparison of Radiosondes in
China
The report of the CIMO Expert Team on Upper-Air Systems
Intercomparisons and International Organizing Committee on Upper-Air
Systems Intercomparisons that was held in Yangjiang, China, from
31 August to 4 September 2009 is now available on the WMO website under:
http://www.wmo.int/pages/prog/www/IMOP/reports.html.
There is a 'pre-planning' manufacturers meeting planned to be held
on 27th-28th January, (to include all participants if possible).
This is expected to be held in Geneva or Exeter UK. Invitations to participants will be
sent in due course.
LUAMI (Lindenberg Upper_Air Methods Intercomparison) Campaign in
Lindenberg, Germany, 3-24 November 2008
At the meeting, just held 2-6 June, of the CIMO ET on Upper-air
Systems Intercomparisons and IOC on Upper-air Systems Intercomparisons
in Payerne, Switzerland, it was decided that WMO would support an
Intercomparison Campaign to be held 3-24 November this year in
Lindenberg Germany.
Seven HMEI Member Radiosonde manufacturers attended this meeting (for
which there will be short HMEI report published on our website next
month). During the meeting the Lindenberg Upper-Air Methods
Intercomparison was addressed. Discussion focused, in part, on the
concern about the short notice given to manufacturers for the
organization of the Intercomparison. The Intercomparison is a GRUAN
initiative which wishes to look at instrumentation suitable for GRUAN
stations.
Three HMEI Members manufacturers have currently confirmed they will
participate in the Intercomparison: Graw; Leosphere; and
Vaisala.
The
brochure for the LUAMI Campaign is available here. Any manufacturers
wishing to be involved in this campaign please contact Franz Immler at:
franz.immler@dwd.de, with a cc
email please to HMEI at hmei@wmo.int.
WMO
Combined Intercomparison of Thermometer Screens/Shields in Conjunction
with Humidity Measuring Instruments
Ghardaïa,
Algeria, beginning
2007 – 2008
HMEI Members with instruments selected for participation this Intercomparison from the recommendation of HMEI in are:
Metspec - UK
R. M. Young - USA
Sutron Corp. - USA
Vector Instruments (Windspeed Ltd.) - UK
HMEI members with instruments selected from Met Agencies recommendation are:
CAE - Italy
Casell - UK
Lambrecht - Germany
Meteolabor - Switzerland
Rotronic - Switzerland
Vaisala - Finland
Out of 36 instruments in total proposed only 18 were accepted due to the space restrictions on the test
site.
For a full list of accepted instrument please go to:
http://www.wmo.int/pages/prog/www/IMOP/intercomparisons.html
WMO
Field Intercomparison of Rainfall Intensity Instruments, Vigna di Valle, Italy, mid 2007 – mid 2008This WMO Field Intercomparison of RI Gauges follows on from the WMO Laboratory Intercomparisons of RI Gauges in 2005.
Out of 50 instruments proposed, 24 were accepted for the Intercomparison, 16 of these are from HMEI Members.
HMEI Members with Instruments selected for this Intercomparison are:
ATTEX
PVK - two
instruments
CAE S.p.A. - one
instrument
Davis Instruments - one instrument
Eigenbrodt -
one instrument
Environmental Measurements - one instrumnt
GEONOR AS -
one instrumente
LSI LASTEM -
one instrument
METEOSERVIS v.o.s. -
one instrument
McVan Instruments
-
two instruments
MPS System -
one instrument
OTT - two
instruments
Précis-Mecanique Exploitation
- one instrument
SIAP+MICROS Srl
- one instrument
THIES - two instruments
Vaisala
OJY
- three instruments
Other manufacturers each with an instrument selected were:
ETG s.r.l.
EWS Ltd
KNMI
LUFFT
PAAR
AS "MIRRAD"
Some of the instruments selected were suggested by Met Services, others were selected as a
result of suggestion from HMEI.
Please go to the appropriate entry on the CIMO/IMOP webpage:
http://www.wmo.int/pages/prog/www/IMOP/intercomparisons.html
for complete details on the instruments selected.
A Meeting of Participants in the Vigna di Valle Intercomparison was
held 21-22 May 2008. This was also attended by the HMEI Secretariat at
the invitation of Dr Vuerich the Intercomparison
Site Manager
Please see here for the HMEI report of this meeting.
PREVIOUS INTERCOMPARISONS
The
10th International and Regional Pyrheliometer Intercomparison (IPC-X, RPCs) held in Davos, Switzerland, 26th September to 14 October 2005.
Whilst this Intercomparison was mainly by invitation to National
Radiation Centers for calibration of their instruments, some manufacturers also participated, depending on space available.
HMEI Member companies Kipp
and Zonen and Cimel Electronique had instruments at this Intercomparison.
The Final Report IPC-X is available at:
http://www.wmo.int/pages/prog/www/IMOP/intercomparisons.html
WMO Laboratory
Intercomparison
of Rainfall Intensity (RI) Gauges, 15 September 2004 to
14 March 2005.
RIs tested, as indicated in the listing below, in Laboratories in France (FR),
Italy (IT)
and Netherlands (NL).
The
project leader was Prof Luca Lanza at the Universita'
di Genova, Dipartimento
di Ingegneria Ambientale (DIAM)
HMEI manufacturers
who participated as follows:
- OTT Hydrometrie ------------------- Model: Pluvio 250mm (Weighing)
-
Cassella CEL Ltd. ------------------- Model: 100000E (Tipping Bucket)
- Design Analysis Associates ---- Model:
H-340-SDI (Tipping Bucket)
- SIAP+MICROS
----------------------- Model: UM7525 (Tipping Bucket)
- CAE Srl ---------------------------------- Model: PMB2 (Tipping
Bucket)
- MPS system s.r.o.-------------------- Model: TRwS (Weighing)
- Hydrological Services --------------- Model: TB-3 (Tipping Bucket)
- Vaisala OYJ
---------------------------- Model: VRG101 (Weighing)
-
Yokogawa Denshikiki Co.---------- Model: WMB01 (Tipping Bucket)
- Geonor AS ------------------------------ Model: T-200B (Weighing)
- Wih Lambrecht-------------------------Model: 1518 H3 (Tipping Bucket)
Full details about
this Intercomparison, the Laboratories and all the instruments who participated are available
from the appropriate links at:
http://www.wmo.int/pages/prog/www/IMOP/intercomparisons.html
The Final Report IPC-X is available at:
http://www.wmo.int/pages/prog/www/IMOP/reports/2003-2007/RI-IC_Final_Report.pdf
WMO
Intercomparison of High Quality Radiosonde Systems in Mauritius - February
2005
Letter of thanks and appreciation
to HMEI from the WMO
The WMO preliminary
findings report is available at:
http://www.wmo.int/pages/prog/www/IMOP/meetings/Upper-Air/RSO-ComparisonMauritius/3(16)_UK_Nash_Vacoas.pdf
This
Intercomparison was organized at the March 2004 Joint
WMO/CIMO ET Meeting on Upper-Air Systems Intercomparisons
The Project
Manager was Dr
Beenay Pathack of the Meteorological services in Mauritius, the host
country.
The following
tables give details of the participants and the procedures of the
Intercomparison.
Demonstration test of InterMet IMS 1600 Integrated Upper Air System, Dar-es-Salaam,
Tanzania, 18-30 October 2004
This test was performed to demonstrate that:
(1) The InterMet IMS 1600 Integrated Upper Air System was able to measure winds
to a satisfactory operational accuracy
(2) Temperature and humidity measurements from Sippican and Modem
radiosondes were of the quality expected from these radiosondes.
It was also intended as an opportunity for the staff from Tanzania to work with staff from
the UK and USA to develop their upper air observation skills.
For the full report please go to:
http://www.wmo.int/pages/prog//www/IMOP/reports/2003-2007/Tanzania_Demo%20Test.pdf
InterMet response
to the WMO report.
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