***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1960 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 36.1 41.7 38.1 0 020 18.4 26 020 0.0 8 682.3 IF 02 35.6 47.2 40.2 0 020 16.1 23 020 0.0 6 685.1 IFBS 03 40.3 55.6 47.9 0 360 13.5 18 360 0.0 4 687.1 IF 04 42.5 51.7 46.3 0 020 13.8 22 020 0.0 6 685.4 IF 05 48.6 54.4 51.3 T 020 11.6 18 020 0.0 6 680.7 IF 06 49.2 55.0 52.7 0 020 14.4 24 020 0.0 5 682.7 IFBS 07 40.3 50.0 43.2 0 360 15.7 26 020 0.0 8 685.1 IFBS 08 40.3 47.8 44.1 T 020 14.7 21 020 0.0 7 683.2 IF 09 45.3 51.7 48.8 0 360 19.0 25 020 0.0 6 675.1 BS 10 51.4 58.3 54.5 0 020 16.9 24 020 0.0 3 672.9 11 57.0 58.9 57.7 0 050 14.4 23 050 0.0 5 670.7 12 55.3 60.0 58.0 0 020 17.8 26 020 0.0 3 673.9 13 53.3 55.6 54.3 0 050 17.3 25 020 0.0 2 675.9 14 47.5 54.4 51.6 0 020 11.3 20 020 0.0 6 682.4 15 47.2 51.7 49.1 T 070 10.4 16 070 0.0 2 685.4 16 48.1 56.7 53.2 T 070 14.9 22 070 0.0 0 683.2 17 55.3 62.2 58.5 T 090 14.0 21 110 0.0 0 680.2 18 62.0 64.4 62.5 T 090 13.0 16 090 0.0 0 679.6 19 63.1 67.8 65.2 T 110 10.7 18 110 0.0 0 674.9 20 62.5 66.7 64.3 T 090 12.7 20 090 0.0 1 671.0 21 61.4 65.0 63.2 T 070 13.5 20 070 0.0 0 672.0 22 59.2 67.8 64.5 T 050 13.2 20 020 0.0 2 678.0 23 57.0 61.7 59.0 T 050 10.7 16 050 0.0 5 682.5 24 60.8 66.7 62.3 T 110 18.2 21 110 0.0 0 681.2 25 67.0 70.0 69.1 T 110 12.0 16 090 0.0 0 675.9 26 67.8 71.1 68.8 T 090 12.2 18 110 0.0 0 673.6 27 64.7 71.7 67.7 T 110 11.9 21 110 0.0 0 674.6 28 60.8 65.0 62.7 T 110 15.1 22 110 0.0 0 678.0 29 62.5 70.6 66.8 T 110 12.4 17 110 0.0 0 679.6 30 69.4 71.7 70.5 T 090 8.4 14 090 0.0 0 683.0 AVG 53.7 59.8 56.5 T 020 13.9 26 020 0.0 3 679.2 1st,7th,12th AVG MONTHLY -56.5 PCPN TRACE NR DAYS CLEAR 16 HIGHEST -35.6 ON 2nd SUNSHINE 0.0/ 0% PARTLY CLOUDY 11 LOWEST -71.7 ON 27th,30th CLOUDY 03 HIGH PRESSURE 688.6 ON 3rd,4th LOW PRESSURE 669.8 ON 11th 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. All Daily STN Press taken from NCDC Data except as indicated below. Individual Data changed to reflect extremes from LCD and NCDC Data. All Sky Cover changed to Octas. Wind speed converted from knots to MPH. 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 53.9 53.7 Avg Wnd Spd Avg Press 678.5 679.2 Min T Max Press 688.6 688.8 Fastest Wnd MPH Avg T 56.9 56.5 Min Press Changes to Daily Data: Max Temp Day 3 4 5 6 7 8 9 10 11 12 14 16 From: 40.6 42.8 48.9 50.0 40.6 40.6 45.6 51.7 57.2 55.6 47.8 48.3 To: 40.3 42.5 48.6 49.2 40.3 40.3 45.3 51.4 57.0 55.3 47.5 48.1 Day 17 18 19 20 21 22 23 24 25 27 28 29 From: 55.6 62.2 63.3 62.8 61.7 59.4 57.2 61.1 67.2 65.0 61.1 62.8 To: 55.3 62.0 63.1 62.5 61.4 59.2 57.0 60.8 67.0 64.7 60.8 62.5 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 38.9 41.4 48.1 47.2 51.7 52.5 47.2 44.2 48.6 55.0 58.1 57.8 54.4 51.1 49.4 To: 38.1 40.2 47.9 46.3 51.3 52.7 43.2 44.1 48.8 54.5 57.7 58.0 54.3 51.6 49.1 Day 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 52.5 58.9 63.3 65.6 64.7 63.3 63.6 59.4 63.9 68.6 69.4 68.3 63.1 66.7 70.6 To: 53.2 58.5 62.5 65.2 64.3 63.2 64.5 59.0 62.3 69.1 68.8 67.7 62.7 66.8 70.5 Avg Press Day 1 9 19 25 From: 681.7 672.2 671.9 663.2 To: 682.3 675.1 674.9 675.9 Number of NCDC observations per day: 24