***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1963 MONTH DECEMBER ....... 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 33.7 37.2 34.9 0 070 13.8 16 070 M 1 675.9 02 27.0 35.0 31.3 T 360 17.1 22 360 M 5 684.0 03 26.7 31.1 29.6 T 360 15.1 22 360 M 4 680.8 04 30.0 31.1 30.6 T 360 9.1 15 360 M 7 681.4 05 30.3 31.7 30.5 T 360 11.2 12 360 M 8 681.1 06 30.6 32.8 31.5 T 360 8.6 12 020 M 4 683.1 07 25.3 32.2 28.9 0 070 7.2 12 340 M 2 683.2 08 27.5 29.4 29.0 0 050 11.2 14 050 M 0 686.3 09 26.7 28.3 27.4 0 020 18.4 23 340 M 2 686.8 10 21.1 30.6 M 0 M M M M M M M 11 22.2 25.0 M 0 M M M M M M M 12 25.6 26.1 M T 360 16.4 21 360 M M M 13 23.7 26.4 25.1 T 360 11.5 18 360 M 8 694.2 14 21.1 25.0 24.0 T 360 8.6 17 360 M 8 693.7 15 23.1 27.8 25.7 0 360 2.3 14 360 M 8 698.3 16 23.7 26.1 25.1 T 360 13.8 18 360 M 8 700.0 17 24.2 25.6 25.2 T 360 8.1 10 340 M 6 697.3 18 25.3 28.9 26.5 T 050 3.5 8 090 M 4 695.9 19 24.8 28.3 26.9 T 360 4.6 9 360 M 5 694.2 20 25.6 28.3 26.6 T 020 6.9 12 320 M 8 689.8 21 26.1 29.4 28.1 0 050 4.6 7 360 M 8 689.8 22 18.7 29.4 22.6 T 140 3.5 9 140 M 7 689.3 23 19.2 22.8 21.3 T 290 6.0 16 290 M 7 688.5 24 19.2 24.4 22.2 T 290 5.2 16 250 M 8 685.6 25 23.9 28.3 26.6 T 360 10.4 14 320 M 8 686.8 26 25.9 29.4 27.8 0 340 6.9 10 320 M 7 691.8 27 24.8 30.0 28.6 T 070 11.5 14 070 M 2 690.5 28 23.7 28.9 25.2 T 360 12.7 16 070 M 6 687.4 29 23.7 26.7 24.8 0 360 18.4 24 360 M 2 693.2 30 25.0 26.1 25.3 0 360 11.5 17 360 M 0 698.5 31 22.6 25.0 23.9 T 360 11.5 16 360 M 1 700.6 AVG 24.9 28.6 27.0 T 360 10.0 24 360 M 5 689.6 29th AVG MONTHLY -27.0 PCPN TRACE NR DAYS CLEAR 08 HIGHEST -18.9 ON 22nd SUNSHINE M PARTLY CLOUDY 07 LOWEST -37.2 ON 1st CLOUDY 13 HIGH PRESSURE 701.0 ON 31st LOW PRESSURE 672.6 ON 1st NET CHANGE IN SNOWSTAKE FIELD: M SNOWSTAKE DATA NOT AVAILABLE. 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 -18.9 -18.7 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 25.1 24.9 Avg Wnd Spd 9.6 10.0 Avg Press 689.8 689.6 Min T Max Press Fastest Wnd MPH 23.0 24.0 Avg T Min Press Changes to Daily Data: Max Temp Day 1 2 5 7 8 13 15 16 17 18 From: 33.9 27.2 30.6 26.7 27.8 23.9 23.3 23.9 24.4 25.6 To: 33.7 27.0 30.3 25.3 27.5 23.7 23.1 23.7 24.2 25.3 Day 19 22 23 24 26 27 28 29 31 From: 25.0 18.9 21.1 19.4 26.1 25.0 24.4 23.9 22.8 To: 24.8 18.7 19.2 19.2 25.9 24.8 23.7 23.7 22.6 Min Temp Day 13 From: 25.6 To: 26.4 Avg Temp Day 1 2 3 4 5 6 7 8 9 13 14 15 16 From: 35.6 31.1 28.9 30.0 31.1 31.7 29.4 28.9 27.8 25.0 23.3 25.6 25.0 To: 34.9 31.3 29.6 30.6 30.5 31.5 28.9 29.0 27.4 25.1 24.0 25.7 25.1 Day 17 18 19 20 21 22 23 25 27 28 29 30 From: 25.0 27.2 26.7 27.2 27.8 24.4 22.2 26.1 27.8 26.7 25.6 25.6 To: 25.2 26.5 26.9 26.6 28.1 22.6 21.3 26.6 28.6 25.2 24.8 25.3 Fast MPH Day 1 4 25 31 From: 15 13 13 14 To: 16 15 14 16 Avg Wind MPH Day 1 2 3 4 5 6 7 8 23 24 From: 10.5 16.1 14.1 7.8 9.9 7.3 4.6 12.7 8.1 9.2 To: 13.8 17.1 15.4 9.1 11.2 8.6 7.2 11.2 6.0 5.2 Avg Press Day 25 From: 691.8 To: 686.8 Number of NCDC observations per day: 8