PITSFORD HALL WEATHER STATION REGISTER OF CLIMATOLOGICAL OBSERVATIONS DECEMBER 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 8 8 8 8 8 8 8 8 1 8 8 8 9 9 8 8 8 0 8 8 9 8 9 6 8 8 3 _ _ 8 8 Wind Direction sse ssw calm ssw nnw nne nne e ene e ene ene ne e ne n nne e se s e wnw sse s ssw s s nw ese nne ene Speed (knots) 16 6 0 13 10 3 9 9 15 15 11 18 7 6 16 3 6 3 7 2 3 8 4 15 9 15 12 7 5 8 14 Weather 61 2 2 21 2 50 60 20 1 3 3 12 61 45 61 63 2 0 10 2 45 2 45 1 2 50 1 _ _ 2 2 Visibility 6 9 7 5 8 5 6 5 7 5 5 6 3 4 5 5 6 8 5 5 3 7 3 8 5 8 7 _ _ 5 7 Screen (C) Dry Bulb 11.2 8.3 6.9 7.5 2.8 6.9 5.1 2.3 0.8 -0.2 0.2 0.7 4.1 5.7 4.8 5.1 3.4 0.8 1.1 1.6 2.5 10.1 9.0 11.3 8.3 9.3 9.2 7.6 5.9 6.5 3.4 Wet Bulb 11.0 6.9 6.7 7.3 2.4 6.7 5.0 1.9 0.1 -1.4 -0.2 0.1 4.0 5.7 4.8 5.1 3.2 0.0 1.1 1.3 2.5 10.0 8.9 10.8 8.1 8.3 8.6 6.8 5.8 6.3 2.9 Max 11.5 9.6 9.3 9.6 8.0 6.9 5.3 2.6 4.0 2.2 1.4 3.6 5.6 6.4 5.5 5.2 4.5 4.6 4.4 4.0 10.2 10.1 11.2 13.0 10.1 11.2 10.5 9.0 11.8 6.4 7.0 Min 6.6 5.8 6.2 5.8 1.6 2.2 4.2 2.0 -0.1 -0.6 -1.5 -0.7 0.1 4.6 4.1 4.5 3.0 -0.5 0.4 0.3 1.3 2.1 7.6 8.6 7.5 7.2 8.6 6.1 4.0 5.4 3.0 Ground Observations Grass Min 6.1 2.6 2.9 2.4 -1.0 -0.5 3.7 -0.7 -2.4 -3.5 -1.1 -2.0 0.2 3.2 3.6 4.0 1.9 -4.0 -2.9 -2.2 1.4 2.4 3.1 6.7 4.6 3.4 5.8 3.2 2.5 5.1 2.1 Conc. Min 6.0 4.8 _ _ 0.0 1.0 4.2 1.4 -1.0 -1.8 -2.5 -0.2 0.4 3.6 4.1 4.3 3.0 -2.1 -1.1 -1.0 1.5 2.7 6.0 8.0 6.2 5.6 7.1 5.0 3.0 5.5 3.0 Bare Earth Min 6.6 4.3 4.0 3.6 0.0 -1.0 4.1 1.6 -0.9 -1.1 -1.7 -1.0 0.2 3.5 4.1 4.3 3.1 -1.5 -1.0 -0.5 1.6 2.6 6.0 8.0 6.4 _ 7.1 5.3 3.4 3.1 3.4 Soil/Earth Temperatures Surface 10.4 7.5 6.9 7.4 3.3 6.7 5.5 3.2 1.1 0.4 0.5 1.2 4.1 5.5 4.9 5.3 4.0 0.7 1.1 2.2 3.4 8.0 8.4 9.7 8.3 8.5 7.9 6.5 6.2 7.4 4.4 5cm 9.4 7.0 6.7 7.0 3.5 5.7 5.4 4.0 1.8 -0.2 0.8 1.2 3.2 4.8 4.6 5.0 4.1 1.3 1.2 1.9 3.3 7.0 7.1 8.9 7.8 7.9 8.0 6.5 5.8 7.6 4.8 10cm 9.3 7.4 7.2 7.4 4.5 5.8 5.8 4.7 3.1 1.8 1.6 1.8 3.3 4.8 5.0 5.3 4.6 2.2 2.0 2.3 3.7 6.6 7.1 8.7 8.0 8.1 8.4 7.0 6.2 8.1 5.7 20cm 8.6 7.9 7.7 7.7 6.1 6.2 6.4 5.7 4.6 3.4 2.9 2.8 3.6 4.8 5.4 5.6 5.4 3.9 3.3 3.2 4.1 5.6 6.7 8.0 8.1 8.0 8.5 7.0 6.2 8.1 6.6 30cm 8.3 8.3 8.0 8.1 7.1 6.5 6.6 6.2 5.5 4.3 3.7 3.7 3.9 4.8 5.3 5.6 5.6 4.6 3.8 3.5 4.2 5.0 6.3 7.4 7.6 7.6 8.0 7.0 6.3 7.6 7.1 40cm 8.2 8.3 8.0 8.1 7.4 6.7 6.7 6.3 5.6 4.5 4.1 3.7 4.0 4.8 5.4 5.6 5.6 4.8 4.1 3.8 4.3 5.0 6.1 7.0 7.6 7.5 7.8 6.5 6.3 7.5 7.0 50cm 8.4 8.8 8.5 8.6 8.2 7.5 7.4 7.0 6.5 5.7 5.1 5.0 4.7 5.3 5.6 6.0 6.1 5.6 5.0 4.6 4.9 5.2 6.2 7.0 7.6 7.7 7.9 6.5 6.3 7.6 7.5 100cm 8.8 8.9 8.8 8.9 8.7 8.6 8.4 8.2 8.0 7.8 6.4 7.0 6.9 6.7 6.6 6.8 6.8 6.8 6.6 6.4 6.2 6.2 6.3 6.6 6.8 7.1 7.2 7.3 7.2 7.4 7.4 State of the Ground Without snow 1 1 1 2 5 2 1 1 1 4 4 1 1 1 2 2 2 4 4 1 1 2 2 2 2 2 2 2 2 2 2 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 3 3 3 3 5 3 3 4 7 7 7 4 3 1 3 3 1 7 7 4 2 3 3 3 1 3 3 3 3 3 1 State of the Concrete 2 1 1 2 1 2 1 0 0 0 0 1 2 1 2 2 1 0 0 0 1 1 1 1 1 1 1 2 2 1 1 Evaporation Hook-gauge reading 54.39 _ _ _ _ _ 69.68 _ _ _ _ _ _ 74.88 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Total evaporation (less rainfall) > > > > > > > > > > > > > 0.31 > > > > > > > > > > > > > > > > > Rainfall Total 1.1 1.7 3.9 3.7 0.4 4.0 0.5 0.2 _ _ 0.1 3.9 1.3 8.6 5.7 3.2 0.1 _ _ 0.6 21.4 0.4 1.9 0.3 3.1 3.0 0.2 9.4 10.6 0.2 7.7 Duration 1.0 0.8 2.0 1.9 0.5 6.0 1.3 1.3 _ _ 0.3 5.5 0.8 10.0 10.8 8.3 _ _ _ 1.8 13.0 0.3 1.0 0.4 3.0 2.8 _ 3.2 4.5 0.3 5.0 Acidity _ 5.20 6.56 6.62 5.69 6.35 _ _ _ _ _ 6.42 _ 6.41 6.47 6.65 _ _ _ _ 6.65 _ 6.41 _ 6.43 6.44 _ _ _ _ _ Run of Wind Miles 226 134.57 62.32 38.47 207.55 185.33 141.66 165.77 217.59 194.24 193.6 103.66 86.84 190.61 120.04 82.29 86.29 93.28 61.27 47.57 104.77 125.7 184.03 224.91 130.25 270.32 141.6 134.4 148.11 151.25 90.91 Mean 12.2 7.3 3.4 2.1 11.2 10 7.7 9 11.8 10.5 10.5 5.6 4.7 10.3 6.5 4.5 4.7 5.1 3.3 2.6 5.7 6.8 10 12.2 7.1 14.6 7.7 7.3 8 8.2 4.9 Gust 30 29 16 28 21 23 26 25 41 32.5 29 19 15 33 25 17 17 17 15 <15 19 28 23 28 26 30 32 24 29 25 20 Sunshine 2.8 1.3 0.2 2.2 6.0 0.3 0.0 0.0 6.6 0.0 0.1 0.0 0.0 0.3 0.0 0.0 0.0 6.3 1.5 0.0 0.0 0.0 0.0 2.9 0.3 0.2 0.0 0.4 0.0 0.0 0.0 Statistics Saturated VP(Twb) 1.313 0.995 0.982 1.023 0.726 0.982 0.873 0.701 0.615 0.551 0.602 0.615 0.814 0.916 0.861 0.879 0.769 0.611 0.662 0.671 0.732 1.229 1.141 1.296 1.081 1.095 1.118 0.989 0.923 0.955 0.753 VP 1.299 0.9 0.968 1.009 0.699 0.968 0.866 0.674 0.568 0.47 0.575 0.575 0.807 0.916 0.861 0.879 0.755 0.557 0.662 0.651 0.732 1.222 1.134 1.262 1.067 1.027 1.077 0.935 0.916 0.941 0.719 Saturated VP 1.331 1.095 0.995 1.037 0.747 0.995 0.879 0.721 0.648 0.602 0.62 0.643 0.819 0.916 0.861 0.879 0.78 0.648 0.662 0.686 0.732 1.237 1.149 1.34 1.095 1.172 1.164 1.044 0.929 0.968 0.78 RH % 97.6 82.2 97.3 97.3 93.6 97.3 98.5 93.5 87.7 78.1 92.7 89.4 98.5 100 100 100 96.8 86 100 94.9 100 98.8 98.7 94.2 97.4 87.6 92.5 89.6 98.6 97.2 92.2 Dew Point 10.8 5.4 6.5 7.1 1.9 6.5 4.9 1.4 -1 -3.6 -0.8 -0.8 3.9 5.7 4.8 5.1 2.9 -1.3 1.1 0.9 2.5 9.9 8.8 10.4 7.9 7.4 8.1 6 5.7 6.1 2.3 Pressure 998.1 993.2 1006.0 1008.8 1023.7 1032.5 1027.7 1025.6 1026.2 1022.7 1021.1 1017.4 1020.3 1017.9 1005.6 1013.6 1025.5 1032.7 1028.7 1017.3 1017.3 1001.2 1006.8 1000.2 1008.6 991.5 985.7 998.0 998.8 997.9 1013.9 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ 1 1 _ _ _ _ _ _ 1 _ 1 _ _ _ _ _ _ _ _