PITSFORD HALL WEATHER STATION NORTHAMPTON UNITED KINGDOM FERBUARY 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 0900 hours UTC Total Cloud 8 7 5 5 6 8 8 8 8 7 8 7 8 5 0 8 8 0 2 6 0 9 8 9 2 6 8 2 Wind Direction nnw ssw ssw nnw nnw sw ssw ssw ssw calm ssw calm se n ene se ese ese e se se ese s e e e e s Speed (knots) 9 9 19 13 3 15 3 11 7 0 4 0 1 4 4 6 6 6 8 1 0 6 9 6 6 3 1 9 Weather 10 2 2 2 2 3 28 2 50 43 51 2 40 40 0 10 2 10 3 3 0 45 10 28 1 1 2 1 Visibility 4 8 9 9 8 6 4 7 6 3 6 5 5 4 7 5 7 5 6 6 5 2 5 2 5 5 5 7 Screen (C) Dry Bulb 2.4 4.3 2.5 0.1 -0.9 0.2 6.0 7.8 7.5 -1.5 5.0 4.2 0.6 -2.1 2.0 0.6 -0.7 -2.3 -1.1 1.0 0.9 -0.1 7.1 5.4 2.4 4.2 5.1 7.7 Wet Bulb 2.2 3.5 1.4 -0.4 -1.4 -0.2 5.9 7.2 7.4 -1.8 4.9 4.1 0.1 -2.2 -0.1 0.0 -1.8 -2.7 -1.8 -0.4 0.5 -0.1 6.7 5.3 1.8 3.6 4.5 7.1 Max 7.6 8.0 6.5 5.1 4.3 6.0 10.4 10.6 9.0 7.1 6.4 7.1 2.0 3.4 5.9 2.8 2.0 4.6 4.2 8.0 8.1 6.8 13.1 10.3 12.5 11.1 13.5 10.9 Min -3.1 1.0 1.7 -1.3 -2.6 -3.2 0.1 5.7 7.1 -2.4 -0.2 3.2 0.3 -3.3 -2.9 -0.1 -3.3 -5.2 -4.0 -1.8 -1.2 -2.1 -0.7 4.8 1.2 2.2 2.9 4.7 Ground Observations Grass Min -5.5 -3.1 -2.1 -4.0 -8.0 -6.2 -3.4 3.7 5.6 -3.6 -0.9 1.2 0.6 -5.6 -6.4 -2.1 -6.2 -7.4 -6.5 -4.7 -4.2 -4.2 -4.4 -0.3 -1.9 -1.1 -0.6 0.6 Conc. Min -3.6 -0.7 -0.5 -2.6 -5.1 -6.0 -2.6 4.9 6.5 -1.4 -0.2 3.0 0.9 -4.6 -5.0 -0.5 -4.4 -6.4 -5.7 -3.0 -3.5 -3.1 -2.5 3.2 -0.5 0.6 1.4 4.1 Bare Earth Min -3.0 -0.6 -0.5 -1.4 -4.0 -2.1 -0.6 4.4 6.3 -0.8 -1.0 2.8 0.9 -2.8 -3.4 0.0 -2.2 -3.9 _ -1.5 -1.2 -1.8 -1.1 3.1 -0.4 0.8 1.2 4.2 Soil/Earth Temperatures Surface 0.8 2.4 1.1 0.0 0.0 0.5 4.5 6.6 6.9 1.4 5.0 4.5 2.1 0.0 0.7 1.4 0.5 -0.4 -0.2 -0.5 0.5 0.6 4.1 5.5 1.8 3.7 4.6 6.6 5cm 0.4 1.2 0.8 0.8 0.0 0.4 3.1 5.4 6.3 2.2 4.4 4.1 2.8 0.8 0.5 1.1 0.6 0.3 0.0 0.0 0.0 0.5 2.1 4.7 2.2 3.2 3.9 5.8 10cm 1.1 1.6 1.4 1.4 1.0 0.9 3.0 5.4 6.3 3.1 4.8 4.5 3.6 1.6 1.2 1.7 1.2 1.1 0.7 0.6 0.6 1.0 1.9 4.8 2.9 3.6 4.3 6.1 20cm 2.2 2.4 2.5 2.4 2.0 1.8 3.0 5.0 6.0 4.6 4.9 5.0 4.8 3.0 2.4 2.6 2.2 1.9 1.6 2.9 1.5 1.7 2.1 4.5 4.1 4.4 4.8 6.3 30cm 2.9 2.6 3.0 2.7 2.5 2.2 2.7 4.3 5.2 5.1 4.9 5.2 5.2 3.8 3.0 2.6 2.6 2.2 2.0 3.0 1.8 1.6 1.8 3.6 4.0 4.2 4.7 5.7 40cm 3.0 2.7 3.2 3.0 2.7 2.5 2.8 4.1 5.0 4.9 4.8 5.1 5.1 3.9 3.1 2.9 2.7 2.4 2.1 3.0 1.8 1.7 2.0 3.3 3.8 4.1 4.5 5.6 50cm 3.9 3.4 3.9 3.6 2.9 3.0 3.4 4.1 5.1 5.4 5.8 5.3 5.4 4.6 3.9 3.5 3.3 3.0 2.6 2.0 2.0 2.4 2.5 3.4 4.3 4.4 4.7 5.5 100cm 5.4 5.0 4.0 5.0 3.5 4.6 4.6 4.5 4.5 4.6 4.9 5.0 5.1 5.1 5.0 4.8 4.5 4.3 4.2 4.0 4.0 3.8 3.7 3.7 3.8 4.0 4.2 4.4 State of the Ground Without snow _ 1 4 _ 4 4 2 1 2 1 2 1 1 4 4 1 4 4 4 4 4 4 1 1 4 1 1 1 With snow 4 _ _ 8 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth 1 _ _ 1.5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 9 1 5 9 5 5 4 1 3 5 3 3 3 5 7 4 7 7 7 5 5 7 4 2 7 1 1 1 State of the Concrete 2 1 0 2 3 0 2 1 1 1 2 1 1 0 0 0 0 0 0 3 0 0 1 1 0 0 0 0 Evaporation Hook-gauge reading _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Total evaporation (less rainfall) > > > > > > > > > > > > > > > > > > > > > > > > > > > > Rainfall Total 0.1 0.9 0.2 0.1 _ 1.1 0.1 5.7 0.1 5.6 0.3 0.8 _ _ _ _ _ _ _ _ tr(fe) tr tr(x) _ _ _ _ 2.3 Duration _ 0.5 0.5 1.3 _ 0.8 _ 4.0 _ 8.5 _ 1.3 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3.0 Acidity _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Run of Wind Miles 164.38 187.34 152.8 200.76 91.75 166.01 154.22 228.37 117.88 181.74 101.5 42.59 58.8 95.7 107.13 77.58 81.16 74.56 108.6 51.66 55.88 85.12 157.85 88.63 90.19 65.84 121.33 229.13 Mean 8.9 10.1 8.3 10.9 5 9 8.4 12.4 6.4 9.8 5.5 2.3 3.2 5.2 5.8 4.2 4.4 4 5.9 2.8 3 4.6 8.6 4.8 4.9 3.6 6.6 12.4 Gust 24 33 37 46 18 18 18 24 32 20 15 17 17 18 20 16 16 18 27 <15 <15 15 18 15 17 13 17 31 Sunshine 4.1 0.5 5.5 3.2 5.3 0.0 0.2 0.1 0.1 0.1 0.0 0.3 1.2 4.3 6.7 2.6 4.3 6.0 5.2 3.6 2.9 3.2 2.8 0.6 6.4 1.2 1.4 2.1 Statistics Saturated VP(Twb) 0.716 0.785 0.676 0.593 0.551 0.602 0.929 1.016 1.03 0.535 0.867 0.819 0.615 0.52 0.607 0.611 0.535 0.501 0.535 0.593 0.634 0.607 0.982 0.891 0.696 0.791 0.843 1.009 VP 0.703 0.731 0.602 0.559 0.517 0.575 0.922 0.975 1.023 0.515 0.86 0.812 0.581 0.513 0.466 0.571 0.461 0.474 0.488 0.499 0.607 0.607 0.955 0.884 0.656 0.75 0.802 0.968 Saturated VP 0.726 0.831 0.732 0.615 0.572 0.62 0.936 1.059 1.037 0.547 0.873 0.825 0.638 0.524 0.706 0.638 0.581 0.516 0.564 0.657 0.652 0.607 1.009 0.897 0.726 0.825 0.879 1.052 RH % 96.8 88 82.2 90.9 90.4 92.7 98.5 92.1 98.6 94.1 98.5 98.4 91.1 97.9 66 89.5 79.3 91.9 86.5 76 93.1 100 94.6 98.6 90.4 90.9 91.2 92 Dew Point 1.9 2.5 -0.2 -1.2 -2.3 -0.8 5.8 6.6 7.3 -2.3 4.8 4 -0.7 -2.4 -3.7 -0.9 -3.8 -3.4 -3 -2.8 -0.1 -0.1 6.3 5.2 1 2.8 3.8 6.5 Pressure 1012.4 1003.5 991.9 996.2 1011.1 1016.8 1017.6 1018.0 1009.5 1020.6 1022.3 1028.1 1029.2 1031.0 1038.2 1038.1 1040.0 1030.5 1016.7 1011.3 1021.0 1023.3 1021.1 1024.9 1018.1 1011.2 1010.4 1016.0 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow 1 _ 1 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ 1 _ _ _ _ _ _ _ _ _ _ _ 1 _ 1 _ _ _ _