***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1965 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 53.9 56.7 55.0 T 360 20.5 27 350 0.0 8 671.2 IF+, BS 02 44.8 53.9 49.6 0 360 18.5 25 360 0.0 8 666.1 IF+, BS 03 45.0 57.2 50.3 0 330 17.8 23 330 0.0 6 673.5 IF,BS 04 57.2 60.0 58.2 0 010 16.9 23 020 0.0 0 675.2 IF 05 57.2 61.7 59.8 0 020 18.2 24 020 0.0 0 670.1 IF 06 61.1 62.8 61.7 0 010 18.7 24 010 0.0 4 664.3 IF 07 60.0 62.2 60.6 0 360 16.6 24 360 0.0 6 670.1 IF 08 58.9 60.6 59.4 0 010 18.5 25 010 0.0 7 672.7 IF,BS 09 58.9 68.9 66.1 0 080 13.3 17 040 0.0 0 672.4 10 58.9 67.2 62.4 0 010 18.6 25 010 0.0 1 672.3 BS 11 50.0 58.9 52.4 0 360 22.6 27 360 0.0 5 673.8 BS 12 49.7 62.8 56.6 T 010 15.6 21 360 0.0 5 675.1 IF,BS 13 32.8 50.6 44.5 T 360 10.6 23 210 0.0 6 684.7 IF 14 31.4 44.4 38.2 T 210 7.4 15 190 0.0 6 686.7 IF 15 37.8 54.4 48.5 T 090 13.1 23 110 0.0 2 678.1 16 47.2 62.2 57.1 0 080 18.2 29 100 0.0 2 666.2 IF,BS 17 60.6 66.1 63.6 0 060 11.9 18 060 0.0 2 674.4 18 51.4 61.7 55.3 T 030 12.3 18 360 0.0 2 677.4 19 53.3 61.1 58.7 T 030 11.6 17 020 0.0 0 673.7 20 55.6 58.3 57.2 T 030 16.1 23 020 0.0 0 684.1 21 53.3 61.7 58.1 0 100 15.2 22 010 0.0 0 690.6 22 62.2 66.1 65.2 0 090 13.8 18 080 0.0 0 683.0 23 59.4 65.0 62.5 0 070 12.0 16 090 0.0 0 684.7 24 57.2 61.7 59.0 0 090 10.0 21 100 0.0 0 691.8 25 56.7 60.0 58.2 0 090 14.6 23 090 0.0 0 685.9 26 56.7 60.6 59.3 0 090 15.2 22 040 0.0 0 687.7 27 59.4 64.4 61.6 0 080 10.1 21 100 0.0 0 690.0 28 61.1 65.0 62.2 0 100 14.8 21 090 0.0 0 688.5 29 61.1 65.0 62.8 0 090 14.5 21 090 0.0 0 685.5 30 59.4 65.6 62.4 0 070 11.0 20 080 0.0 0 684.5 AVG 53.7 60.9 57.6 T 090 14.9 29 100 0.0 2 678.5 16th AVG MONTHLY -57.6 PCPN TRACE NR DAYS CLEAR 20 HIGHEST -31.4 ON 14th SUNSHINE 0.0/ 0% PARTLY CLOUDY 07 LOWEST -68.9 ON 9th CLOUDY 03 HIGH PRESSURE 693.2 ON 24th LOW PRESSURE 663.4 ON 6th 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 converted from inches of Hg to millibars. Prevailing wind direction taken from NCDC data. No data on original LCD. All wind and pressure data taken from original LCD unless otherwise indicated. Changed Extremes: From To Max T -31.7 -31.4 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 53.8 53.7 Avg Wnd Spd Avg Press Min T Max Press 693.0 693.2 Fastest Wnd MPH Avg T 57.5 57.6 Min Press Changes to Daily Data: Max Temp Day 2 12 14 18 From: 45.0 50.0 31.7 51.7 To: 44.8 49.7 31.4 51.4 Min Temp Day 13 From: 50.0 To: 50.6 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 55.6 49.4 51.1 58.9 59.4 62.2 61.1 60.0 63.9 63.3 54.4 56.7 41.7 38.3 46.1 To: 55.0 49.6 50.3 58.2 59.8 61.7 60.6 59.4 66.1 62.4 52.4 56.6 44.5 38.2 48.5 Day 16 17 18 19 21 22 23 24 25 26 27 28 29 30 From: 55.0 63.3 56.7 57.2 57.8 64.4 62.2 59.4 58.3 58.9 62.2 63.3 63.3 62.8 To: 57.1 63.6 55.3 58.7 58.1 65.2 62.5 59.0 58.2 59.3 61.6 62.2 62.8 62.4 Avg MPH Day 9 10 27 28 From: 12.2 17.6 11.1 13.3 To: 13.3 18.6 10.1 14.8 Number of NCDC observations per day: 8