PITSFORD HALL WEATHER STATION CLIMATOLOGICAL OBSERVATIONS FOR JULY 2000 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st Time of Observation 830 830 830 830 830 830 830 830 830 830 830 830 830 830 830 830 830 830 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 830 830 830 Total Cloud 8 8 8 8 8 8 8 8 8 8 6 8 8 6 5 7 3 1 0 1 0 8 7 7 6 5 5 7 7 2 7 Wind Direction se n e e ne calm ene nw sw nw ne nw nw ne ne ne ene e n ne se e e e calm calm w ne n n wsw Speed (knots - Beaufort) 5 5 5 13 5 0 19 9 9 9 13 5 5 9 19 9 5 2 5 2 3 4 4 2 0 0 1 1 2 5 9 Present Weather (coded) 2 50 10 52 52 10 20 3 3 3 4 2 2 3 21 2 2 2 2 2 2 3 2 2 1 1 2 1 3 2 2 Visibility (coded) 5 5 5 4 5 5 7 7 7 6 8 7 5 7 7 7 7 7 6 7 7 7 7 6 6 6 6 7 7 7 8 Screen (C) Dry Bulb 14.5 14.8 15 13.4 14.4 14.8 12.7 12.9 15.5 12 10.5 11.4 15.5 12.8 13.9 11.6 13 14.4 14.7 22.2 22 14.1 15.1 15.7 17.3 20.6 20.3 18.6 15.9 17 18.4 Wet Bulb 14 14.5 14.4 13.1 12.9 14.4 11.5 12 14.8 11.3 9 10.7 15.4 11.5 12.5 9.1 11.4 12.5 13.4 17.2 17.5 12.4 13.9 13.6 14.3 16.3 20.3 18.5 14.9 15.5 15.9 Max 19.1 21.7 21.6 16.1 17.6 22.1 18.1 17.2 18 13.4 16.2 18.7 17.9 15.4 16.6 18.6 22.2 24.2 22.8 24.8 25.8 23.3 15.7 16.5 18.6 21.9 23.9 23.5 24.1 24.5 24.6 Min 11.2 13.2 13.5 12.6 12 13.1 11.3 9.8 12.1 11 6.2 6.8 11.7 10.7 8.7 8.8 8.3 9.7 10.9 12.8 11 11.1 11.2 10.8 11.8 12.2 14.2 12.5 12.6 13.3 13.4 Ground Observations (C) Grass Min (at obs) 11.6 11 10.9 13 12 12.9 11.9 7.1 11.5 9.5 4.8 3 9 9 5.1 5.1 6.1 7 7.9 8.7 8.3 8.7 8.5 11.3 11 11.4 11.6 9.4 8.9 10.1 10.4 Conc. Min (at obs) 12.5 12.9 13.6 14 13 14.5 12.5 9.6 12.3 11.2 7 6 10.5 10.3 6.5 8.1 7.9 9.5 10.3 11.2 10.7 11.2 11.6 11.6 12.1 13.4 13.3 11.8 12.6 12.4 13 Surface (grass, at obs) 16.4 17.8 15.1 16.5 16.2 16.6 16 16.2 15.5 15.3 10.5 12.5 15.6 15 15.4 14.6 13.9 14.3 15.6 22 20.2 15.7 16.5 16.6 18.3 18.7 19.4 19.8 17.6 16.9 18.4 Soil Temperatures (C) 5cm 15.9 16.6 17.1 16.9 16 16.6 16.5 15.5 15.9 15.9 13.5 13.5 15.7 15.9 15 14.7 14.2 15.4 16.4 22.9 23 18.7 18.2 18 18.7 19 21 20.3 17.5 17 17.9 10cm 16.5 16.7 14.3 17.4 16.5 16.8 17 16 16 16 14.4 14.5 16 16.4 15.5 15.5 15.4 16.5 17.2 22 22.5 18.7 18 17.8 18.1 18.6 20 19.7 17.6 17.6 18.5 20cm 16.8 17.2 17.2 18.1 16.3 17.4 17.9 17 16.9 16.7 15.5 15.7 16.5 17 16.4 16.1 16.4 17.5 18.1 21.5 22 19.3 18.5 18 18.2 18.7 20 19.7 18.5 18.5 19.4 30cm 17.2 17.5 17.4 18.4 17.5 17.6 18.3 17.6 17.4 17.3 16 16 16.7 17.4 16.6 16.5 16.7 17.8 18.5 20.7 21 19.4 18.6 18 18.2 18.5 19.4 19.5 18.9 18.9 19.6 40cm 17.2 17.4 16.9 18.2 17.5 17.5 18 17.5 17.4 17.3 16.5 16.4 16.7 17.4 16.7 16.5 16.8 17.6 18.4 19.4 19.5 19 18.4 17.7 17.5 17.8 18.4 18.6 18.6 19 19.5 50cm 17.5 17.5 16.4 18.7 17.6 17.5 18 17.6 17.5 17.4 16.7 16.5 16.6 16.8 16.8 16.8 17 17.5 18.1 18.8 19 19 18.5 18 17.6 18 18.3 18.5 18.6 18.7 19.3 100cm 16.2 16.1 15.3 16.3 16.3 16.1 16.3 16.3 16.3 16.2 16 16 15.5 15.9 15.9 16 15.8 16 16.1 16.4 16.5 16.7 16.7 16.7 16.7 16.7 16.7 16.8 17 17 17.2 State of Ground Without snow 1 1 1 2 1 2 1 1 1 2 1 1 2 2 1 0 0 9 9 9 9 9 9 9 9 9 9 1 9 1 9 With snow Snow depth (at obs) State of Concrete 1 0 0 2 1 1 0 1 1 2 0 0 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 Rain (mm & hrs) Rain (obs-obs) 0.8 tr 5.9 0.4 tr 3.2 1 0.8 3.1 9.5 tr 2.9 1.1 0.2 _ _ _ _ _ _ _ _ 0.4 _ _ _ _ 1.3 2.6 _ tr Rain duration 1 _ 2.3 0.5 _ 1.5 1.5 1.3 1.8 6.8 _ 3.8 0.4 0.3 _ _ _ _ _ _ _ _ 8.8 _ _ _ _ 1.1 1.4 _ 0.2 Rainfall acidity _ _ 6.2 5.9 _ 5.7 5.74 6.33 6.43 n/a _ 6.23 6.51 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6.01 5.95 _ _ Run of wind (miles) Run over 24 hrs 31.9 31.4 70.6 70.6 31.3 85 98.9 93.1 95.2 134.1 93 120 75.6 226.1 102.3 58 40.7 56.4 65.7 65.7 135.4 114.1 110.4 22 19.4 35 46 29.3 64.4 52.6 59 Mean 24hr wind (mph) 1.7 1.7 3.8 3.8 1.7 4.6 5.4 5 5.2 7.3 5 6.5 4.1 12.2 5.5 3.1 2.2 3.1 3.6 3.6 7.3 6.2 6 1.2 1.1 1.9 2.5 1.6 3.5 2.8 3.2 Sunshine (hrs) 0 1.8 1.5 0 0 3.5 4.8 1.6 0.7 0 5 5 2.5 0.7 5.1 9.5 11.9 12.2 10.3 9.6 11.6 0.2 0 0 1.3 4.6 6.8 6.7 6.2 10.6 7.6 General Statistics Saturation Vapour Pressure at Twb 1.599 1.652 1.641 1.508 1.489 1.641 1.358 1.403 1.684 1.34 1.149 1.287 1.751 1.358 1.45 1.156 1.349 1.45 1.538 1.963 2.001 1.441 1.589 1.558 1.631 1.854 2.383 2.131 1.695 1.762 1.808 Vapour Pressure 1.565 1.631 1.6 1.488 1.387 1.614 1.276 1.342 1.636 1.292 1.047 1.239 1.744 1.269 1.354 0.986 1.24 1.32 1.449 1.62 1.692 1.325 1.507 1.415 1.426 1.559 2.383 2.124 1.627 1.659 1.637 Saturated Vapour Pressure 1.652 1.684 1.706 1.538 1.641 1.684 1.469 1.489 1.762 1.403 1.27 1.349 1.762 1.479 1.589 1.367 1.499 1.641 1.674 2.678 2.645 1.61 1.717 1.785 1.976 2.428 2.383 2.144 1.808 1.939 2.118 Relative Humidity 94.7 96.9 93.8 96.7 84.5 95.8 86.9 90.1 92.8 92.1 82.4 91.8 99 85.8 85.2 72.1 82.7 80.4 86.6 60.5 64 82.3 87.8 79.3 72.2 64.2 100 99.1 90 85.6 77.3 Dew Point (C) 13.7 14.3 14 12.9 11.8 14.1 10.6 11.3 14.3 10.8 7.6 10.1 15.3 10.5 11.5 6.8 10.1 11.1 12.5 14.2 14.9 11.1 13.1 12.1 12.2 13.6 20.3 18.4 14.3 14.6 14.4 Weather Diary (Beaufort) Before observation oid. oid. m cmid omd.d. omid. cid. crr cid. rr cir. bz bz od.d. After observation oid., ct cpr, cm ctlrr cid. crr, cRR, bcid. cid. cir.,oiR bcrr, bcir. cz,oir., ctlR,cir bcir. cir oRR iR,tlr.