Calcul de l'ETP PENMAN- MONTEITH à différents pas de ... - LTHE
Calcul de l'ETP PENMAN- MONTEITH à différents pas de ... - LTHE
Calcul de l'ETP PENMAN- MONTEITH à différents pas de ... - LTHE
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variables<br />
STATIONS DE BIRA ET NALOHOU<br />
Appareils<br />
marque et type<br />
Gamme <strong>de</strong> mesure<br />
Précision<br />
Vitesse (v) Vaisala WXT510<br />
0 <strong>à</strong> 35 m.s -1<br />
Max (± 3%; 0.3ms -1 )<br />
Vent<br />
Ultrasonic wind sensor 36 <strong>à</strong> 60 m.s -1 ± 5%<br />
2 m Direction (d)<br />
0 <strong>à</strong> 360° ± 2°<br />
Pression (P) Vaisala WXT510 600 hPa <strong>à</strong> 1100 hPa ± 0,5 hPa ; 0°C <strong>à</strong> 30°C<br />
(-52°C <strong>à</strong> 60°C) ± 1 hPa ;-52°C <strong>à</strong> 60°C<br />
Temperature (t) Vaisala WXT510<br />
-52°C <strong>à</strong> 60°C ± 0,3°C <strong>à</strong> 20°c<br />
± 0,4°C <strong>à</strong> 40°c<br />
Humidité relative (Hr)<br />
0 <strong>à</strong> 100% ± 3% ; 0 <strong>à</strong> 90%<br />
± 5% ; 90 <strong>à</strong> 100%<br />
Solar radiation<br />
Kipp & Zonen CNR1 0 – 1500 W m-² Equal sensitivity for the<br />
(SWin, SWout) 2 CM3 pyranometers 0.305 <strong>à</strong> 2.800 µm four sensors<br />
± 0.6 W m - ²<br />
Far Infra Red radiation Kipp & Zonen CNR1 -250 <strong>à</strong> 250 W.m -2 (expected accuracy for<br />
(LWin, LWout) 2 CG3 pyrogeometers 5 <strong>à</strong> 50µm<br />
daily sums: ± 10%)<br />
PT-100 pyrg. temperature - 40°C <strong>à</strong> 70°C ± 2 K<br />
Pluviométrie 1<br />
Vaisala WXT510<br />
Rainfall height 5%<br />
Rainfall duration 10 s (resolution)<br />
Rain drop impactor Rainfall intensity<br />
60 cm² area, 2 m high 0-200 mm h -1 0.1 mm h -1 (resolution)<br />
Hail<br />
0.1 hit cm -2<br />
Pluviométrie 2 RIMCO 7499<br />
Rainfall height 0.5 mm<br />
324 cm², 30 cm high 250-500 mm h -1 3%<br />
Rainfall intensity<br />
Tipping bucket raingauge 0-250 mm h -1 1%<br />
Vaisala WXT510 : Multiparameter weather transmitter<br />
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