CLIMATOLOGICAL OBSERVATIONS - OCTOBER 2003 - PITSFORD HALL WEATHER STATION, NORTHAMPTON, UNITED KINGDOM Observations at Pitsford Hall 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 Hour of observations 09:00 09:00 09:00 08:00 08:00 09:00 09:00 09:00 09:00 09:00 08:00 08:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 09:00 Total Cloud (oktas) 4 8 5 7 0 5 7 8 3 5 8 7 3 6 3 0 0 3 4 3 0 8 0 4 7 1 1 6 8 2 8 Wind Direction ne ne nnw nnw nnw nw nw nw w nw calm ese se e e ene ne ene ene ne nw ne ene nnw nnw n w ssw calm ssw nne Speed (knots) 5 4 4 6 11 8 12 9 7 9 0 3 5 7 6 8 14 10 7 13 0 8 12 6 3 10 1 3 0 3 2 Weather 3 60 1 2 0 1 60 3 1 1 2 2 1 2 2 0 0 0 3 3 0 60 0 2 2 2 10 5 61 2 61 Visibility 6 5 6 8 8 8 7 8 8 7 7 7 7 7 7 7 6 6 7 8 8 7 8 6 7 7 7 6 7 8 7 Screen (C) Dry Bulb 14.7 11.6 14.5 10.0 2.0 12.3 8.1 15.5 15.0 13.4 8.4 8.4 12.1 11.0 9.1 9.9 6.5 7.0 8.0 4.5 0.0 4.6 5.3 3.6 4.4 3.5 4.0 4.5 7.4 4.9 7.3 Wet Bulb 13.1 10.8 13.1 8.5 1.1 9.6 7.4 13.0 12.0 12.0 8.1 7.7 10.5 9.6 7.8 8.4 6.0 6.4 6.7 4.0 -0.1 4.2 3.4 3.3 3.8 3.2 3.5 3.8 7.3 4.5 7.2 Max 18.2 15.2 18.4 12.8 11.0 15.5 14.3 16.0 20.8 17.0 18.4 16.2 16.5 17.7 15.6 15.5 14.5 14.4 12.5 11.5 9.6 7.9 10.5 10.7 11.5 10.7 12.0 10.1 10.5 10.6 8.0 Min 8.4 7.4 11.4 8.6 0.6 2.0 6.8 4.6 11.1 11.5 5.4 6.1 7.8 7.5 5.4 5.1 5.2 5.4 6.0 4.1 -0.9 -0.5 3.6 0.1 -0.8 1.4 1.2 0.4 4.4 2.1 4.8 Ground Observations (C) Grass Min 4.9 2.9 8.5 4.3 -2.4 -1.0 5.5 0.0 7.0 8.4 1.4 2.3 4.6 4.5 1.6 1.1 1.1 1.5 1.2 0.0 -4.5 -2.9 -1.0 -4.0 -4.8 -2.8 -3.6 -3.8 4.5 -2.4 1.6 Conc. Min 7.5 6.2 10.5 8.0 0.6 1.4 7.3 3.9 9.5 10.5 5.1 5.6 6.1 6.6 4.5 3.6 3.8 4.1 4.5 3.8 -0.5 0.0 1.6 -0.5 -1.4 0.4 0.0 -0.4 4.6 1.7 3.2 Bare Earth Min 7.2 5.6 9.7 7.2 0.8 1.5 7.0 3.7 9.3 10.0 5.1 5.2 6.5 5.9 3.7 3.2 3.4 3.3 4.0 3.5 _ _ _ -0.7 -1.3 0.5 0.1 -0.3 4.5 2.0 3.5 Soil/Earth Temperatures (C) Surface 13.7 12.5 14.8 10.6 4.1 10.9 9.4 12.6 12.0 13.3 9.6 8.9 10.0 10.6 8.5 8.1 6.2 6.5 7.0 5.4 2.5 5.0 4.3 3.5 5.3 3.3 3.9 4.8 7.6 4.6 7.6 5cm 11.8 11.0 12.8 11.4 7.8 10.0 9.7 9.4 11.8 12.4 9.7 9.6 9.9 9.9 8.6 8.2 6.8 8.7 7.6 7.4 5.2 6.2 5.6 4.3 4.0 4.4 4.6 4.2 6.7 5.7 7.4 10cm 12.0 11.4 13.1 11.8 8.5 10.4 10.1 9.6 12.0 12.6 10.3 10.2 10.3 10.3 9.1 8.5 9.0 9.0 8.0 8.0 6.0 6.6 6.1 4.7 4.4 4.8 5.0 4.4 6.8 6.3 7.6 20cm 12.7 12.4 13.0 12.8 11.1 11.1 11.1 10.4 12.2 12.7 11.9 11.6 11.2 11.3 10.7 10.1 9.7 9.4 9.4 9.2 7.5 7.5 7.6 6.6 6.2 6.6 6.4 6.0 7.1 7.5 7.7 30cm 13.4 13.2 13.5 13.4 12.1 11.6 11.7 11.2 12.4 12.9 12.5 12.1 12.0 11.8 11.3 10.7 10.5 10.0 9.8 9.6 9.0 8.0 8.2 7.3 7.0 7.1 7.6 6.6 7.5 7.6 7.9 40cm 13.4 13.2 13.3 13.3 12.1 11.7 11.7 11.3 12.2 12.7 12.5 12.1 11.9 11.7 11.4 10.8 10.5 10.0 9.8 9.6 9.0 8.0 8.4 7.5 7.1 7.1 6.9 6.6 7.4 7.7 7.9 50cm 14.0 13.8 13.7 13.8 13.0 12.4 12.3 12.0 12.4 13.1 13.0 12.8 12.4 12.5 12.2 11.5 11.1 10.7 10.5 10.5 10.2 9.5 9.2 8.6 8.2 8.1 7.9 7.6 8.0 8.3 7.9 100cm 14.1 14.0 14.0 14.0 13.7 13.4 13.2 13.2 13.1 13.0 13.1 13.0 12.8 12.4 12.7 12.6 12.2 12.2 12.0 11.8 11.4 11.4 11.0 10.8 10.5 10.3 10.0 9.8 9.7 9.6 9.6 State of the Ground Without snow 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 1 1 1 1 7 3 3 3 3 3 1 1 1 0 1 1 1 1 1 3 5 3 4 7 4 7 4 4 3 3 3 State of the Concrete 0 1 0 0 0 1 2 1 1 1 0 0 0 0 0 0 1 1 1 1 3 2 0 1 0 1 0 0 1 1 1 Evaporation (mm) Hook-gauge reading 55.95 _ _ _ _ _ _ _ _ _ 44.1 _ _ 80.3 _ _ _ _ _ _ _ _ _ _ 68.68 _ _ _ 55.3 _ 77 Total evaporation (less rainfall) > > > > > > > > > > 18.15 > > 3.05 > > > > > > > > > > 13.52 > > > 1.48 > 0.30 Rainfall (mm) Total 0.1 0.8 _ 0.6 0.5 3.7 tr tr 0.6 _ _ _ _ _ _ _ _ _ tr _ 0.2 0.3 1.4 _ 2.9 0.1 _ 12.7 1.2 18.3 2.5 Duration (hrs) 0.1 1.0 _ 0.9 0.3 1.1 _ _ 1.0 _ _ _ _ _ _ _ _ _ _ _ 0.7 0.5 0.2 _ 1.0 _ _ 17.7 2.4 17.4 2.6 Intensity (mean over 24 hrs, mm/hr) 1.0 0.8 _ 0.7 1.5 3.3 _ _ 0.6 _ _ _ _ _ _ _ _ _ _ _ 0.3 0.6 7.0 _ 2.9 _ _ 0.7 0.5 1.1 1.0 Run of Wind Miles (over 24 hrs) 118.3 60 112 171.16 156.77 200.49 157.47 174.41 136.59 78.19 45.33 105.8 115.22 135.67 145.18 138.9 207.83 181.28 67.59 102 57.8 139.98 105.77 99.05 119.05 75.04 59.68 127.6 59.84 116.7 160.35 Mean (mph) 6.4 3.3 6.1 9.3 8.5 10.9 8.5 9.4 7.4 4.2 2.5 5.7 6.2 7.3 7.9 7.5 11.3 9.8 3.7 5.5 3.1 7.6 5.7 5.4 6.4 4.1 3.2 6.9 3.2 6.3 8.7 Gust (mph) 27 18 25 32 25 34 40 34 25 22 <15 20 20 23 24 28 25 25 30 <15 18 23 30 24 21 18 <15 17 <15 23 25 Sunshine (hrs) 6.8 0.5 2.7 2.1 8.0 4.3 5.2 2.4 5.6 1.5 6.8 3.3 5.3 5.5 8.6 7.5 8.0 8.6 2.3 7.8 8.2 0.0 8.0 7.0 2.6 7.5 8.4 0.1 2.0 6.5 0.0 Statistics Saturated VP(Twb) 1.508 1.296 1.508 1.11 0.662 1.196 1.03 1.499 1.403 1.403 1.081 1.052 1.27 1.196 1.059 1.103 0.936 0.962 0.982 0.814 0.607 0.825 0.78 0.774 0.802 0.769 0.785 0.802 1.023 0.843 1.016 VP 1.399 1.242 1.412 1.008 0.601 1.012 0.983 1.328 1.198 1.308 1.061 1.004 1.161 1.101 0.971 1.001 0.902 0.921 0.894 0.78 0.6 0.798 0.652 0.754 0.761 0.749 0.751 0.755 1.016 0.816 1.009 Saturated VP 1.674 1.367 1.652 1.229 0.706 1.431 1.081 1.762 1.706 1.538 1.103 1.103 1.413 1.313 1.156 1.22 0.968 1.002 1.073 0.843 0.611 0.849 0.891 0.791 0.837 0.785 0.814 0.843 1.03 0.867 1.023 RH % 83.6 90.9 85.5 82 85.1 70.7 90.9 75.4 70.2 85 96.2 91 82.2 83.9 84 82 93.2 91.9 83.3 92.5 98.2 94 73.2 95.3 90.9 95.4 92.3 89.6 98.6 94.1 98.6 Dew Point (C) 12 10.2 12.1 7.1 -0.2 7.1 6.7 11.2 9.6 10.9 7.8 7 9.2 8.4 6.5 7 5.5 5.8 5.3 3.4 -0.2 3.7 0.9 2.9 3.1 2.8 2.9 2.9 7.2 4 7.1 Pressure (mb) 1009.1 1011.9 1008.5 1010.7 1017.8 1005.5 1004.3 1012.1 1016.4 1015.8 1023.1 1024.1 1020.8 1024.8 1029.3 1030.7 1025.8 1018.9 1012.6 1010.0 1011.0 1007.0 1018.1 1021.9 1022.7 1015.4 1022.2 1015.1 992.8 987.9 975.5 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _