REGISTER OF CLIMATOLOGICAL OBSERVATIONS SEPTEMBER 2001 PITSFORD HALL WEATHER STATION Observations at Pitsford Hall at 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 0900 hours local time Total Cloud 4 8 4 3 7 5 8 6 0 8 8 8 7 1 4 0 4 7 7 7 5 8 8 8 9 9 8 5 8 8 Wind Direction nnw nw nw nnw wnw nnw w n nnw n nw se s nnw nnw nnw n n nnw nnw nne calm nne n calm calm sse se se s Speed (knots) 4 3 3 14 1 15 9 17 23 9 8 0 7 2 16 16 15 17 13 6 5 0 9 10 0 0 2 2 7 9 Weather 2 2 3 3 2 2 2 2 0 2 2 2 2 2 2 0 1 16 2 2 11 50 10 3 2 42 3 1 61 20 Visibility 7 7 7 8 7 7 7 8 8 7 6 6 7 7 7 7 6 5 4 5 6 4 5 5 3 3 4 5 4 7 Screen (C) Dry Bulb 15.6 18.1 15.5 13.7 9.4 10.9 12.9 13.8 10.1 10.5 14.0 14.1 11.4 9.4 12.7 9.1 8.4 11.5 12.3 11.2 10.4 7.9 10.8 11.9 10.9 7.1 14.1 12.2 15.1 14.5 Wet Bulb 13.0 16.6 13.5 10.9 8.8 10.0 11.6 12.1 8.2 9.1 12.9 12.9 10.4 8.6 10.8 8.3 7.8 11.3 12.0 11.0 10.2 7.8 10.4 11.5 10.6 6.5 13.9 12.1 15.0 14.0 Max 20.1 19.8 19.6 17.3 18.0 19.1 18.5 18.1 16.0 16.6 18.3 18.4 16.2 18.4 17.1 17.0 13.0 13.5 12.9 17.1 14.3 15.0 14.1 15.1 14.9 15.6 18.5 22.7 18.4 16.6 Min 9.4 14.9 12.1 9.4 7.5 9.2 10.5 11.7 7.0 6.1 9.4 10.4 9.2 7.1 9.0 6.5 6.1 8.6 10.8 9.7 8.6 5.6 5.9 10.6 9.6 5.8 6.4 9.3 12.0 11.6 Ground Observations Grass Min 7.0 13.5 11.2 7.8 5.4 8.5 8.7 9.6 2.1 1.4 5.0 1.5 5.4 3.5 5.8 1.9 2.3 6.6 10.6 5.2 3.8 2.0 1.5 8.1 5.6 3.5 6.0 6.4 9.7 7.4 Conc. Min 10.5 15.2 12.5 9.9 9.0 10.4 11.9 11.4 5.6 4.3 9.4 9.8 7.6 6.3 8.1 4.9 3.4 7.2 11.4 9.2 8.0 5.1 4.9 9.1 7.5 5.8 5.2 8.0 9.9 9.7 Bare Earth Min 10.2 14.8 12.5 9.8 8.3 9.7 10.4 _ 4.9 5.1 8.5 9.1 8.1 6.9 8.3 5.8 6.1 8.5 11.1 9.3 8.2 6.1 6.4 10.3 9.0 6.8 6.3 9.1 10.3 10.7 Soil/Earth Temperatures Surface 11.7 16.5 13.3 10.5 10.1 11.2 12.1 12.3 14.0 8.7 14.5 14.8 11.4 13.6 13.9 10.7 10.1 11.3 12.6 12.1 11.9 9.4 12.4 10.3 9.0 6.8 6.3 9.1 15.3 14.6 5cm 12.8 15.6 14.3 12.3 10.9 13.0 12.5 13.6 10.2 9.7 12.4 13.0 11.0 10.4 10.7 9.2 9.1 10.7 11.4 11.0 10.8 9.4 11.0 10.7 11.9 9.5 11.1 10.2 14.6 13.4 10cm 13.3 15.6 14.6 12.8 11.4 13.1 12.8 13.7 10.7 10.3 12.5 13.1 11.7 11.0 11.2 9.8 9.7 11.0 11.6 11.5 11.3 10.0 11.8 11.3 12.1 10.1 11.5 10.4 15.0 14.0 20cm 15.3 16.2 16.1 15.0 13.6 15.0 14.3 15.0 13.1 12.7 13.4 14.1 13.6 12.9 12.6 12.0 11.6 12.0 12.5 12.5 12.5 11.9 11.8 11.5 12.5 10.3 11.7 10.8 14.8 14.4 30cm 16.1 16.5 16.6 15.7 14.6 15.4 14.8 15.3 17.0 15.0 16.0 16.3 14.9 14.6 15.8 15.4 14.8 14.5 14.5 14.4 14.5 14.5 14.1 13.6 12.7 10.6 12.0 12.0 15.3 15.3 40cm 16.4 16.7 16.8 16.0 15.0 15.6 15.0 15.4 16.9 15.5 15.5 15.6 13.3 14.8 15.7 15.3 14.9 14.2 14.2 14.3 14.3 14.4 14.1 13.8 12.9 10.9 12.2 12.3 15.1 15.1 50cm 17.3 17.2 17.4 16.9 16.1 16.3 16.0 16.0 17.4 16.1 15.5 16.4 15.7 15.1 16.1 15.9 15.2 15.0 14.6 14.6 14.8 14.9 14.6 13.1 13.1 11.5 12.5 12.4 15.3 15.4 100cm 17.4 17.3 17.4 17.3 16.9 16.7 16.5 16.4 15.7 15.5 14.9 14.6 14.2 14.8 14.9 14.6 14.6 14.6 14.4 14.2 14.2 13.8 13.7 13.7 13.6 13.2 13.0 13.1 13.4 13.5 State of the Ground Without snow 9 9 9 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 1 1 1 1 1 1 1 1 1 1 1 1 3 3 1 3 1 3 3 1 1 1 1 1 1 1 1 1 3 3 State of the Concrete 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 1 1 1 1 1 0 0 1 1 1 1 1 2 2 Evaporation Hook-gauge reading 59.63 57.21 57.56 58.55 55.71 59.59 58.05 57.19 54.58 53.11 52 51.6 55.52 58.18 69.58 70.05 72 73.52 76.8 79.2 80.22 79.33 77.65 76.31 79.28 _ _ _ 88.98 74.56 Total evaporation (less rainfall) 2.15 2.42 1.25 2.71 2.84 0.72 1.64 1.16 2.61 1.47 1.11 0.40 1.88 0.64 2.00 0.63 0.65 0.18 0.62 0.10 _ 0.89 1.68 2.84 2.43 0.44 _ _ 2.83 4.96 Rainfall Total _ 1.6 3.7 _ 4.6 0.1 0.3 _ _ tr _ 5.8 3.3 0.1 1.1 2.6 1.7 3.9 2.5 tr _ _ 1.5 5.4 0.1 0.6 0.1 8.0 6.0 5.4 Duration _ 0.5 1.0 _ 2.8 1.3 0.8 _ _ 0.1 _ 5.0 2.1 _ 0.5 1.5 1.3 3.5 2.0 0.0 _ _ 2.8 2.3 _ 1.3 _ 6.3 1.0 3.5 Acidity _ 6.41 6.21 _ 5.90 _ _ _ _ _ _ 6.71 6.65 _ _ 6.62 _ _ 6.64 _ _ _ 5.10 6.15 _ 5.36 _ 6.53 6.33 6.63 Run of Wind Miles 79.12 86.03 141.37 117.99 107.03 146.04 169.24 204.44 164.13 128.79 101.25 199.97 48.13 128.53 153.7 156.72 248.97 243.93 200.1 82.2 26.81 57 113.85 49.67 11.59 23.11 60.49 56.04 41.69 106.84 Mean 4.3 4.7 7.7 6.4 5.8 7.9 9.2 11.1 8.9 7 5.5 10.8 2.6 7 8.3 8.5 13.5 13.2 10.8 4.5 1.5 3.1 6.2 2.7 0.6 1.3 3.3 3 2.3 5.8 Gust 16 32 28 28 25 24 30 37 30 23 23 21 29 24 32 27 39 39 36 23 <15 18 26 16 <15 <15 17 19 <15 25 Sunshine 8.3 0.3 4.1 10.3 0.0 9.0 0.7 9.9 7.3 8.0 1.4 1.7 3.4 8.5 5.7 8.5 1.5 0.0 0.0 4.5 0.7 1.8 0.3 3.5 1.0 1.5 1.2 7.7 3.0 0.0 Statistics Saturated VP(Twb) 1.499 1.89 1.548 1.305 1.133 1.229 1.367 1.413 1.088 1.156 1.489 1.489 1.262 1.118 1.296 1.095 1.059 1.34 1.403 1.313 1.245 1.059 1.262 1.358 1.279 0.968 1.589 1.413 1.706 1.599 VP 1.321 1.787 1.411 1.114 1.092 1.168 1.278 1.297 0.959 1.061 1.414 1.407 1.194 1.064 1.167 1.041 1.018 1.326 1.383 1.299 1.231 1.052 1.235 1.331 1.259 0.927 1.575 1.406 1.699 1.565 Saturated VP 1.773 2.078 1.762 1.569 1.18 1.305 1.489 1.579 1.237 1.27 1.599 1.61 1.349 1.18 1.469 1.156 1.103 1.358 1.431 1.331 1.262 1.066 1.296 1.394 1.305 1.009 1.61 1.422 1.717 1.652 RH % 74.5 86 80.1 71 92.5 89.5 85.8 82.1 77.5 83.5 88.4 87.4 88.5 90.2 79.4 90.1 92.3 97.6 96.6 97.6 97.5 98.7 95.3 95.5 96.5 91.9 97.8 98.9 99 94.7 Dew Point 11.1 15.7 12.1 8.5 8.3 9.2 10.6 10.8 6.4 7.8 12.1 12 9.6 7.9 9.2 7.6 7.2 11.1 11.8 10.8 10 7.7 10.1 11.2 10.4 5.9 13.8 12 14.9 13.7 Pressure 1018.5 1013.7 1012.5 1015.7 1020.9 1016.9 1017.5 1014.0 1017.9 1018.7 1017.7 1015.7 1005.5 1011.7 1012.2 1017.9 1021.7 1017.7 1008.5 1014.7 1018.7 1018.5 1016.8 1013.8 1015.8 1015.7 1012.3 1011.9 1006.6 1006.6 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<0.5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=0.5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1 _ _ 1 _ _ 1 1 1 1 1 _