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INTERCOMPARISON BETWEEN RA VI ( France, )
AND RA II (Australia)
REGIONAL INSTRUMENT CENTRES
ENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
Slovakia, Slovenia
4 W METHOD
W
W
W
W
HY
HO
ITH
HAT
WHY
METROLOGY LABORATORIES
MANUFACTURERS / PUBLIC
NATIONAL LABORATORY
BIPM
METROLOGY PYRAMID
WHY
NMHS
AWS / STATION
RIC
WMO
METEOROLOGY PYRAMID
WHY
DISSEMINATION TRACEABILITY
INTERCOMPARISON
WHY
WMO N°8 Guide to Meteorological Instruments And Methods of observation:
« Intercomparisons of instruments and observing systems, together with agreed quality control procedures, are essential for the establishment of compatible data sets. »
Term Of Reference for RICTerm Of Reference for RIC CapabilityCapability ““(f) A RIC must participate in, or organize inter-laboratory comparisons of (f) A RIC must participate in, or organize inter-laboratory comparisons of
standard calibration instruments and methods,standard calibration instruments and methods, » »
WHO
[email protected]@gov.si
[email protected] [email protected]
ENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
WHO
• Range: -30°C to +50°C,• Method of immediate comparison,• Reference standard: SPRT
Rosemount, model 162CE,• Resistance bridge: Hart Scientific,
model 1560, 2560 and 2562 for PRT calibrations,
• Standard resistors: 25, 100 Tinsley 5685A,
• Liquid bath Julabo FP40-HP,• Best Measure Capability 0.05°C.
TEMPERATURE
WHO
• Traceability to National Standard,• Range: 10% RH to 95% RH,• Method of immediate comparison,• Monitoring of the calibration process,• Best measure capability 2.5% RH
HYGROMETRY
WHO
Traceability to National Standard, Range: 600 hPa to 1100 hPa, Method of immediate comparison, Best Measure Capability is 0.11 hPa
PRESSURE
DH Instruments PPC2+
WHOENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
Environmental Agency of the Republic of Slovenia
Vojkova 1b1000 Ljubljana
Sloveniawww.arso.gov.si
WHOENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
HYGROMETRY
WHOENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
TEMPERATURE
WHOENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
PRESSURE
WHO
Quantities Range BMC (k=2)
Temperature
Water triple point 0.01 °C 1 mK
Gallium melting point 29.7646 °C 1.5 mK
Resistance thermometers -40 °C ÷ 50 °C 15 mK
Liguid-in-glass
thermometers
-20 °C ÷ 50 °C 70 mK
Thermographs -20 °C ÷ 0 °C
0 °C ÷ 50 °C
0.3 °C
0.2 °C
Relative humidity 10 % ÷ 95 % 3 %
Air pressure 600 hPa ÷ 1200 hPa 5.4·10-5·p + 5 Pa
Air quality quantities
CO concentration 0 -15 ppmv 0.07 ppm + 0.016 · cCO
SO2 concentration 0 - 500 ppbv 0.8 ppb + 0.021· cSO2
NO concentration 0 - 500 ppbv 0.9 ppb + 0.031· cNO
NO2 concentration 0 - 500 ppbv 1.5 ppb + 0.02 · cNO2
O3 concentration 0 - 500 ppbv 2.6 ppb + 0.024 · cO3
ENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
WHO
Bureau of MeteorologyGPO Box 1289
Melbourne VIC 3001Australia
Phone +03 9669 4000Fax +03 9669 4699
WHO
PRESSURE
WHO
WHO
WHO
Domain Type of standard Type Manufacturer Range U (k=2)95%
Temperature
ITS-90 fixed points Hg, H2O, Ga, In Isotech -38 – 156oC 20 mK
Pressure Dead Weight Tester Gas piston gauge
Ruska 500 – 1100 hPa
2 Pa
Humidity Dew Point Hygrometer
Chilled mirror Eastern General
DP -70 -+40 0.15oC DP
WHO
Météo-FranceDSO/LM
7 Rue Teisserenc de Bort78195 TRAPPES France
Phone +33130136350Fax +33130136020
WHO
HUMIDITY 11 % : LiCl 33 % : MgCl 54 % : N2O6Mg 75 % : NaCl 95 % : K2SO4
Uncertainty: 2.4 %
WHO
2 temperature benchHumidity generation with a circulating bench called “2 temperature bench”
From -50°C to +50°C From 0% to 99% Uncertainty 1.6 %.U
WHO
PRESSURE
range 500 to 1060 hPa Uncertainty: 8.8 + 5.4.10-5 P Pa.
WHO
TEMPERATURE
-50 à +50°C ASL resistor bridge Uncertainty 0.03 °C
WITH
Set of instruments developed by
Australian Bureau
WITH
THERMOMETER
Instrulab 4312A-15-07 (PT100)
WITH
HYGROMETER
Vaisala HM-70 humidity sensor
WITH
BAROMETER
PTB 220A 3 cells
WITH
NORMALISED BIAS
22
21
21
UU
BBBN
B1 and B2 are respectively the bias (True value – Instrument value)U1 and U2 are the associated expanded uncertainties.
WHAT
-0,15
-0,10
-0,05
0,00
0,05
0,10
0,15
0,20
0,25
0,30
France Australie Slovakia Slovenia
PRESSURE
PRESSURE (hPa)
BIAS (hPa)
WHAT
-4
-3
-2
-1
0
1
2
3
4
0 10 20 30 40 50 60 70 80 90 100
Correction Australie France salt France 2 temp Slovakia Slovenia
HUMIDITY
U (%)BIAS (%)
WHAT
-0.0020
-0.0010
0.0000
0.0010
0.0020
0.0030
0.0040
0.0050
0.0060
0.0070
0.0080
0.0090
-60 -40 -20 0 20 40 60
AUSTRALIA
SLOVAKIA
SLOVENIA
FRANCE
TEMPERATURE
(°C)
BIAS (°C)
CONCLUSION
RIC’s UNCERTAINTIES
PRESSURE TEMPERATURE HUMIDITY
AUSTRALIA 0.06 0.02 1
SLOVENIA 0.05 0.02 2.4
SLOVAKIA 0.12 0.05 2.6
FRANCE 0.16 0.03 2.5
CONCLUSION
INSTRUMENTS
STABLE
SUITABLE
CONCLUSION
PROCEDURES
AND
METHODS
ARE SUITABLE FOR INTERCOMPARISONS
CONCLUSION
ORGANISED BY RIC
INTERCOMPARISONS
PROMOTED BY WMO
THANKSENVIRONMENTAL AGENGY
OF THE REPUBLIC OF SLOVENIA
THANKS
THE END ?
TO BE CONTINUED…
THANKS FOR YOUR ATTENTION
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