***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1961 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 57.0 62.8 60.8 0 090 18.0 21 050 0.0 2 683.0 02 54.7 59.4 56.3 0 050 19.2 23 050 0.0 1 681.4 03 56.1 59.4 57.6 T 020 24.4 28 360 0.0 2 685.2 04 53.9 61.1 57.0 0 360 14.7 25 360 0.0 6 690.0 05 57.8 62.8 60.4 0 090 16.1 20 090 0.0 0 681.9 06 60.0 62.2 60.8 0 090 16.5 18 090 0.0 1 680.0 07 61.1 64.4 62.7 0 140 14.0 16 110 0.0 0 679.6 08 58.9 64.4 62.3 0 090 13.1 17 090 0.0 2 679.8 09 54.4 62.8 57.8 0 090 9.3 14 090 0.0 5 682.7 10 47.5 62.8 57.2 0 090 8.5 13 090 0.0 4 692.6 11 39.2 53.3 44.6 T 090 6.8 12 070 0.0 5 694.7 12 48.1 57.8 52.5 0 140 10.4 18 140 0.0 5 690.4 13 53.3 64.4 60.7 0 140 14.0 21 140 0.0 1 686.0 14 61.4 66.1 64.0 0 110 12.3 16 140 0.0 2 690.1 15 53.6 62.2 57.7 0 110 12.6 16 090 0.0 3 691.2 16 62.2 65.6 64.4 0 110 12.4 16 090 0.0 1 691.5 17 60.6 66.1 63.8 T 070 14.5 20 050 0.0 0 693.9 18 51.7 61.7 56.9 0 050 19.1 25 050 0.0 2 686.2 19 53.6 59.4 56.1 0 360 13.4 16 360 0.0 2 684.4 20 58.1 67.2 63.4 0 090 10.0 15 090 0.0 2 686.8 21 51.4 60.0 55.1 0 090 12.4 16 140 0.0 4 684.4 22 53.6 63.3 58.6 0 090 14.4 26 090 0.0 1 679.5 23 62.2 69.4 66.4 0 090 14.4 16 090 0.0 0 673.9 24 67.8 70.0 68.7 0 090 10.9 15 090 0.0 1 673.6 25 66.1 71.1 69.6 0 140 9.4 15 110 0.0 1 670.5 26 61.4 72.2 67.8 0 090 7.9 13 090 0.0 2 667.8 27 63.3 67.8 65.6 0 140 9.3 18 140 0.0 2 673.3 28 41.1 63.9 49.7 T 180 5.8 9 180 0.0 6 676.3 29 40.6 61.1 47.5 T 140 13.1 18 090 0.0 6 672.2 30 61.1 71.1 69.7 0 090 13.7 23 090 0.0 0 671.8 AVG 55.7 63.9 59.9 T 090 13.0 28 360 0.0 2 682.5 3rd AVG MONTHLY -59.9 PCPN TRACE NR DAYS CLEAR 21 HIGHEST -39.2 ON 11th SUNSHINE 0.0/ 0% PARTLY CLOUDY 09 LOWEST -72.2 ON 26th CLOUDY 00 HIGH PRESSURE 695.2 ON 11th LOW PRESSURE 666.1 ON 26th NET CHANGE IN SNOWSTAKE FIELD: M 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 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 -39.4 -39.2 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 55.8 55.7 Avg Wnd Spd Avg Press 682.4 682.5 Min T Max Press Fastest Wnd MPH Avg T Min Press Changes to Daily Data: Max Temp Day 1 2 10 11 12 14 15 19 20 21 22 26 From: 57.2 55.0 47.8 39.4 48.3 61.7 53.9 53.9 58.3 51.7 53.9 61.7 To: 57.0 54.7 47.5 39.2 48.1 61.4 53.6 53.6 58.1 51.4 53.6 61.4 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 60.0 57.2 57.8 57.8 60.6 61.1 62.8 61.7 58.9 55.6 46.7 53.3 58.9 63.9 58.3 To: 60.8 56.3 57.6 57.0 60.4 60.8 62.7 62.3 57.8 57.2 44.6 52.5 60.7 64.0 57.7 Day 16 17 18 19 20 21 22 23 24 25 26 28 29 30 From: 63.9 63.3 56.7 56.7 62.8 56.1 58.9 66.1 68.9 68.9 67.2 52.8 51.1 66.1 To: 64.4 63.8 56.9 56.1 63.4 55.1 58.6 66.4 68.7 69.6 67.8 49.7 47.5 69.7 Number of NCDC observations per day: 8