PITSFORD HALL WEATHER STATION NORTHAMPTON UNITED KINGDOM CLIMATOLOGICAL REGISTER FOR MARCH 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 2 4 6 9 0 7 8 8 7 7 8 8 8 6 9 1 8 0 2 9 9 0 0 6 1 0 9 9 1 0 Wind Direction s nnw calm s nnw nw ssw ssw ssw ssw ssw nnw ne se se ne nne ese nnw w e ene ene ssw nw ene ene ne n nw se Speed (knots) 12 8 0 14 2 8 14 22 15 24 23 13 16 5 8 2 1 1 1 2 3 3 4 12 3 3 4 2 2 3 2 Weather 10 2 2 2 21 0 3 2 2 2 3 3 2 3 2 2 5 2 0 40 43 43 5 2 1 5 0 28 10 0 0 Visibility 5 8 7 6 5 9 7 7 7 7 7 6 7 4 4 1 6 5 5 5 3 3 5 5 5 5 6 2 4 8 8 Screen (C) Dry Bulb 6.7 5.1 2.2 8.1 9.2 5.0 5.8 6.5 8.9 9.4 9.0 6.0 4.0 2.8 3.2 1.3 8.0 3.5 2.0 5.4 5.0 2.3 6.2 10.1 7.7 8.5 8.7 4.5 9.2 8.8 5.4 Wet Bulb 6.5 5.0 2.1 8.0 9.1 4.9 5.3 5.7 7.7 8.4 8.2 5.6 3.4 2.6 3.0 1.2 5.9 2.9 -0.1 4.2 4.9 2.2 4.5 8.9 7.2 7.6 6.6 4.3 8.4 6.5 4.3 Max 11.4 10.2 9.5 13.4 9.2 11.9 8.6 10.0 13.6 12.9 11.5 8.4 6.5 11.5 10.5 12.0 13.2 9.9 14.4 12.3 10.0 13.2 18.3 15.4 15.2 14.9 15.5 11.2 14.0 15.0 14.5 Min 2.7 3.4 0.0 2.1 7.6 2.4 3.0 3.5 6.2 6.7 6.6 3.7 2.4 0.4 0.0 -1.0 -1.9 2.1 -3.2 1.3 2.8 -1.2 -0.4 5.9 3.2 3.1 2.8 1.1 4.2 3.6 2.8 Ground Observations Grass Min -0.6 0.6 -4.0 -0.5 6.2 -0.8 0.4 0.2 4.3 3.5 3.4 -0.3 -0.4 -3.2 -3.8 -2.2 -2.8 -0.4 -5.4 -3.6 -1.5 -4.2 -3.7 -0.5 -2.6 -0.5 -2.5 0.5 2.4 -0.4 -1.9 Conc. Min 1.2 2.7 -1.2 1.5 7.2 1.3 2.0 2.0 5.6 5.3 5.6 2.5 0.9 -0.9 -1.4 -1.8 -2.7 2.4 -3.6 -0.6 0.2 -2.5 -1.7 4.0 1.6 1.5 0.9 2.7 4.1 2.3 2.0 Bare Earth Min 1.5 3.1 -0.3 2.1 7.0 1.5 1.3 2.0 5.2 4.8 5.0 2.4 1.7 -1.4 -0.5 -1.9 -2.2 2.3 -2.6 -0.5 0.8 -1.6 -1.6 3.0 0.5 1.7 1.0 1.1 4.6 2.1 2.5 Soil/Earth Temperatures Surface 6.7 5.0 3.1 7.5 8.0 4.5 5.5 6.6 8.0 8.4 8.3 6.4 4.8 3.5 3.0 3.0 4.8 4.6 5.0 5.6 5.1 4.7 7.2 10.0 8.0 8.7 9.7 6.5 9.6 8.2 5.5 5cm 4.7 4.7 2.6 6.2 8.5 4.3 4.8 4.3 6.3 5.6 6.9 5.8 4.4 2.7 2.4 2.2 2.7 4.1 2.2 3.3 4.3 3.4 3.0 6.4 6.0 5.8 5.8 6.4 7.7 5.8 6.0 10cm 4.8 5.2 3.3 6.0 8.4 5.0 5.2 4.4 6.4 5.7 7.1 6.2 4.9 3.3 2.6 3.0 3.3 4.6 3.2 3.9 4.7 3.6 3.6 6.5 6.2 6.3 6.4 6.8 7.8 6.6 7.0 20cm 5.6 6.0 5.0 5.9 7.7 6.4 5.9 5.4 6.5 7.0 7.3 6.8 5.9 4.9 4.2 4.1 4.5 5.4 5.1 5.4 5.7 5.0 5.1 7.7 6.7 7.2 7.4 7.4 7.9 7.5 8.2 30cm 5.6 6.0 5.4 5.6 7.0 6.7 6.2 5.6 6.3 7.1 7.4 7.1 6.3 5.7 5.0 5.0 5.0 5.5 5.4 5.6 5.9 5.5 5.6 7.0 7.0 7.5 7.6 7.5 7.9 8.0 8.2 40cm 5.6 5.7 5.9 5.4 6.8 6.6 6.2 5.6 6.1 6.7 7.2 7.0 6.3 5.7 5.0 5.0 5.0 5.4 5.5 5.4 5.8 5.4 5.4 6.3 6.8 7.2 7.4 7.2 7.6 7.8 8.0 50cm 5.6 6.0 6.0 5.6 6.5 6.7 6.5 6.0 6.2 6.9 7.1 7.2 6.8 6.3 5.2 5.1 5.6 5.8 6.0 6.0 6.2 6.0 6.0 6.5 7.0 7.5 7.5 7.7 7.7 8.0 8.0 100cm 4.8 5.0 5.0 5.0 5.5 5.5 5.7 5.7 5.7 5.7 6.0 6.0 6.1 6.1 5.8 5.8 5.8 5.7 5.7 5.7 5.8 5.8 5.9 6.0 6.0 6.4 6.5 6.4 6.7 6.9 7.1 State of the Ground Without snow 1 1 2 2 2 2 2 2 2 1 1 1 1 1 2 3 1 1 1 1 1 1 0 0 1 1 1 1 0 1 0 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 1 1 1 1 3 3 3 1 1 3 1 3 1 1 4 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 State of the Concrete 1 1 0 2 2 2 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Evaporation Hook-gauge reading 46.68 _ _ _ _ _ _ 72.01 49.39 _ _ _ _ _ _ _ 58.68 _ _ _ _ 50.13 _ _ _ _ _ _ 63.3 _ 55.32 Total evaporation (less rainfall) > > > > > > > 3.37 > > > > > > > > 12.76 > > > > 8.55 > > > > > > 12.79 > 7.98 Rainfall Total 4.7 _ 0.4 2.8 16.3 0.1 4.4 tr tr 0.4 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Duration 1.8 _ 0.3 3.0 12.0 1.8 _ _ _ 0.5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Acidity _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Run of Wind Miles 167.28 73.42 60.78 233.57 219.44 141.56 280.23 278.39 321.98 335.32 181.98 130.93 104.77 111.8 81.2 48.07 105.35 47.61 53.62 107.81 75.3 53.24 79.06 9.94 126.13 65.36 103.29 58.33 64.85 80.9 84.2 Mean 9.1 4 3.3 12.7 11.9 7.7 15.2 15.1 17.4 18.2 9.9 7.1 5.7 6.1 4.4 2.6 5.7 2.6 2.9 5.8 4.1 2.9 4.3 0.5 6.8 3.5 5.6 3.2 3.5 4.4 4.6 Gust 24 22 21 31 21 20 42 35 36 34 34 39 30 22 16 15 18 12 10 19 17 15 16 20 15 15 17 15 22 20 24 Sunshine 1.2 7.2 0.3 0.7 0.0 7.6 0.7 0.0 5.3 0.3 0.7 1.0 1.1 7.7 6.9 7.2 8.8 8.8 8.2 8.0 4.0 7.0 8.7 2.8 6.3 7.4 8.5 0.5 0.0 8.5 8.6 Statistics Saturated VP(Twb) 0.968 0.873 0.711 1.073 1.156 0.867 0.891 0.916 1.052 1.103 1.088 0.91 0.78 0.737 0.758 0.666 0.929 0.753 0.607 0.825 0.867 0.716 0.843 1.141 1.016 1.044 0.975 0.831 1.103 0.968 0.831 VP 0.954 0.866 0.704 1.066 1.149 0.86 0.857 0.862 0.971 1.035 1.034 0.883 0.739 0.724 0.744 0.659 0.787 0.713 0.466 0.744 0.86 0.709 0.728 1.059 0.982 0.983 0.833 0.817 1.049 0.812 0.757 Saturated VP 0.982 0.879 0.716 1.081 1.164 0.873 0.923 0.968 1.141 1.18 1.149 0.936 0.814 0.747 0.769 0.672 1.073 0.785 0.706 0.897 0.873 0.721 0.949 1.237 1.052 1.11 1.126 0.843 1.164 1.133 0.897 RH % 97.1 98.5 98.3 98.6 98.7 98.5 92.8 89 85.1 87.7 90 94.3 90.8 96.9 96.7 98.1 73.3 90.8 66 82.9 98.5 98.3 76.7 85.6 93.3 88.6 74 96.9 90.1 71.7 84.4 Dew Point 6.3 4.9 2 7.9 9 4.8 4.7 4.8 6.5 7.5 7.5 5.2 2.6 2.4 2.7 1 3.5 2.1 -3.7 2.7 4.8 2.1 2.4 7.8 6.7 6.7 4.3 4.1 7.7 4 3 Pressure 1013.0 1010.1 1017.9 1010.1 1009.4 1015.3 1014.0 1014.0 1013.2 1015.3 1010.2 1027.6 1039.5 1035.4 1036.7 1039.0 1037.9 1035.8 1031.4 1027.9 1026.9 1024.7 1023.2 1021.3 1023.4 1020.9 1018.5 1014.7 1013.1 1037.4 1025.5 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ 1 1 1 _ _ _ _ 1 1 _ _ _ _ _ 1 _ _ _