CLIMATOLOGICAL OBSERVATIONS - PITSFORD HALL WEATHER STATION - JULY 2003 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 09:00 09:00 09:00 09:00 09:00 09:00 09:00 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 08:00 Total Cloud (oktas) 8 8 8 6 8 7 4 8 4 7 6 4 3 2 3 4 8 6 5 6 7 7 7 5 8 5 7 5 8 7 8 Wind Direction calm n nw nnw nnw nnw nw ssw sse ssw wnw wsw sse ese nne nne ssw wsw ssw ssw ssw ssw s w s ssw nnw ssw ssw nw wnw Speed (knots) 0 4 13 5 1 1 1 3 1 6 4 1 7 6 4 6 9 7 7 7 7 6 9 6 8 3 3 7 6 6 3 Weather 2 2 2 1 2 2 2 2 2 2 2 2 2 2 1 2 3 1 2 2 25 3 3 2 63 2 2 2 20 2 2 Visibility 6 7 6 7 7 8 9 8 7 7 8 8 8 8 8 7 7 8 8 7 7 8 9 7 7 9 7 9 8 7 7 Screen (C) Dry Bulb 15.2 13.9 13.6 17.8 15.1 17.3 18.7 19.5 22.2 22.4 17.0 14.8 17.9 17.8 20.2 18.9 17.3 16.2 19.6 20.2 19.1 19.3 18.3 19.0 15.1 17.9 16.1 19.5 18.2 18.4 16.7 Wet Bulb 14.2 13.1 13.2 14.9 13.8 13.3 14.6 16.9 18.0 17.2 14.8 12.7 13.9 16.1 17.1 17.4 16.6 14.5 16.8 15.5 16.9 16.1 14.6 15.8 14.9 15.1 15.2 15.1 16.9 16.8 14.9 Max 17.5 20.6 17.6 20.0 17.5 20.7 22.7 24.2 27.0 28.0 22.4 25.0 27.7 30.1 31.6 28.7 17.7 21.5 27.8 25.5 24.4 23.0 23.7 22.9 17.6 20.7 22.1 23.5 20.5 23.5 22.5 Min 12.0 12.8 12.0 10.9 10.0 11.8 10.6 13.3 15.4 15.3 13.9 9.2 11.9 10.9 14.2 15.3 16.7 12.9 13.7 13.5 16.1 12.8 15.0 13.1 14.5 10.0 13.9 9.9 15.3 15.5 15.1 Ground Observations (C) Grass Min 10.8 11.4 11.9 8.4 7.2 10.4 7.6 10.6 12.6 12.2 11.4 7.1 8.4 8.1 11.6 12.1 15.4 10.2 10.7 9.9 11.3 10.6 11.8 11.1 13.4 7.0 12.5 6.6 14.1 14.4 12.6 Conc. Min 12.4 13.5 13.0 11.2 10.0 12.8 11.5 13.8 15.6 15.2 14.6 10.7 12.5 11.2 14.6 15.7 17.1 12.1 13.6 13.5 14.0 13.0 15.4 13.3 15.1 10.0 14.6 10.6 16.0 15.9 15.9 Bare Earth Min 13.2 13.6 13.4 11.4 10.5 12.6 10.9 13.1 15.1 15.1 14.6 15.4 13.8 13.3 15.7 17.3 19.6 15.5 15.7 15.4 17.5 _ 15.1 13.6 15.4 11.0 14.8 11.1 15.6 16.1 14.9 Soil/Earth Temperatures (C) Surface 17.0 15.2 15.2 18.5 16.2 18.5 20.8 21.2 24.0 25.0 21.4 17.9 19.2 21.7 24.0 23.0 18.7 17.5 21.5 27.7 20.6 21.8 20.1 21.5 16.6 20.3 18.3 24.1 20.2 19.6 18.2 5cm 16.4 15.8 16.0 16.8 15.8 16.4 17.4 18.4 20.0 20.7 19.2 16.9 18.1 18.7 20.1 20.8 20.1 16.6 17.4 20.1 18.6 19.1 19.2 19.0 17.6 16.7 17.4 17.6 18.2 18.2 18.1 10cm 17.0 16.7 15.6 17.0 16.0 16.6 17.4 18.4 19.8 20.7 19.9 17.1 19.1 19.5 20.8 21.6 21.1 17.5 18.0 20.2 19.0 19.2 19.6 19.3 18.8 16.9 17.7 17.7 18.6 18.6 18.6 20cm 17.2 16.2 17.0 16.7 16.4 16.5 17.1 17.9 18.9 20.0 20.5 19.4 20.0 20.4 21.3 22.0 21.5 18.7 18.6 19.5 19.4 19.0 19.2 19.0 19.2 17.2 17.6 17.5 18.5 18.4 19.0 30cm 17.6 17.7 17.5 17.4 17.2 17.1 17.6 18.2 18.8 19.7 20.3 19.6 20.1 20.2 20.7 21.3 21.0 19.4 19.2 19.7 19.7 19.5 19.4 19.4 19.5 18.2 18.4 18.4 18.6 18.6 19.1 40cm 17.7 17.6 17.6 17.3 17.1 17.0 17.5 17.9 18.6 19.6 20.1 19.5 19.7 19.9 20.4 21.0 20.9 19.5 19.1 19.8 19.7 19.5 19.4 19.4 19.4 18.4 18.3 18.4 18.6 18.6 19.0 50cm 17.8 17.6 17.6 17.5 17.5 17.2 17.6 18.0 18.5 19.2 19.7 19.6 19.6 19.8 20.3 20.6 20.6 19.7 19.4 19.9 19.7 19.6 19.5 19.5 19.5 18.8 18.6 18.7 18.8 18.8 19.0 100cm 16.3 16.3 16.1 16.2 16.1 16.1 16.1 16.2 16.4 16.5 16.7 16.8 17.1 17.2 17.3 17.6 17.7 17.7 17.7 17.7 17.7 17.7 17.7 17.7 17.6 17.6 17.4 17.4 17.4 17.4 17.3 State of the Ground Without snow 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 1 1 1 1 1 1 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 3 3 3 3 1 0 0 0 0 0 0 0 0 0 0 0 3 3 0 0 1 0 0 0 3 1 3 0 3 3 1 State of the Concrete 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 3 0 0 0 2 0 0 0 1 0 0 Evaporation (mm) Hook-gauge reading 57.58 _ _ _ 58.4 _ _ 71.82 _ _ 78.16 _ _ _ _ _ _ _ _ _ 49.82 _ _ _ _ 65.38 _ _ _ _ 66.01 Total evaporation (less rain) > > > > 5.68 > > 8.33 > > 12.37 > > > > > > > > > 38.44 > > > > 0.94 > > > > 7.77 Rainfall (mm) Total 1.4 4.7 0.4 _ _ _ 0.1 _ _ _ _ _ _ _ _ 8.8 1.3 _ _ 1.4 0.4 _ 0.1 5.9 10.1 8.0 _ 2.0 5.4 0.3 0.7 Duration (hrs) 1.6 9.5 0.2 _ _ _ 0.1 _ _ _ _ _ _ _ _ 0.8 3.5 _ _ 1.1 0.5 _ 0.1 6.6 6.6 4.2 _ 1.2 4.1 0.3 0.8 Intensity (mean over 24 hrs, mm/hr) 0.9 0.5 2.0 _ _ _ 1.0 _ _ _ _ _ _ _ _ 11.7 0.4 _ _ 1.3 0.8 _ 1.0 0.9 1.5 1.9 _ 1.7 1.3 1.0 0.9 Run of Wind Miles (over 24 hrs) 91.21 113 10.78 197.5 39 47.69 83.81 64.25 68.47 92.11 120 21.6 74.11 96.49 76.8 86.98 133.8 112.8 98.4 174.92 35.32 196.43 155.84 122.5 89.15 77.62 95 169.07 124.09 98.73 152.62 Mean (mph) 4.9 6.1 0.6 10.7 2.1 2.6 4.5 3.5 3.7 5 6.5 1.2 4 5.2 4.2 4.7 7.2 6.1 5.3 9.5 1.9 10.6 8.4 6.6 4.8 4.2 5.1 9.2 6.7 5.3 8.3 Gust (mph) 22 21 20 20 <15 <15 <15 15 <15 20 25 12 18 18 16 17 24 20 26 25 22 17 23 19 19 <15 20 21 19 21 18 Sunshine (hrs) 0.6 3.2 2.4 5.3 0.0 3.0 8.5 3.5 11.4 7.8 6.4 14.3 15.7 11.5 11.7 6.4 1.0 11.5 11.7 13.0 5.4 5.7 3.9 8.7 2.2 1.3 7.8 7.6 0.7 7.8 1.1 Statistics Saturated VP(Twb) 1.62 1.508 1.518 1.695 1.579 1.528 1.663 1.927 2.065 1.963 1.684 1.469 1.589 1.831 1.951 1.988 1.89 1.652 1.914 1.762 1.927 1.831 1.663 1.796 1.695 1.717 1.728 1.717 1.927 1.914 1.695 VP 1.552 1.453 1.491 1.497 1.49 1.255 1.383 1.749 1.777 1.606 1.533 1.326 1.316 1.715 1.738 1.885 1.842 1.536 1.722 1.44 1.776 1.612 1.41 1.577 1.681 1.525 1.666 1.416 1.838 1.804 1.572 Saturated VP 1.728 1.589 1.558 2.039 1.717 1.976 2.158 2.268 2.678 2.711 1.939 1.684 2.052 2.039 2.369 2.185 1.976 1.843 2.282 2.369 2.212 2.24 2.104 2.199 1.717 2.052 1.831 2.268 2.091 2.118 1.902 RH % 89.8 91.4 95.7 73.4 86.8 63.5 64.1 77.1 66.4 59.2 79.1 78.7 64.1 84.1 73.4 86.3 93.2 83.3 75.5 60.8 80.3 72 67 71.7 97.9 74.3 91 62.4 87.9 85.2 82.6 Dew Point (C) 13.5 12.5 12.9 13 12.9 10.3 11.8 15.4 15.6 14.1 13.3 11.1 11 15.1 15.3 16.6 16.2 13.4 15.1 12.4 15.6 14.1 12.1 13.8 14.8 13.3 14.6 12.1 16.2 15.9 13.7 Pressure (mb) 996.7 1003.7 1010.3 1014.6 1017.9 1020.2 1021.3 1020.1 1020.5 1016.6 1017.9 1022.5 1019.3 1014.9 1010.1 1005.0 1006.2 1016.3 1014.9 1012.1 1010.2 1015.8 1014.8 1010.5 1005.1 1006.6 1007.6 1017.1 1017.4 1012.7 1015.3 Days with thunder _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _