CLIMATOLOGICAL OBSERVATIONS - PITSFORD HALL WEATHER STATION - AUGUST 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 08:00 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 07:00 09:00 09:00 09:00 Total Cloud (oktas) 8 3 1 2 3 0 8 8 8 1 6 8 3 1 0 3 7 6 7 7 8 8 7 8 8 8 8 8 7 1 2 Wind Direction ssw nnw ne e e calm nw n calm calm ene nnw nw nnw e e e nw nw nw sw nw nw ene ene ne nne ene nne nnw nw Speed (knots) 8 3 3 1 3 0 4 3 0 0 6 4 3 8 3 3 7 3 3 1 3 6 3 4 8 7 6 3 10 8 3 Weather 2 2 2 5 5 5 10 10 10 5 5 10 2 2 0 2 3 3 2 2 2 2 2 2 50 2 2 21 2 2 2 Visibility 7 8 8 7 7 7 5 5 5 7 5 5 8 8 9 8 8 7 7 7 7 8 7 6 8 8 8 7 7 8 8 Screen (C) Dry Bulb 16.7 18.8 19.4 23.7 22.6 25.4 22.3 19.8 25.1 27.0 22.0 19.4 22.1 17.3 18.9 19.9 17.1 22.2 16.8 13.5 16.6 20.5 22.0 19.5 17.6 17.1 16.0 13.3 14.3 15.7 14.0 Wet Bulb 16.0 14.7 15.2 19.1 19.1 19.9 19.6 17.6 21.0 21.0 20.0 18.0 17.0 14.1 14.2 14.6 14.5 18.5 14.1 11.7 14.0 18.0 19.2 17.8 15.0 14.8 13.7 12.3 12.8 12.1 11.1 Max 21.5 23.8 27.6 30.6 28.9 32.5 29.2 26.4 34.1 30.9 27.0 25.6 25.8 23.4 22.7 23.0 25.4 25.2 21.6 22.7 22.9 25.5 27.5 23.1 19.0 20.5 21.1 18.0 19.4 19.7 18.9 Min 14.6 9.6 10.2 13.5 15.7 16.6 15.1 16.3 15.0 17.9 18.1 17.7 14.7 9.8 9.4 10.6 10.4 15.9 10.0 8.5 12.5 15.9 15.6 17.8 14.4 14.3 14.1 12.6 11.0 5.9 6.4 Ground Observations (C) Grass Min 13.7 7.1 7.3 10.4 13.5 13.5 12.0 14.1 12.6 14.6 16.4 16.3 12.1 7.3 7.0 8.1 7.7 12.7 6.9 5.2 9.0 13.3 11.7 16.2 11.6 12.0 13.1 11.6 9.9 2.6 2.6 Conc. Min 15.1 10.2 11.0 14.0 16.5 16.6 15.4 17.0 15.6 18.1 18.0 19.1 15.0 11.1 10.6 11.6 11.4 16.3 11.6 10.0 13.5 15.4 15.2 18.6 15.6 14.6 15.1 14.0 11.5 6.1 7.1 Bare Earth Min 15.1 10.3 10.1 13.0 16.1 16.0 15.3 16.1 15.6 17.4 18.1 18.2 15.1 10.9 10.2 10.6 10.6 15.6 11.2 8.9 13.0 15.2 14.4 18.3 14.9 14.5 14.9 13.2 11.6 6.6 7.1 Soil/Earth Temperatures (C) Surface 17.5 19.5 17.3 22.9 22.9 24.9 24.4 23.4 25.4 24.2 22.8 20.6 22.0 17.4 20.9 21.8 19.3 22.8 17.0 16.0 16.2 21.1 23.1 22.1 20.2 19.4 19.4 15.8 16.5 16.4 14.0 5cm 17.6 16.6 16.8 18.9 20.5 20.4 21.2 21.4 21.2 22.3 21.6 20.8 20.1 18.4 18.5 18.8 18.2 19.8 18.0 16.5 15.9 19.2 19.6 20.4 19.2 18.3 18.2 18.1 16.4 14.8 14.6 10cm 18.2 17.2 17.4 19.4 21.0 20.7 21.7 21.9 21.7 22.9 22.1 21.5 20.7 19.1 19.2 19.5 18.8 20.3 18.3 17.4 18.4 19.6 19.9 20.9 19.8 18.8 18.7 18.8 16.9 15.3 15.3 20cm 18.6 17.9 18.4 19.5 20.8 20.5 21.5 21.9 21.6 23.0 22.0 21.7 21.1 20.6 20.1 20.0 19.6 20.3 19.6 18.0 19.0 19.4 19.8 20.6 20.2 19.1 19.1 19.4 17.9 16.8 16.9 30cm 19.0 18.5 18.7 19.4 20.4 20.4 21.0 21.4 21.3 22.1 21.7 21.6 21.3 20.7 20.1 19.9 19.5 20.0 20.0 19.0 19.0 19.4 19.8 20.4 20.0 19.3 19.2 19.4 18.1 17.3 17.1 40cm 19.0 18.5 18.6 19.3 20.2 20.5 21.0 21.3 21.2 22.1 21.7 21.6 21.2 20.7 20.1 19.9 19.5 20.0 20.0 19.0 19.0 19.3 19.7 20.3 20.0 19.2 19.2 19.2 18.2 17.3 17.1 50cm 19.1 19.0 19.0 19.4 20.0 20.2 20.6 21.0 21.1 21.6 21.6 21.5 21.4 20.9 20.5 20.1 19.9 20.0 20.0 19.5 19.3 19.4 19.6 20.0 20.0 19.5 19.4 19.4 18.6 18.0 17.6 100cm 17.4 17.5 17.4 17.6 17.7 17.9 18.0 18.2 18.5 18.7 18.8 18.8 19.0 18.9 18.9 18.8 18.6 18.6 18.3 18.4 18.1 18.2 18.2 18.2 18.3 18.2 18.2 18.0 18.0 17.9 17.6 State of the Ground Without snow 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Snow depth _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ State of the Grass 3 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 3 0 0 0 State of the Concrete 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 Evaporation (mm) Hook-gauge reading 66.01 _ _ 65.88 _ _ 50.82 _ 64.96 _ _ _ _ 64.84 _ _ _ 63.01 _ _ _ _ 51.38 _ _ 71.16 _ _ _ _ 54.71 Total evaporation (less rainfall)> > > 11.20 > > 15.06 > 9.61 > > > > 21.72 > > > 14.75 > > > > 11.63 > > 7.15 > > > > 16.75 Rainfall (mm) Total 0.1 _ _ _ _ _ _ _ _ 5.9 _ _ _ _ _ _ _ _ _ _ _ _ _ _ tr _ 0.1 0.2 _ _ _ Duration (hrs) 0.1 _ _ _ _ _ _ _ _ 1.5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 0.6 2.7 _ _ _ Intensity (mean over 24 hrs, mm/hr) 1.0 _ _ _ _ _ _ _ _ 3.9 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 0.2 0.1 _ _ _ Run of Wind Miles (over 24 hrs) 101.83 52.11 43.26 62.74 72.56 88.51 75 33.85 42.1 94.64 89.92 59.11 106.59 77.31 47.42 83.82 68.83 74 63.7 72 166.81 99.84 62.97 117.78 102.97 87.88 72.13 126.23 117.21 84.59 72.23 Mean (mph) 5.5 2.8 2.3 3.4 3.9 4.8 4.1 1.8 2.3 5.1 4.9 3.2 5.8 4.2 2.6 4.5 3.7 4 3.5 3.9 9 5.4 3.4 6.4 5.6 4.8 3.9 6.8 6.3 4.6 3.9 Gust (mph) 16 <15 <15 15 25 16 17 <15 <15 28 18 <15 19 19 <15 18 16 20 22 <15 22 20 <15 20 18 16 16 23 29 21 17 Sunshine (hrs) 1.3 12.6 12.5 10.2 5.4 12.2 10.0 8.2 11.6 6.6 10.0 4.9 10.5 12.1 9.3 12.2 6.7 6.5 5.2 9.7 4.9 2.2 3.7 7.2 0.0 1.9 4.0 0.2 5.6 10.5 6.0 Statistics Saturated VP(Twb) 1.819 1.674 1.728 2.212 2.212 2.325 2.282 2.014 2.488 2.488 2.34 2.065 1.939 1.61 1.62 1.663 1.652 2.131 1.61 1.376 1.599 2.065 2.226 2.039 1.706 1.684 1.569 1.431 1.479 1.413 1.322 VP 1.771 1.394 1.441 1.896 1.971 1.947 2.096 1.863 2.206 2.075 2.202 1.969 1.589 1.391 1.299 1.3 1.474 1.877 1.425 1.253 1.421 1.893 2.033 1.922 1.528 1.527 1.412 1.363 1.377 1.167 1.124 Saturated VP 1.902 2.171 2.254 2.932 2.744 3.246 2.694 2.311 3.189 3.568 2.645 2.254 2.662 1.976 2.185 2.325 1.951 2.678 1.914 1.548 1.89 2.413 2.645 2.268 2.014 1.951 1.819 1.528 1.631 1.785 1.599 RH % 93.1 64.2 63.9 64.7 71.8 60 77.8 80.6 69.2 58.2 83.3 87.4 59.7 70.4 59.5 55.9 75.6 70.1 74.5 80.9 75.2 78.5 76.9 84.7 75.9 78.3 77.6 89.2 84.4 65.4 70.3 Dew Point (C) 15.6 11.9 12.4 16.6 17.3 17.1 18.2 16.4 19.1 18.1 19 17.2 13.9 11.9 10.8 10.8 12.7 16.5 12.2 10.3 12.2 16.6 17.8 16.9 13.3 13.3 12.1 11.6 11.7 9.2 8.7 Pressure (mb) 1014.7 1021.2 1021.5 1023.0 1023.9 1018.6 1020.6 1019.7 1018.7 1015.3 1017.4 1020.0 1019.9 1019.4 1019.5 1019.9 1015.7 1011.1 1019.1 1021.0 1015.6 1013.3 1018.8 1021.0 1020.6 1017.6 1015.9 1009.6 1006.4 1016.3 1020.0 Days with thunder _ _ _ _ _ _ _ _ _ 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail<5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ hail>/=5mm _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fog _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _