PITSFORD HALL WEATHER STATION CLIMATOLOGICAL OBSERVATIONS MAY 2002 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 31st 0900 hours UTC Total Cloud 5 4 6 8 4 8 8 8 8 8 7 1 8 6 7 1 1 8 6 8 6 8 6 5 5 7 4 8 6 8 3 Wind Direction nw nnw n nne n nne nne ne nne nnw n calm s w sw w e s ssw ssw ssw s s s sw s s s sw ssw wnw Speed (knots) 13 5 4 9 10 14 12 14 10 4 15 0 12 15 13 0 7 6 7 12 12 14 8 15 14 7 4 12 13 10 8 Weather 2 1 2 2 2 50 20 3 10 10 2 2 50 20 2 0 0 10 3 3 1 2 80 1 2 25 2 25 20 50 3 Visibility 7 7 7 7 8 5 4 5 5 5 7 7 7 7 7 7 7 6 8 7 7 7 8 7 7 7 8 7 8 7 8 Screen (C) Dry Bulb 11.5 11.5 10.8 8.7 9.4 9.5 9.0 10.3 9.0 11.1 14.0 11.9 12.0 13.0 16.6 18.5 17.4 14.0 14.6 15.1 16.4 14.7 12.6 14.9 14.2 12.0 13.0 13.2 13.0 12.6 15.2 Wet Bulb 9.0 9.3 9.2 7.0 7.1 9.4 8.9 8.9 8.5 10.2 11.4 9.8 11.5 12.8 15.1 17.2 16.8 13.5 12.0 12.4 13.1 11.9 11.5 11.8 10.2 10.6 9.7 11.4 10.2 11.1 12.0 Max 14.6 15.1 13.3 12.4 13.1 14.6 14.6 14.6 11.9 17.0 18.0 18.0 13.9 16.4 18.9 23.7 21.8 16.1 21.0 17.9 18.1 17.5 18.0 17.3 14.9 14.0 18.0 14.2 16.5 17.4 19.4 Min 5.1 3.4 2.8 3.2 2.3 5.9 7.4 6.1 7.8 8.8 9.1 4.0 9.1 9.5 8.9 7.3 10.8 10.3 11.1 12.0 12.3 11.6 10.6 9.3 7.3 8.1 4.6 7.2 8.5 8.6 7.1 Ground Observations Grass Min 3.6 0.1 0.9 1.0 0.1 6.1 6.3 4.1 7.5 9.5 8.7 1.5 8.1 6.8 6.9 4.4 9.4 10.8 9.0 10.3 11.2 10.9 9.4 10.4 5.6 8.2 3.6 5.8 7.1 7.1 5.1 Conc. Min 3.3 1.9 2.1 2.4 1.9 6.2 7.3 4.7 7.6 9.3 9.0 4.1 9.0 7.2 2.5 4.7 10.6 10.6 10.1 11.6 11.4 10.6 9.1 9.5 6.2 8.1 4.4 7.1 7.0 8.1 6.0 Bare Earth Min 4.3 2.5 3.9 3.4 3.0 6.1 7.6 5.6 8.4 9.7 9.1 4.6 9.2 8.5 8.2 7.2 10.8 10.9 10.7 11.7 12.0 11.1 9.7 9.6 6.6 8.8 5.6 7.7 8.1 8.6 6.9 Soil/Earth Temperatures Surface 13.6 12.3 12.2 10.6 11.1 10.0 10.7 11.4 10.0 11.2 16.1 16.1 12.7 12.4 18.1 21.6 17.4 14.5 18.1 17.5 20.0 15.9 16.5 17.0 15.6 15.9 15.6 15.2 14.5 13.4 17.2 5cm 9.5 10.2 10.1 9.3 8.4 9.3 9.4 10.0 10.2 11.4 13.2 11.3 12.4 12.1 13.2 14.2 15.0 14.4 14.2 15.0 15.6 14.9 14.3 13.6 13.0 12.5 12.7 13.2 12.5 12.4 13.1 10cm 9.4 9.8 9.9 9.5 8.7 9.6 10.5 10.3 10.8 11.6 12.8 11.5 12.5 12.2 12.4 13.8 15.0 14.7 14.2 15.0 15.3 14.8 14.2 13.5 12.9 12.5 12.4 13.4 12.8 12.7 15.0 20cm 10.2 10.0 10.5 10.2 9.7 10.1 10.6 10.5 10.9 11.3 12.2 12.1 12.6 12.4 12.5 12.5 14.5 14.5 14.3 14.3 14.6 14.5 13.7 13.1 12.8 12.9 12.5 13.5 12.9 12.9 15.0 30cm 11.3 10.5 10.6 10.5 10.4 10.5 10.7 10.9 11.3 10.8 12.4 12.6 12.6 12.3 12.0 12.7 14.5 14.5 14.1 14.5 14.7 14.7 14.4 14.4 13.8 13.6 13.4 14.1 13.6 13.6 13.5 40cm 10.6 10.1 10.3 10.5 10.3 10.2 10.6 10.7 11.1 11.2 12.0 12.2 12.5 12.2 12.1 12.5 14.0 14.2 13.8 14.2 14.4 14.5 14.2 14.1 13.6 13.5 13.3 13.8 13.5 13.4 13.2 50cm 10.8 11.3 10.5 10.9 10.6 10.5 11.0 10.9 11.6 11.5 11.9 12.4 12.6 12.1 12.2 12.4 13.5 14.1 14.0 14.3 14.5 14.6 14.5 14.5 14.2 14.0 13.7 14.1 13.9 13.8 14.0 100cm 10.4 10.2 10.2 10.0 10.0 10.0 10.0 10.0 10.2 10.4 10.4 10.5 10.8 10.7 10.8 11.2 11.5 11.7 12.0 12.2 12.3 12.2 12.5 12.6 12.8 12.7 12.7 12.7 12.8 12.8 12.9 State of the Ground Without snow 1 1 1 1 1 1 1 1 1 1 0 0 1 1 0 0 9 1 0 0 0 1 1 1 0 1 1 1 1 1 0 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 3 3 3 1 1 3 3 1 1 1 1 1 3 3 3 1 1 3 1 0 0 3 3 3 0 3 1 3 3 3 0 State of the Concrete 0 0 0 0 0 1 1 1 1 1 0 0 1 1 0 0 0 1 0 0 0 0 1 0 0 1 0 1 0 0 0 Evaporation Hook-gauge reading 62.32 _ _ _ 63.64 _ _ _ _ _ 54.58 _ _ _ _ _ 49.72 _ _ _ _ _ _ _ 58.08 _ _ _ _ _ 50.08 Total evaporation (less rainfall) > > > > 6.58 > > > > > 10.46 > > > > > 14.36 > > > > > > > 18.53 > > > > > 17.90 Rainfall Total tr 2.6 4.9 tr 0.4 0.9 0.1 tr tr _ _ 1.2 6.6 1.7 _ _ 5.0 0.6 _ 1.5 15.5 0.2 4.1 _ 5.6 3.0 0.1 1.1 0.1 tr _ Duration 0.0 0.2 2.0 _ 1.5 1.0 0.5 0.5 _ _ _ 4.8 5.0 2.3 _ _ 4.0 1.0 _ 1.8 6.8 0.5 3.8 _ 4.0 2.0 _ 2.3 0.3 0.1 _ Acidity _ 6.29 6.29 _ _ _ _ _ _ _ _ 6.30 6.67 6.45 _ _ 6.19 _ _ 6.34 6.32 _ 6.70 _ 6.53 6.45 _ _ _ _ _ Run of Wind Miles 233.22 91.17 71.38 68.35 164.46 118.34 90.47 111.8 98.86 130.89 100.36 99.31 176.42 183.55 140.51 94.6 122.86 133.35 202.5 143.52 155.52 267.66 207.71 255.23 164.22 98.81 106.89 183.19 159.01 140 46.2 Mean 12.6 4.9 3.9 3.7 8.9 6.4 4.9 6.1 5.4 7.1 5.4 5.4 9.6 9.9 7.6 5.1 6.7 7.2 11 7.8 8.4 14.5 11.3 13.8 8.9 5.4 5.8 9.9 8.6 7.6 2.5 Gust 23 21 20 20 30 21 17 20 17 23 20 20 26 29 20 19 27 20 24 23 25 32 28 35 29 16 18 23 30 29 16 Sunshine 11.5 4.2 5.3 4.2 7.0 2.0 2.0 5.6 0.0 0.4 10.2 6.5 0.0 9.0 8.5 10.5 3.5 2.4 7.0 2.4 5.6 10.5 10.4 10.1 7.4 6.2 11.7 2.3 8.8 5.5 10.4 Statistics Saturated VP(Twb) 1.149 1.172 1.164 1.002 1.009 1.18 1.141 1.141 1.11 1.245 1.349 1.212 1.358 1.479 1.717 1.963 1.914 1.548 1.403 1.441 1.508 1.394 1.358 1.385 1.245 1.279 1.204 1.349 1.245 1.322 1.403 VP 0.979 1.022 1.055 0.887 0.853 1.173 1.134 1.046 1.076 1.184 1.172 1.069 1.324 1.465 1.614 1.874 1.873 1.514 1.226 1.257 1.283 1.203 1.283 1.174 0.973 1.184 0.98 1.226 1.054 1.22 1.185 Saturated VP 1.358 1.358 1.296 1.126 1.18 1.188 1.149 1.253 1.149 1.322 1.599 1.394 1.403 1.499 1.89 2.131 1.988 1.599 1.663 1.717 1.866 1.674 1.46 1.695 1.62 1.403 1.499 1.518 1.499 1.46 1.728 RH % 72.1 75.3 81.4 78.8 72.3 98.7 98.7 83.5 93.6 89.6 73.3 76.7 94.4 97.7 85.4 87.9 94.2 94.7 73.7 73.2 68.8 71.9 87.9 69.3 60.1 84.4 65.4 80.8 70.3 83.6 68.6 Dew Point 6.7 7.3 7.7 5.2 4.7 9.3 8.8 7.6 8 9.5 9.3 7.9 11.1 12.7 14.1 16.5 16.5 13.2 10 10.3 10.6 9.7 10.6 9.3 6.6 9.5 6.7 10 7.7 9.9 9.5 Pressure 1000.7 1007.8 1017.0 1022.2 1024.6 1023.6 1024.0 1021.0 1014.0 1008.0 1011.1 1013.8 1007.7 1006.5 1020.3 1018.4 1012.7 1009.6 1015.8 1010.5 1000.3 992.6 1002.3 996.9 1005.8 998.4 1002.1 1002.3 1009.0 1019.0 1024.9 Days with thunder _ 1 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _