***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1963 MONTH APRIL ....... 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 55.3 64.4 59.5 T 090 9.8 13 110 0.0 5 681.0 02 60.8 63.9 62.2 0 050 15.9 22 050 0.0 1 673.1 03 57.8 62.8 59.9 T 020 20.1 25 020 0.0 5 675.8 04 56.4 61.7 59.0 0 070 16.0 21 050 0.0 5 676.7 05 60.8 65.6 63.4 0 090 14.3 20 070 0.0 1 676.2 06 64.7 66.7 65.4 0 090 13.1 16 090 0.0 2 677.5 07 63.9 66.7 64.7 0 110 12.1 16 090 0.0 1 680.4 08 64.4 67.2 65.8 0 110 12.0 16 110 0.0 0 682.6 09 59.4 66.7 62.8 0 110 15.4 20 110 0.0 0 687.6 10 46.4 61.1 55.5 T 090 12.4 18 110 0.0 5 690.8 11 46.1 57.2 54.3 T 110 12.2 18 090 0.0 3 691.8 12 52.0 58.3 54.3 0 110 15.4 21 110 0.0 5 683.2 13 58.3 66.1 62.2 0 110 17.6 25 110 0.0 2 677.4 BS 14 66.1 69.4 67.8 0 090 13.9 16 090 0.0 1 678.4 15 65.8 68.9 67.3 0 090 13.3 16 050 0.0 1 679.3 16 62.0 66.1 63.8 T 020 16.5 20 020 0.0 5 681.8 17 54.7 62.2 57.1 T 360 19.2 23 360 0.0 6 683.2 18 57.8 65.6 62.6 0 050 14.9 17 020 0.0 1 676.6 19 62.8 66.7 64.9 0 360 19.9 25 360 0.0 7 673.5 20 61.7 64.4 62.9 0 360 19.6 23 360 0.0 5 673.1 21 62.2 66.7 64.3 0 020 18.2 22 020 0.0 2 673.7 22 64.4 67.2 65.5 0 020 20.3 25 020 0.0 2 673.1 23 62.5 65.6 64.0 0 020 21.5 27 020 0.0 5 673.9 24 55.3 62.8 59.9 0 360 21.0 25 360 0.0 5 676.7 25 55.6 64.4 58.3 0 020 19.9 27 020 0.0 3 674.9 26 55.3 64.4 59.8 T 020 19.9 25 020 0.0 2 671.9 BS 27 54.2 60.0 56.3 0 360 23.0 28 020 0.0 2 672.0 BS 28 45.3 60.6 49.3 T 320 21.5 31 320 0.0 8 679.9 BS 29 44.4 51.7 47.9 T 340 19.6 25 340 0.0 6 686.4 BS 30 51.7 63.9 58.1 T 020 13.9 21 020 0.0 1 679.2 AVG 57.6 64.0 60.6 T 020 16.7 31 320 0.0 3 678.7 28th AVG MONTHLY -60.6 PCPN TRACE NR DAYS CLEAR 15 HIGHEST -44.4 ON 29th SUNSHINE 0.0/ 0% PARTLY CLOUDY 13 LOWEST -69.4 ON 14th CLOUDY 02 HIGH PRESSURE 692.5 ON 11th LOW PRESSURE 670.3 ON 26th NET CHANGE IN SNOWSTAKE FIELD: -0.30 inches 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 data changed to reflect values in MPH listed 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 Monthly Averages: (All temps are Minus C) From To From To From To Max T 57.7 57.6 Avg Wnd Spd 19.3 16.7 Avg Press Min T Max Press Fastest Wnd MPH 36 31 Avg T 60.9 60.6 Min Press Changes to Daily Data: Max Temp Day 1 2 4 5 6 10 12 15 16 17 23 24 26 27 28 From: 55.6 61.1 56.7 61.1 65.0 46.7 52.2 66.1 62.2 55.0 62.8 55.6 55.6 54.4 45.6 To: 55.3 60.8 56.4 60.8 64.7 46.4 52.0 65.8 62.0 54.7 62.5 55.3 55.3 54.2 45.3 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 15 16 From: 60.0 62.8 60.6 59.4 63.3 66.1 65.6 66.1 63.3 53.9 51.7 55.6 67.8 64.4 To: 59.5 62.2 59.9 59.0 63.4 65.4 64.7 65.8 62.8 55.5 54.3 54.3 67.3 63.8 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 58.9 61.7 65.0 63.3 64.4 66.1 64.4 59.4 60.0 60.0 57.2 53.3 48.3 57.8 To: 57.1 62.6 64.9 62.9 64.3 65.5 64.0 59.9 58.3 59.8 56.3 49.3 47.9 58.1 Avg MPH Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 11.3 18.3 23.1 18.4 16.5 15.1 13.9 13.8 17.7 14.3 14.0 17.7 20.3 16.0 15.3 To: 9.8 15.9 20.1 16.0 14.3 13.1 12.1 12.0 15.4 12.4 12.2 15.4 17.6 13.9 13.3 Day 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 19.0 22.1 17.2 22.9 22.6 21.0 23.4 24.8 24.2 22.9 22.9 26.5 24.8 22.6 16.0 To: 16.5 19.2 14.9 19.9 19.6 18.2 20.3 21.5 21.0 19.9 19.9 23.0 21.5 19.6 13.9 Fast MPH Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 15 25 29 24 23 18 18 18 23 21 21 25 29 18 18 To: 13 22 25 21 20 16 16 16 20 18 18 21 25 16 16 Day 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 23 27 20 29 27 25 29 31 29 31 29 32 36 29 24 To: 20 23 17 25 23 22 25 27 25 27 25 28 31 25 21 Number of NCDC observations per day: 8