LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1959 MONTH MAY ....... ALL TEMPERATURES MINUS C .............. DAY TEMPERATURE C. PCPN AVG WND FASTEST SUN SKY STN WX MAX MIN AVG SPEED MILE SHINE COVER PRESS DIR MPH SPD DIR HRS 01 49.2 58.9 53.3 T 020 16.3 24 020 0.0 0 675.5 02 42.5 53.3 47.1 0 020 19.2 24 360 0.0 0 674.7 03 47.0 60.6 55.4 T 070 11.9 18 020 0.0 0 674.6 04 58.6 62.8 60.9 T 090 12.6 17 020 0.0 0 670.8 05 59.2 64.4 62.2 T 020 12.6 16 020 0.0 0 682.8 06 59.7 63.3 61.6 T 050 13.8 19 050 0.0 0 681.8 07 53.6 61.1 57.2 T 020 18.8 24 360 0.0 0 671.9 08 52.0 61.1 55.6 T 360 15.3 18 360 0.0 0 672.9 09 50.9 61.1 55.4 T 360 13.4 16 360 0.0 1 674.2 10 45.9 58.9 48.9 T 360 16.7 25 360 0.0 6 674.1 11 47.5 53.9 50.2 T 020 14.5 21 020 0.0 4 669.5 12 53.9 61.1 56.3 T 050 13.6 18 050 0.0 1 663.4 13 59.7 64.4 60.8 T 050 12.2 21 050 0.0 0 662.0 14 59.7 62.2 61.0 T 050 17.9 23 050 0.0 0 659.6 15 61.1 67.2 63.9 T 050 11.4 17 050 0.0 0 665.4 16 53.6 63.3 59.1 T 360 15.2 18 020 0.0 1 678.8 17 49.2 54.4 52.0 T 020 19.1 23 020 0.0 2 684.1 18 47.0 55.0 49.8 T 020 19.3 24 020 0.0 2 687.6 19 54.7 64.4 57.4 0 050 15.6 22 050 0.0 0 682.6 20 57.0 64.4 61.9 T 050 14.9 20 050 0.0 0 699.9 21 47.5 58.3 52.4 T 020 17.1 22 050 0.0 1 708.5 22 47.8 60.0 55.9 T 090 10.1 18 110 0.0 1 702.9 23 52.5 60.6 55.6 T 020 13.2 23 020 0.0 7 692.7 24 49.7 54.4 52.5 T 050 14.0 20 050 0.0 3 687.9 25 42.5 55.0 48.5 T 020 12.7 18 020 0.0 3 690.7 26 44.2 56.1 51.2 T 360 17.4 25 360 0.0 5 692.8 27 44.8 54.4 50.2 T 020 18.6 24 050 0.0 3 696.1 28 53.6 58.9 57.2 T 070 11.5 18 020 0.0 0 697.3 29 56.4 60.0 58.4 T 070 8.7 13 050 0.0 1 692.2 30 57.5 64.4 59.6 T 020 9.0 13 020 0.0 0 690.3 31 63.6 68.3 66.2 T 070 9.4 13 090 0.0 0 692.8 AVG 51.9 59.9 55.7 020 14.4 25 360 0.0 1 681.9 10th,26th AVG MONTHLY -55.7 PCPN TRACE NR DAYS CLEAR 24 HIGHEST -42.5 ON 2nd,25th SUNSHINE 0.0/ 0% PARTLY CLOUDY 06 LOWEST -68.3 ON 31st CLOUDY 01 HIGH PRESSURE 709.8 ON 21st LOW PRESSURE 659.0 ON 14th NET CHANGE IN SNOWSTAKE FIELD: 9.99 SNOWSTAKE DATA NOT AVAILABLE. The following data was changed from the old LCD: All Average Temps recalculated for 24hrs instead of Max+Min/2. Individual Data changed to reflect extremes from LCD and NCDC Data. All Sky Cover changed to Octas. Station Pressure data taken from NCDC data. No data on original LCD. All wind and pressure data taken from original LCD unless otherwise indicated. Prevailing and peak wind direction converted from cardinal direction to degrees. Changed Extremes: From To Max T -42.8 -42.5 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 52.5 51.9 Avg Wnd Spd Avg Press 682.4 681.9 Min T 58.9 59.9 Max Press 709.4 709.8 Fastest Wnd MPH Avg T Min Press Changes to Daily Data: Max Temp Day 1 2 3 4 5 6 7 8 9 10 11 13 14 From: 49.4 42.8 45.6 58.9 59.4 60.0 53.9 52.2 51.1 46.1 47.8 60.0 60.0 To: 49.2 42.5 47.0 58.6 59.2 59.7 53.6 52.0 50.9 45.9 47.5 59.7 59.7 Day 16 17 18 19 20 21 23 24 25 26 27 28 29 30 31 From: 53.9 49.4 47.2 55.0 57.2 47.8 52.8 50.0 42.8 44.4 44.4 53.9 56.7 57.2 63.9 To: 53.6 49.2 47.0 54.7 57.0 47.5 52.5 49.7 52.5 44.2 44.8 53.6 56.4 57.5 63.6 Min Temp Day 9 16 From: 27.8 57.8 To: 61.1 63.3 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 54.2 48.1 53.1 60.8 61.9 61.7 57.5 56.7 39.4 52.5 50.8 57.5 62.2 61.1 64.2 55.8 To: 53.3 47.1 55.4 60.9 62.2 61.6 57.2 55.6 55.4 48.9 50.2 56.3 60.8 61.0 63.9 59.1 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 51.9 51.1 59.7 60.8 53.1 53.9 56.7 52.2 48.9 50.3 49.4 56.4 58.3 60.8 66.1 To: 52.0 49.8 57.4 61.9 52.4 55.9 55.6 52.5 48.5 51.2 50.2 57.2 58.4 59.6 66.2 Avg MPH Day 31 From: 8.2 To: 9.4 Number of NCDC observations per day: 24