REGISTER OF CLIMATOLOGICAL OBSERVATIONS JUNE 2002 PITSFORD HALL WEATHER STATION, NORTHAMPTON, UNITED KINGDOM 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 0900 hours UTC Total Cloud 0 3 8 7 8 9 9 5 8 7 4 7 8 8 5 8 4 8 4 7 6 8 5 3 7 2 7 7 5 6 Wind Direction s sse ssw ssw nw n se e s s sw nnw sw sw ssw ssw sw w nnw ssw s ssw wnw ne nw nw nw nw wnw wnw Speed (knots) 6 3 8 7 8 6 3 3 8 17 7 10 11 8 11 9 12 5 2 1 8 7 3 2 3 7 11 3 9 7 Weather 0 2 3 3 3 12 28 2 25 3 1 3 3 2 1 50 3 2 2 2 2 3 2 2 3 2 2 2 2 2 Visibility 7 7 7 8 6 4 2 7 7 7 7 8 7 7 7 7 7 7 8 5 6 8 8 8 7 8 7 7 8 7 Screen (C) Dry Bulb 18.5 18.4 14.5 13.5 13.8 14.6 14.7 17.3 12.8 15.4 14.0 16.0 15.4 19.5 18.9 16.0 20.6 19.0 17.1 15.5 16.8 16.1 15.2 17.6 16.7 17.6 13.6 15.0 16.1 17.2 Wet Bulb 14.1 14.6 12.4 10.9 11.0 14.3 14.6 14.6 14.4 12.6 10.3 12.9 12.4 17.6 14.6 15.3 18.0 15.0 13.1 14.0 13.1 14.0 12.1 13.9 13.9 13.8 11.0 11.7 12.1 14.5 Max 22.1 25.0 17.0 17.3 15.2 15.5 17.4 20.0 15.6 16.8 17.4 17.5 19.5 20.6 20.6 21.1 23.5 21.5 21.0 22.0 20.4 17.8 20.5 21.4 20.3 23.9 18.6 18.8 19.5 20.6 Min 8.0 8.3 11.6 7.6 9.3 11.2 13.2 10.8 10.3 10.0 6.7 9.8 9.6 12.2 12.3 13.1 14.8 14.0 9.1 10.0 11.3 11.6 8.5 7.0 7.8 7.9 7.8 7.0 6.5 11.0 Ground Observations Grass Min 6.7 7.1 11.2 7.0 8.7 12.3 13.5 10.9 8.6 7.5 5.5 10.6 8.2 13.1 10.6 13.0 13.3 _ 9.1 9.0 11.4 10.8 6.4 5.2 7.0 6.8 6.8 5.9 5.0 9.7 Conc. Min 8.1 8.2 11.7 8.1 10.0 12.0 13.0 10.8 9.4 8.6 4.6 9.7 8.8 12.7 11.8 13.1 13.1 _ 9.0 10.2 11.5 12.2 7.6 7.4 8.2 7.0 8.4 6.9 6.5 10.6 Bare Earth Min 8.6 8.4 12.0 8.2 9.0 12.1 13.5 11.6 10.5 8.8 6.5 10.4 9.3 12.6 11.9 13.6 13.3 _ 9.5 9.5 11.6 12.8 8.3 7.9 8.1 8.3 8.5 7.1 7.0 11.0 Soil/Earth Temperatures Surface 19.9 21.2 17.9 17.7 _ _ _ 18.5 13.9 17.0 15.6 17.6 17.0 20.1 18.9 17.1 _ 19.5 19.6 _ 20.1 17.0 20.4 17.6 18.1 17.9 16.3 16.9 23.8 20.5 5cm 15.9 15.6 16.7 14.9 14.2 14.4 14.8 15.7 14.2 13.7 13.9 15.1 14.6 17.5 16.9 15.8 _ 18.2 17.4 16.2 17.8 17.4 15.4 17.2 17.2 17.2 17.4 16.6 17.1 17.3 10cm 15.2 15.3 17.0 14.8 14.8 14.6 15.0 15.2 14.6 13.8 13.6 14.9 14.5 16.8 16.2 16.1 _ 18.9 17.2 17.0 17.6 17.6 15.6 16.8 17.0 17.0 17.8 16.6 16.7 17.2 20cm 14.1 15.1 16.5 14.9 15.0 14.5 14.7 14.4 14.9 13.8 13.6 14.2 14.0 15.4 15.5 15.9 _ 15.0 16.7 17.0 17.0 17.1 15.9 14.4 16.5 16.4 17.5 16.2 15.9 16.6 30cm 14.4 15.2 16.2 15.4 15.5 14.6 15.0 14.7 15.2 14.1 13.8 14.5 14.5 15.2 15.4 16.1 _ 13.9 17.0 17.5 17.1 17.7 16.5 15.6 16.8 17.1 16.7 15.5 16.1 16.6 40cm 14.1 14.9 16.0 15.2 15.3 14.5 14.6 14.6 15.1 14.3 14.0 14.5 14.4 14.9 15.4 15.9 _ 14.0 17.0 17.0 17.0 17.0 16.4 15.4 16.5 16.8 16.3 15.9 16.1 16.5 50cm 14.4 15.0 15.9 15.5 15.2 14.5 14.9 14.9 15.2 14.5 14.5 14.6 14.8 15.0 15.7 16.0 _ 14.0 17.1 17.0 17.1 17.1 16.6 16.3 15.2 15.5 17.7 16.3 16.5 16.6 100cm 12.9 13.0 13.2 13.4 13.8 13.6 13.6 13.6 13.5 14.6 13.8 13.8 13.6 13.8 13.8 14.0 _ 14.6 14.8 14.9 15.0 15.0 15.2 15.4 15.0 15.2 15.4 15.4 15.4 15.4 State of the Ground Without snow 0 0 0 0 0 2 2 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 0 0 0 0 1 3 3 3 3 0 0 1 0 1 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 State of the Concrete 0 0 0 0 0 1 2 0 2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 Evaporation Hook-gauge reading 50.08 _ 68.99 _ _ _ _ _ _ _ _ _ _ _ 71.52 _ _ _ _ _ _ 57.72 _ _ _ _ _ _ _ 58.64 Total evaporation (less rainfall) > > 6.22 > > > > > > > > > > > 17.87 > > > > > > 16.70 > > > > > > > 31.62 Rainfall Total _ _ 0.1 _ 7.8 0.8 3.1 0.6 2.6 3.2 1.0 _ 0.7 0.5 2.5 _ _ _ _ _ 0.4 _ _ _ _ _ _ _ _ 1.0 Duration _ _ 0.3 _ 6.8 2.3 6.5 0.5 2.5 0.4 0.4 _ 3.0 1.3 1.8 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1.0 Acidity _ _ _ _ 6.38 4.86 6.21 _ _ 6.72 6.55 _ 6.62 6.46 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Run of Wind Miles 64.54 97.05 107.58 62.02 78.43 129.6 60 67.41 203.77 140.47 109.82 105.35 111.59 154.02 148.27 182.81 116.96 103.59 46.04 76.9 165.46 109.67 91.3 76.93 69.08 123.38 145.95 106.02 107.61 194.75 Mean 3.5 5.3 5.8 3.4 4.2 7 3.3 3.7 11 7.6 5.9 5.7 6 8.3 8 9.9 6.3 5.6 2.5 4.2 9 5.9 4.9 4.2 3.7 6.7 7.9 5.7 5.8 10.5 Gust <15 17 17 21 30 <15 <15 <15 24 28 20 11 18 22 23 22 19 20 <15 <15 19 20 19 16 16 25 31 23 19 24 Sunshine 12.2 7.5 2.9 1.8 0.1 0.0 0.0 3.6 2.6 11.2 8.5 1.9 2.2 2.0 4.7 3.2 7.1 10.6 8.3 5.1 5.6 4.3 10.2 10.0 6.5 10.2 9.0 5.0 7.4 2.4 Statistics Saturated VP(Twb) 1.61 1.663 1.441 1.305 1.313 1.631 1.663 1.663 1.641 1.46 1.253 1.489 1.441 2.014 1.663 1.739 2.065 1.706 1.508 1.599 1.508 1.599 1.413 1.589 1.589 1.579 1.313 1.376 1.413 1.652 VP 1.309 1.403 1.298 1.128 1.122 1.61 1.656 1.478 1.75 1.269 1.001 1.277 1.236 1.884 1.369 1.691 1.886 1.432 1.235 1.496 1.255 1.455 1.202 1.336 1.398 1.319 1.136 1.151 1.14 1.467 Saturated VP 2.131 2.118 1.652 1.548 1.579 1.663 1.674 1.976 1.479 1.751 1.599 1.819 1.751 2.268 2.185 1.819 2.428 2.199 1.951 1.762 1.914 1.831 1.728 2.014 1.902 2.014 1.558 1.706 1.831 1.963 RH % 61.4 66.2 78.6 72.9 71.1 96.8 98.9 74.8 118.3 72.5 62.6 70.2 70.6 83.1 62.7 93 77.7 65.1 63.3 84.9 65.6 79.5 69.6 66.3 73.5 65.5 72.9 67.5 62.3 74.7 Dew Point 11 12 10.8 8.7 8.7 14.1 14.5 12.8 15.4 10.5 7 10.6 10.1 16.5 11.6 14.9 16.6 12.3 10.1 13 10.3 12.6 9.7 11.3 11.9 11.1 8.8 9 8.9 12.7 Pressure 1025.1 1017.8 1008.3 1005.3 1000.7 1000.4 1002.4 1004.6 1004.3 1003.0 1010.4 1011.7 1012.6 1011.5 1011.7 1012.9 1012.7 1014.4 1021.9 1019.7 1019.7 1016.0 1020.0 1025.6 1026.4 1023.6 1019.7 1022.9 1022.1 1015.4 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ 1 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _