PITSFORD HALL WEATHER STATION, NORTHAMPTON, UNITED KINGDOM REGISTER OF CLIMATOLOGICAL OBSERVATIONS - AUGUST 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 3 8 5 7 7 0 8 8 8 6 5 2 8 0 6 4 8 8 8 6 3 8 4 8 8 8 8 7 2 4 Wind Direction wsw nne ne nne nnw nnw nnw nnw se n wsw nnw ssw ssw ssw n se sse n nnw n nnw nw nw nne n n ne ssw ssw nnw Speed (knots) 3 2 3 3 4 9 7 4 1 4 3 15 7 2 2 7 2 1 1 10 9 7 2 5 8 9 14 1 4 8 14 Weather 51 2 5 3 3 3 5 2 61 2 2 2 2 3 5 2 5 10 50 10 2 2 10 2 10 20 10 10 11 1 2 Visibility 7 8 5 8 7 7 7 8 7 7 7 7 8 9 7 8 6 7 4 5 7 7 5 7 6 6 6 3 7 8 8 Screen (C) Dry Bulb 15.0 20.5 16.8 16.5 18.4 18.9 22.4 16.1 15.8 15.5 17.1 18.3 21.5 19.6 21.0 19.7 23.7 18.0 17.7 17.0 18.2 15.9 15.9 19.4 15.1 13.0 14.7 13.6 16.0 18.0 16.7 Wet Bulb 14.2 15.3 15.5 14.5 16.2 16.6 18.1 15.1 15.3 14.3 15.2 15.3 18.1 16.9 17.5 15.2 19.1 16.2 17.1 15.8 15.7 13.9 14.8 16.0 14.1 12.2 12.5 13.4 15.4 17.1 12.7 Max 20.6 23.6 22.4 21.0 20.5 24.4 26.1 19.6 18.3 22.1 20.5 21.7 22.9 26.2 26.7 25.4 30.8 26.0 20.3 21.0 21.5 21.7 20.7 22.1 19.2 16.6 20.5 23.1 22.7 23.6 19.7 Min 16.7 10.9 12.1 12.1 13.5 14.8 14.5 13.2 12.9 13.4 13.5 13.9 12.3 13.4 14.8 14.1 13.6 15.1 15.6 15.5 11.0 9.5 12.6 11.0 12.0 8.5 10.7 12.0 12.5 13.2 11.0 Ground Observations Grass Min 13.7 9.8 9.4 9.5 10.7 13.2 12.1 12.9 12.8 13.5 11.5 11.4 9.9 10.7 12.7 11.6 11.1 14.0 15.1 15.0 9.9 8.2 10.3 8.6 9.4 5.9 8.6 9.6 11.0 11.1 8.1 Conc. Min _ 10.7 11.3 11.1 12.5 14.5 13.6 14.0 13.5 13.7 13.0 13.1 11.5 12.4 14.1 14.0 12.8 15.2 15.8 15.9 10.3 9.8 12.9 10.6 11.1 7.6 10.4 11.8 11.2 11.5 9.6 Bare Earth Min _ 12.5 12.4 12.6 13.6 15.5 14.5 14.4 14.0 14.8 13.5 13.7 12.3 13.4 14.9 13.9 13.9 16.0 16.8 16.6 11.9 _ 13.6 11.7 12.5 8.5 10.9 12.8 12.7 13.0 11.1 Soil/Earth Temperatures Surface 16.7 22.4 19.0 20.6 18.5 19.9 23.8 19.5 17.8 17.4 20.6 20.8 23.2 20.6 22.9 21.2 26.7 19.4 19.0 18.7 21.4 17.1 17.5 21.4 16.3 14.3 15.0 16.0 17.0 20.7 18.6 5cm 17.6 18.0 17.3 17.1 17.8 18.4 19.3 18.4 17.2 16.9 17.6 17.7 18.3 18.3 18.5 18.6 19.8 19.2 19.4 18.6 17.3 16.4 17.0 17.6 16.4 14.5 14.6 15.8 16.2 16.7 16.1 10cm 18.4 18.1 17.8 17.6 18.1 18.5 19.3 19.0 17.8 17.6 17.9 17.9 18.0 18.3 18.7 19.1 19.7 19.9 20.0 19.2 17.8 17.1 17.6 17.6 17.1 15.3 15.4 16.2 16.8 17.2 16.7 20cm 18.9 17.7 17.9 18.0 17.9 18.0 18.7 19.0 18.0 17.8 18.0 17.8 17.5 17.9 18.6 19.1 19.4 20.0 20.1 19.4 18.2 17.9 18.0 17.5 17.5 16.1 15.8 16.5 17.2 17.3 17.2 30cm 19.4 18.4 18.4 18.5 18.3 18.4 19.0 19.4 18.6 18.4 18.5 18.4 18.3 18.4 19.0 19.4 19.5 20.0 20.0 19.6 19.1 18.6 18.5 18.1 18.0 17.3 16.7 17.0 17.5 17.3 17.8 40cm 19.2 18.4 18.4 18.4 18.2 18.4 18.9 19.2 18.5 18.1 18.3 18.2 18.1 18.4 18.9 19.3 19.5 19.9 19.9 19.5 18.9 18.6 18.4 18.1 18.0 17.1 16.7 17.0 17.5 17.2 17.7 50cm 19.4 18.9 18.6 18.6 18.5 18.4 19.0 19.2 18.8 18.4 18.5 18.5 18.5 18.5 19.0 19.4 19.4 19.9 20.0 19.6 19.4 18.6 18.8 18.5 18.4 17.9 17.2 17.2 17.5 17.4 18.0 100cm 17.5 17.6 17.4 17.4 17.3 17.2 17.3 17.3 17.3 17.3 17.4 17.4 17.3 17.3 17.4 17.4 17.6 17.7 17.8 18.0 18.0 17.9 17.7 17.7 17.6 17.4 17.2 17.2 17.1 17.2 17.0 State of the Ground Without snow 1 1 1 1 0 1 0 1 1 1 1 1 1 1 0 0 0 9 1 1 1 0 0 0 1 1 1 1 1 1 0 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 3 1 1 1 1 1 1 3 3 1 1 1 1 1 1 0 1 1 3 1 1 1 1 1 1 3 1 1 2 1 1 State of the Concrete 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 Evaporation Hook-gauge reading 69.25 _ _ _ _ _ _ 72.71 _ _ _ _ _ 69 _ _ _ _ _ _ _ 48.2 _ _ _ 70.84 _ _ _ _ 55.92 Total evaporation (less rainfall) > > > > > > > 17.54 > > > > > 16.41 > > > > > > > 27.20 > > > 6.82 > > > > 15.12 Rainfall Total 1.5 _ 0.3 _ 1.4 _ 9.6 8.2 0.1 4.4 _ _ _ _ _ _ _ 0.5 4.7 1.2 _ _ _ 1.8 _ _ _ _ _ 0.2 _ Duration 2.0 _ 0.5 _ 0.8 _ 1.0 9.3 0.3 0.8 _ _ _ _ _ _ _ 1.8 1.0 0.8 _ _ _ 2.0 _ _ _ _ _ 0.3 _ Acidity 6.28 _ _ _ 6.19 _ 6.41 6.39 _ 6.34 _ _ _ _ _ _ _ _ 6.29 _ _ _ _ 5.96 _ _ _ _ _ _ _ Run of Wind Miles 18.27 38.51 53.63 56.09 76.44 65.84 76.28 35.45 66.54 54.44 113.73 103.68 83.11 80.74 84.09 44.03 99.99 69.86 72.03 69.79 62.15 41.73 49.12 65.76 85.89 89.5 77.6 48.4 89.3 175.03 114.72 Mean 1 2.1 2.9 3 4.1 3.6 4.1 1.9 3.6 2.9 6.2 5.6 4.5 4.4 4.6 2.4 5.4 3.8 3.9 3.8 3.4 2.3 2.7 3.6 4.7 4.8 4.2 2.6 4.8 9.5 6.2 Gust <15 <15 <15 <15 17 18 16 <15 <15 17 26 26 20 16 16 <15 22 <15 18 18 18 <15 17 21 18 22 17 <15 <15 26 22 Sunshine 1.3 7.8 4.9 5.5 1.9 7.0 7.9 1.0 0.3 3.3 2.8 8.7 4.5 9.4 10.7 7.9 8.7 6.0 3.0 2.4 8.2 5.3 1.0 4.3 0.8 0.0 1.8 2.8 0.0 2.5 6.3 Statistics Saturated VP(Twb) 1.62 1.739 1.762 1.652 1.843 1.89 2.078 1.717 1.739 1.631 1.728 1.739 2.078 1.927 2.001 1.728 2.212 1.843 1.951 1.796 1.785 1.589 1.684 1.819 1.61 1.422 1.45 1.538 1.751 1.951 1.469 VP 1.565 1.383 1.673 1.515 1.692 1.732 1.783 1.649 1.705 1.549 1.598 1.534 1.845 1.742 1.761 1.42 1.896 1.72 1.91 1.714 1.614 1.452 1.609 1.586 1.542 1.367 1.3 1.524 1.71 1.889 1.196 Saturated VP 1.706 2.413 1.914 1.878 2.118 2.185 2.711 1.831 1.796 1.762 1.951 2.104 2.566 2.282 2.488 2.296 2.932 2.065 2.026 1.939 2.091 1.808 1.808 2.254 1.717 1.499 1.674 1.558 1.819 2.065 1.902 RH % 91.7 57.3 87.4 80.7 79.9 79.3 65.8 90.1 94.9 87.9 81.9 72.9 71.9 76.3 70.8 61.8 64.7 83.3 94.3 88.4 77.2 80.3 89 70.4 89.8 91.2 77.7 97.8 94 91.5 62.9 Dew Point 13.7 11.8 14.7 13.2 14.9 15.2 15.7 14.5 15 13.5 14 13.4 16.2 15.3 15.5 12.2 16.6 15.1 16.8 15.1 14.1 12.5 14.1 13.9 13.4 11.6 10.8 13.3 15 16.6 9.6 Pressure 1011.9 1010.2 1011.7 1012.0 1014.3 1016.6 1017.2 1012.1 1002.4 1003.7 1006.5 1011.9 1018.8 1019.4 1014.7 1019.1 1013.2 1009.3 1011.8 1013.6 1018.9 1019.3 1018.9 1020.3 1024.7 1025.1 1021.7 1022.7 1019.7 1018.4 1022.8 Days with thunder _ _ _ _ _ _ 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1 _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _