PITSFORD HALL WEATHER STATION CLIMATOLOGICAL OBSERVATIONS MAY 2003 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 8 8 3 6 6 6 7 8 3 3 3 5 7 6 3 8 8 5 6 7 6 8 5 7 5 0 6 8 5 6 0 Wind Direction sw sse sw ssw ssw nnw ssw nnw calm ssw ssw ssw nnw nw nnw sse s ssw ssw w wsw wsw ssw ssw nw ssw ssw calm ene ene sse Speed (knots) 9 5 10 8 9 5 3 12 0 4 7 8 4 15 5 4 6 12 8 12 6 8 9 3 7 3 4 0 1 4 3 Weather 63 2 2 2 3 2 2 3 1 2 2 2 2 20 1 3 25 2 3 3 1 50 1 3 3 0 2 10 5 2 5 Visibility 6 6 8 8 8 8 8 6 8 7 8 8 7 7 7 6 7 8 8 7 8 7 8 8 7 8 7 5 7 7 6 Screen (C) Dry Bulb 11.8 11.5 12.6 13.4 13.5 12.7 14.1 12.7 13.6 12.9 12.5 12.6 10.6 11.5 12.6 9.9 12.5 13.5 13.9 10.4 15.0 15.4 13.8 14.2 12.8 15.1 15.4 16.7 20.4 19.5 23.2 Wet Bulb 9.9 11.1 9.1 10.8 10.1 9.7 11.6 10.0 9.0 10.0 9.7 9.7 7.7 9.3 7.1 9.5 12.1 11.5 11.8 8.4 12.0 14.2 11.6 11.4 11.1 11.0 13.1 15.1 15.0 14.3 18.0 Max 16.2 14.5 14.5 22.1 16.5 16.5 19.4 16.0 17.4 14.1 15.5 14.7 13.9 15.2 16.7 13.1 15.6 17.0 17.5 14.8 16.5 16.3 18.0 15.9 17.1 18.9 17.6 20.4 24.1 23.5 27.5 Min 6.6 7.5 6.3 9.0 9.5 3.6 4.3 9.1 6.7 4.6 4.1 6.1 3.1 5.3 1.1 5.3 9.6 9.4 8.2 6.4 9.0 12.0 11.5 8.3 6.3 6.5 11.5 13.6 10.4 10.6 12.0 Ground Observations Grass Min 4.1 5.5 4.3 6.1 6.6 -0.1 3.6 7.7 4.1 3.3 1.5 3.6 0.1 0.7 -1.2 7.2 8.6 6.9 5.7 4.1 6.1 11.1 9.6 6.4 3.6 3.9 7.7 12.6 7.3 7.6 9.5 Conc. Min 5.1 _ 5.0 7.7 8.5 3.0 4.4 8.4 5.9 4.4 4.0 5.4 2.6 4.0 1.2 8.4 9.6 8.1 7.1 5.5 8.0 12.1 10.9 8.2 6.0 6.1 11.6 14.0 9.6 10.3 11.6 Bare Earth Min 5.1 7.4 5.2 7.5 8.5 3.5 4.1 8.1 5.5 4.4 3.6 5.5 3.0 2.5 -2.0 7.6 9.4 8.2 7.4 5.6 8.1 12.0 10.7 8.2 6.8 6.7 11.0 13.6 10.1 10.6 11.6 Soil/Earth Temperatures Surface 7.9 11.8 15.8 12.6 16.4 18.5 16.7 15.1 19.2 16.2 15.1 16.2 12.6 13.4 17.8 11.0 12.8 13.9 15.0 9.6 16.6 16.1 14.5 17.3 14.7 18.4 18.1 17.0 19.7 20.0 24.3 5cm 10.4 10.6 10.2 10.4 12.2 11.9 12.4 13.0 12.8 12.6 11.0 11.5 10.6 10.9 11.0 10.1 12.1 11.8 11.6 9.3 12.9 13.9 12.5 13.0 12.4 13.1 14.7 15.6 16.1 16.8 18.6 10cm 10.5 10.6 10.4 10.4 12.4 11.9 12.3 13.0 12.9 12.7 11.3 11.7 10.8 10.7 11.0 10.6 12.2 11.7 11.6 10.0 12.7 13.8 12.8 13.0 12.4 13.1 14.6 15.6 15.8 16.7 18.4 20cm 10.4 11.2 10.5 10.6 12.4 11.7 12.1 12.9 12.5 12.6 11.8 11.7 11.0 10.5 11.1 11.7 11.9 11.5 11.6 11.4 11.9 13.0 12.9 13.2 12.5 12.6 13.7 14.6 14.9 16.0 17.1 30cm 11.2 11.6 11.0 11.0 12.4 12.2 12.0 12.8 12.8 12.7 12.4 12.1 11.9 11.1 11.6 11.9 12.0 12.0 12.2 12.2 12.1 13.0 13.1 13.1 12.6 13.1 13.7 14.5 15.0 15.7 16.6 40cm 10.9 11.4 10.9 11.0 12.0 12.0 12.0 12.5 12.6 12.6 12.2 12.0 11.8 11.1 11.5 11.9 11.6 11.8 12.1 12.1 12.0 12.7 13.0 13.0 12.8 13.0 13.5 14.2 14.6 15.5 16.2 50cm 11.1 11.5 11.3 11.2 12.1 12.5 12.2 12.6 12.9 12.9 12.5 12.5 12.2 11.6 12.0 12.0 12.0 12.2 12.5 12.4 12.5 12.9 13.0 13.2 13.2 13.3 13.6 14.1 14.6 15.4 16.0 100cm 9.9 10.0 10.2 10.2 10.3 10.3 10.6 10.7 10.9 11.0 11.2 11.2 10.9 11.0 10.9 11.0 11.0 11.1 11.2 11.2 11.3 11.3 11.4 11.6 11.7 11.8 11.9 12.1 12.3 12.6 13.0 State of the Ground Without snow 1 2 1 1 9 9 9 9 9 9 0 9 9 1 9 1 1 1 1 1 0 1 1 0 1 0 0 0 0 0 0 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 3 3 1 0 0 0 0 0 0 0 0 1 1 1 0 3 3 0 1 3 0 3 0 0 1 1 0 1 0 0 0 State of the Concrete 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 1 0 1 0 0 0 0 0 0 0 0 0 Evaporation Hook-gauge reading _ 70.21 _ _ 64.22 _ _ _ _ 48.44 _ _ _ _ _ _ 50.56 _ _ _ _ _ _ 58.11 _ _ _ _ _ _ 47.07 Total evaporation (less rainfall) > > > > 8.09 > > > > 15.88 > > > > > > 11.88 > > > > > > 11.87 > > > > > > 15.44 Rainfall Total 9.1 2.1 _ _ _ _ _ _ 0.1 0.1 0.2 1.3 3.9 _ 3.9 4.6 1.2 2.9 3.0 0.1 3.5 0.7 0.1 3.8 0.6 _ _ _ _ _ _ Duration 7.0 2.3 _ _ _ _ _ _ 0.1 0.1 0.1 0.1 0.8 _ 4.8 5.5 0.3 1.5 1.8 0.3 4.5 1.3 0.1 1.8 0.3 _ _ _ _ _ _ Acidity _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Run of Wind Miles 153.11 183.74 213.55 242.72 118.66 116.02 120.78 119.7 34.19 133.93 162.08 98.64 150.43 106.77 74.4 138 190.7 213.77 161.17 165.57 119.13 162.01 151.42 73.43 83.62 92.44 62 27.5 45.58 53.26 91.55 Mean 8.3 10 11.6 13.1 6.4 6.3 6.5 6.5 1.9 7.3 8.8 5.3 8.1 5.8 4 7.5 10.3 11.6 8.7 9 6.5 8.8 8.2 4 4.5 5 3.4 1.5 2.5 2.9 5 Gust 26 37 27 26 23 19 15 17 20 19 20 22 28 30 <15 17 22 26 31 36 21 23 29 16 22 15 <15 <15 <15 <15 16 Sunshine 8.8 2.4 4.3 11.3 12.2 9.6 8.5 1.3 8.5 3.9 6.9 4.6 4.5 11.3 10.5 0.0 1.7 4.0 9.8 2.4 0.8 0.0 5.1 4.6 4.5 11.0 2.6 2.0 10.6 12.5 12.4 Statistics Saturated VP(Twb) 1.22 1.322 1.156 1.296 1.237 1.204 1.367 1.229 1.149 1.229 1.204 1.204 1.052 1.172 1.009 1.188 1.413 1.358 1.385 1.103 1.403 1.62 1.367 1.349 1.322 1.313 1.508 1.717 1.706 1.631 2.065 VP 1.091 1.295 0.918 1.119 1.006 1 1.197 1.045 0.836 1.032 1.014 1.007 0.855 1.022 0.636 1.161 1.386 1.222 1.242 0.967 1.198 1.538 1.217 1.158 1.206 1.034 1.351 1.607 1.336 1.275 1.708 Saturated VP 1.385 1.358 1.46 1.538 1.548 1.469 1.61 1.469 1.558 1.489 1.45 1.46 1.279 1.358 1.46 1.22 1.45 1.548 1.589 1.262 1.706 1.751 1.579 1.62 1.479 1.717 1.751 1.902 2.398 2.268 2.845 RH % 78.8 95.4 62.9 72.8 65 68.1 74.3 71.1 53.7 69.3 69.9 69 66.8 75.3 43.6 95.2 95.6 78.9 78.2 76.6 70.2 87.8 77.1 71.5 81.5 60.2 77.2 84.5 55.7 56.2 60 Dew Point 8.2 10.8 5.7 8.6 7.1 7 9.6 7.6 4.4 7.4 7.2 7.1 4.7 7.3 0.6 9.2 11.8 9.9 10.2 6.5 9.6 13.4 9.9 9.1 9.7 7.5 11.4 14.1 11.3 10.6 15 Pressure 1008.4 1000.7 1014.9 1010.7 1006.7 1012.0 1024.4 1017.7 1016.8 1018.3 1017.2 1011.8 1013.8 1019.3 1023.2 1011.5 1003.0 1004.3 1005.2 1009.1 1020.4 1018.4 1007.8 1003.7 1011.5 1022.0 1023.9 1023.9 1018.8 1015.9 1011.9 Days with thunder _ _ _ _ _ _ _ _ _ _ _ 1 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ 1 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _