P r a c t i c a l u s e o f s t a n d a r d me - PowerPoint PPT Presentation

P r a c t i c a l u s e o f s t a n d a r d me t e o r o l o g i c a l i n s t r u me n t s i n d o me s t i c me t e o r o l o g i c a l o b s e r v a t i o n n e t w o r k s S a t o s h i H A G I Y A M e t e o r o l o g i c a l I n s t r u me n t C e n t e r WM O / R e g i o n a l I n s t r u me n t C e n t r e ( R I C ) T s u k u b a J a p a n M e t e o r o l o g i c a l A g e n c y ( J M A ) 2 0 M a r . 2 0 1 8 We b s i t e : h t t p : / / w w w . j ma . g o . j p / j ma / j ma - e n g / j ma - c e n t e r / r i c / R I C _ H P . h t ml E ma i l : r i c - t s u k u b a @me t . k i s h o u . g o . j p

O u t l i n e o f p r e s e n t a t i o n  O b s e r v a t i o n n e t w o r k o f J M A “ A M e D A S ”  T r a c e a b i l i t y o f me t e o r o l o g i c a l i n s t r u me n t s i n J a p a n  M a i n t e n a n c e o f f i e l d i n s t r u me n t s  O v e r h a u l a n d i n s p e c t i o n / c a l i b r a t i o n o f f i e l d i n s t r u me n t s a t M e t e o r o l o g i c a l I n s t r u me n t C e n t e r ( M I C )  S i t e i n s p e c t i o n / c a l i b r a t i o n o f f i e l d i n s t r u me n t s Meteorological Instrument Center Japan Meteorological Agency

O b s e r v a t i o n n e t w o r ko f J M A “ A M e D A S ” ( A u t o ma t e d M e t e o r o l o g i c a l D a t a A c q u i s i t i o n S y s t e m) M a n n e d M e t e o r o l o g i c a l O b s e r v a t o r y 6 1 A b o u t Sapporo S p e c i a l A u t o ma t i c We a t h e r S t a t i o n 9 5 1 , 3 0 0 A u t o ma t i c We a t h e r S t a t i o n 7 7 3 S t a t i o n s A u t o ma t i c P r e c i p i t a t i o n G a u g e S t a t i o n 3 6 1 S t a t i o n s a r e l o c a t e d a t a v e r a g e i n t e r v a l s o f 1 7 k m. Sendai Fukuoka Tokyo Osaka < O b s e r v a t i o n e l e me n t > - P r e c i p i t a t i o n ( A l l s t a t i o n s ) - A i r t e mp e r a t u r e , Wi n d d i r e c t i o n / s p e e d a n d S u n s h i n e d u r a t i o n ( a b o u t 8 4 0 s t a t i o n s ) - S n o w d e p t h ( a b o u t 3 2 0 s t a t i o n s ) Chichi Jima M inamidaito Jima Naha M inamitori Shima Meteorological Instrument Center Japan Meteorological Agency

O b s e r v a t i o n n e t w o r ko f J M A “ A M e D A S ” ●M a n n e d O b s e r v a t o r y & S p e c i a l A u t o ma t i c We a t h e r S t a t i o n S u r f a c e We a t h e r O b s e r v a t i o n S y s t e m ( J M A - 1 0 t y p e ) Combined Wind Vane and Propeller Anemometer Sunshine Recorder Pyranometer Snow Depth Gauge Thermometer Barometer Hygrometer Visibility Meter (Only AWS) Precipitation Gauge Rain Sensor Data Converter & Processing Unit Meteorological Instrument Center Japan Meteorological Agency

O b s e r v a t i o n n e t w o r ko f J M A “ A M e D A S ” ●A u t o ma t i c We a t h e r S t a t i o n / A u t o ma t i c P r e c i p i t a t i o n G a u g e S t a t i o n Combined Wind Vane and Propeller Anemometer Thermometer Sunshine Recorder Precipitation Gauge A u t o ma t i c We a t h e r S t a t i o n Meteorological Instrument Center Japan Meteorological Agency

T r a c e a b i l i t y o f M e t e o r o l o g i c a l I n s t r u me n t s i n J a p a n B I P M I n t e r n a t i o n a l S t a n d a r d ( S I u n i t ) N a t i o n a l P r i ma r y S t a n d a r d N MI J ( N a t i o n a l Me t r o l o g y I n s t i t u t e o f J a p a n ) N a t i o n a l me t e o r o l o g i c a l s t a n d a r d ( J MA s t a n d a r d ) J MA Wo r k i n g s t a n d a r d s J M A i s a c c r e d i t e d t o I S O / I E C 1 7 0 2 5 ( J MA s u b - s t a n d a r d ) T e mp e r a t u r e • H u mi d i t y • Wo r k i n g i n s t r u me n t s P r e s s u r e • ( O b s e r v a t i o n s i t e s ) I n J a p a n , t h e M e t e o r o l o g i c a l S e r v i c e A c t r e q u i r e s a l l me t e o r o l o g i c a l i n s t r u me n t s u s e d f o r p u b l i c t o me e t c e r t a i n t e c h n i c a l a n d p e r f o r ma n c e s t a n d a r d s . Meteorological Instrument Center Japan Meteorological Agency

20 Mar. 2018 Traceability of Temperature (JMA) M easurement standards JM A Standard Working Standard Field Instruments traceable to national standards Accredited Meteorological Instrument Center (JMA) Observatory (JMA) Laboratory* Temperature fixed Platinum resistance Platinum resistance thermometer Platinum resistance points thermometer thermometer NSR-160 (Netsushin, Japan) ・ Indium point TS-81A (Chino, Japan) (156.5985 ° C ) Alternating current bridge ・ M ercury point Alternating current bridge F-600 (ASL, UK) (-38.8344 ° Calibration: C ) F-250 (ASL, UK) ・ at the time of installation Water triple point Water triple-point cell (0.01 ° C ) (0.01 ° C ) Standard resistor Calibration: Standard resistor (100 Ω ) Calibration: (100 Ω ) Check: every year every 5 years ・ every 3 months (manned observatory) Calibration: ・ ・ every year (automatic every year Check: every 6 months weather station) NSR-160 Using water triple-point ・ every 2 years cell Tolerable range: Water triple-point cell ± 0.4 ° C Standard resistor Platinum resistance thermometer M ercury-in-glass Platinum resistance TS-81A (Chino, Japan) thermometer thermometer (psychrometer) (psychrometer) Under Alternating current bridge transition * A c c o r d i n g t o t h e M e a s u r e me n t A c t i n J a p a n , J M A s t a n d a r d c a n n o t b e d i r e c t l y c a l i b r a t e d t o t h e N a t i o n a l s t a n d a r d . F-250 (ASL, UK)

20 Mar. 2018 Traceability of Humidity (JMA) National Primary JM A Standard Working Standard Field Instruments Standard National Metrology Meteorological Instrument Center (JMA) Observatory (JMA) Institute of Japan Electronic hygrometer Chilled-mirror dew point Chilled-mirror dew point hygrometer hygrometer Standard humidity Hygrometer (display) Hygrometer (controller) generator set DewStar S-1M -0 Hygro M 2 (Shinyei technology, Japan) (General Eastern, USA) Hygrometer (sensor) Hygrometer (sensor) DewStar S-2S-0K D2 Calibration (Shinyei technology, Japan) (General Eastern, USA) Check: : every year ・ every 3 months (manned observatory) ・ Filter change: every year (automatic Every 6 months weather station) Calibration Tolerable range ： : every year ± 4% Aspirated psychrometer Lithium chloride dew-point hygrometer Check: at the time of installation JMA Standard of M ercury-in-glass thermometer thermometer (psychrometer)

20 Mar. 2018 Traceability of Pressure (JMA) National Primary Working Standard JM A Standard Working Standard Field Instruments Standard (Traveling Standard) National Metrology Meteorological Instrument Center (JMA) Observatory (JMA) Institute of Japan Digital barometer Digital barometer Air piston gauge Digital barometer Mercury U-tube resonator barometer barometer PTB330, PTB220 PTB330, PTB220 Air piston gauge using interferometer (Vaisala, Finland) (Vaisala, Finland) AV-02 PTB220 (Vaisala, Finland) (Futaba Sokki, Japan) RPM 4 (DHI, USA) F-452 (Yokogawa, Japan) Weights (Futaba Sokki, Japan) Calibration : every year (surface observatory) : every 2 years (aviation observatory ) Calibration Calibration Calibration : every 3 years : every year : every year

20 Mar. 2018 Traceability of Precipitation (JMA) National Primary Working Standard Working Standard Field Instruments Standard National Metrology Japan Quality Assurance Meteorological Instrument Observatory (JMA) Institute of Japan Organization Center (JMA) Burette 1571ml Burette Prototype of Standard weight Rain gauge (tipping bucket type) (Yoshino-keisoku, the kilogram Japan) Calibration ： Inspection ： every 10 years every 5 years