***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1961 MONTH SEPTEMBER ....... 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 52.0 57.8 54.2 0 360 22.6 25 360 0.0 2 688.0 02 49.4 60.6 55.0 0 070 19.7 24 360 0.0 2 685.7 03 47.0 51.1 48.6 T 360 23.5 28 360 0.0 8 691.8 04 42.2 47.8 45.2 T 360 20.7 24 360 0.0 7 696.1 05 43.6 49.4 45.7 0 360 23.3 29 020 0.0 3 693.9 06 47.9 53.3 51.0 0 020 16.6 21 360 0.0 4 694.8 07 53.8 62.8 58.9 0 020 15.6 20 020 0.0 2 693.7 08 40.9 61.7 50.9 0 050 23.0 39 360 0.0 3 690.4 BS 09 37.5 43.3 39.0 0 360 30.2 44 360 0.0 8 684.4 BS 10 37.8 47.8 43.6 0 360 30.4 35 360 0.0 6 686.3 BS 11 48.4 52.8 50.6 0 360 27.4 35 360 0.0 2 689.0 BS 12 52.5 61.7 57.1 0 050 17.1 24 020 0.0 2 685.9 13 54.7 62.8 59.5 0 360 17.5 23 360 0.0 7 688.6 14 49.2 57.2 51.8 0 360 18.6 22 340 0.0 7 691.8 15 54.2 57.8 55.2 0 360 17.1 21 360 0.0 6 692.7 16 55.5 63.3 60.7 0 090 15.4 20 070 0.0 1 686.9 17 62.0 65.6 62.7 0 050 15.9 18 020 0.0 0 685.4 18 65.5 68.9 66.5 0 070 12.2 15 110 0.0 2 686.6 19 65.0 69.4 67.6 0 140 11.9 20 140 0.0 2 685.7 20 63.6 68.3 65.6 0 140 13.3 21 140 0.0 2 685.9 21 59.9 66.7 62.0 0 090 13.4 18 110 M 6 685.2 22 59.5 66.1 61.7 0 090 17.2 20 110 M 2 679.9 23 65.0 69.4 67.4 0 090 15.6 18 070 M 2 674.7 24 61.0 67.8 63.9 0 090 16.5 20 050 M 4 671.0 25 63.1 65.6 63.8 0 090 17.1 18 090 M 3 665.3 26 62.0 67.8 65.4 0 090 17.0 22 360 M 4 664.4 27 62.0 64.4 62.8 0 360 21.5 23 360 M 6 670.5 28 62.0 64.4 63.4 0 360 18.0 21 360 M 7 670.3 29 62.5 65.0 63.7 0 020 21.0 25 020 M 5 667.1 30 59.7 63.3 61.0 0 360 25.3 30 360 M 6 665.6 AVG 54.6 60.8 57.5 T 360 19.2 44 360 M 4 683.3 9th AVG MONTHLY -57.5 PCPN TRACE NR DAYS CLEAR 12 HIGHEST -37.5 ON 9th SUNSHINE M PARTLY CLOUDY 12 LOWEST -69.4 ON 19th,23rd CLOUDY 06 HIGH PRESSURE 697.1 ON 5th LOW PRESSURE 663.2 ON 26th NET CHANGE IN SNOWSTAKE FIELD: -0.10 inches Sunrise occurred at 0331UTC on day 21. Sunrise based on US Naval Observatory time. Insufficient Data available for Sunshine Hours Computation. 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 converted from inches of Hg to millibars. 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 -37.8 -37.5 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 54.8 54.6 Avg Wnd Spd Avg Press 683.2 683.3 Min T Max Press Fastest Wnd MPH Avg T 57.8 57.5 Min Press Changes to Daily Data: Max Temp Day 1 3 5 8 9 12 13 14 15 17 From: 52.2 47.7 44.0 41.7 39.7 52.7 55.0 49.4 54.4 62.2 To: 52.0 47.0 43.6 40.9 37.5 52.5 54.7 49.2 54.2 62.0 Day 20 25 26 27 28 29 30 From: 63.9 63.2 62.2 62.2 62.2 62.8 60.1 To: 63.6 63.1 62.0 62.0 62.0 62.5 59.7 Min Temp No Daily Changes Avg Temp Day 1 3 4 5 6 7 8 9 10 12 13 14 15 16 From: 55.0 49.4 45.0 46.7 50.6 58.3 51.7 40.6 42.8 57.2 58.9 53.3 56.1 59.4 To: 54.2 48.6 45.2 45.7 51.0 58.9 50.9 39.0 43.6 57.1 59.5 51.8 55.2 60.7 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 63.9 67.2 67.2 66.1 63.3 62.8 67.2 64.4 64.4 65.0 63.3 63.3 63.9 61.7 To: 62.7 66.5 67.6 65.6 62.0 61.7 67.4 63.9 63.8 65.4 62.8 63.4 63.7 61.0 Number of NCDC observations per day: 8