***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1970 MONTH APRIL .... ALL TEMPERATURES MINUS C.... DAY TEMPERATURE C PCPN AVG WIND FASTEST SUN SKY STN WX MAX MIN AVG SPEED MILE SHINE COVER PRESS DIR MPH SPD DIR HRS 1 53.3 66.1 63.5 0 130 16.7 27 130 M 2 669.7 IF,BS 2 62.2 67.8 67.2 0 110 7.8 25 120 M 1 674.7 IF 3 62.2 68.3 65.1 T 070 8.6 14 070 M 1 682.9 SG 4 57.2 66.7 59.4 0 130 9.7 14 080 M 3 683.5 5 58.9 65.0 63.3 0 110 13.0 18 100 M 2 680.8 6 53.9 65.0 55.5 0 110 22.1 26 040 M 2 676.0 BS 7 52.2 55.6 53.7 0 040 23.3 31 050 M 4 675.3 BS 8 43.6 55.6 46.7 0 030 24.8 30 020 M 7 675.8 BS 9 43.3 50.3 48.1 0 020 23.9 33 010 M 8 680.0 BS 10 47.8 52.2 49.9 0 020 13.0 25 020 M 6 683.7 BS 11 47.5 53.9 50.5 0 050 12.4 16 020 M 6 680.5 12 48.3 60.0 57.4 0 060 12.4 20 040 M 3 682.6 13 48.6 60.0 51.3 0 020 15.8 23 010 M 8 681.8 IF 14 48.9 61.7 58.0 0 030 10.6 23 010 M 3 681.2 IF 15 57.8 65.0 62.6 0 130 12.6 16 120 M 0 681.1 16 62.2 67.2 66.5 0 110 9.8 17 120 M 0 680.9 17 60.0 67.8 63.3 0 080 16.1 19 060 M 0 685.7 IF 18 54.4 64.4 57.9 0 040 13.9 20 030 M 4 688.8 IF,BS 19 51.4 61.7 52.0 0 030 16.4 19 020 M 5 687.9 IF 20 51.7 60.6 58.1 0 010 12.6 21 010 M 3 689.2 IF 21 55.6 65.6 62.5 0 050 11.5 14 040 M 2 686.7 22 61.7 67.2 65.8 0 130 13.3 18 130 M 0 683.6 23 64.4 66.7 65.3 0 130 21.8 32 130 M 0 676.9 IF,BS 24 63.9 65.6 65.6 0 120 17.8 26 120 M 0 675.7 IF,BS 25 63.3 65.6 64.6 0 120 17.0 22 110 M 0 678.5 BS 26 62.8 66.7 64.9 0 120 15.5 22 120 M 0 682.3 27 60.6 66.7 62.8 0 130 12.9 23 140 M 3 678.3 IF 28 60.6 65.0 62.4 0 110 13.5 21 130 M 4 671.2 IF 29 60.6 68.9 66.1 0 120 15.6 22 110 M 0 663.9 IF 30 63.9 69.4 66.0 0 030 18.4 23 030 M 3 663.9 BS AVG 56.1 63.4 59.9 T 130 15.1 33 010 M 3 679.4 9th AVG MONTHLY -59.9 PCPN TRACE NR DAYS CLEAR 16 HIGHEST -43.3 ON 9th SUNSHINE M PARTLY CLOUDY 10 LOWEST -69.4 ON 30th CLOUDY 04 HIGH PRESSURE 689.6 ON 21st LOW PRESSURE 661.4 ON 29th NET CHANGE IN SNOWSTAKE FIELD: 9.99 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 Average Sky Cover changed to reflect data from 00Z through 00Z daily. All Sky Cover changed to Octas. Peak wind speed, peak wind direction, precipitation, sunshine amount, and present wx reported in NZST. Insufficient data to convert these values to UTC. All temperature, wind, and pressure data taken from NCDC data. LCD data originally reported in NZST. Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 56.9 56.1 Avg Wnd Spd Avg Press 679.5 679.4 Min T 62.7 63.4 Max Press Fastest Wnd MPH Avg T 59.8 59.9 Min Press 661.7 661.4 Changes to Daily Data: Max Temp Day 3 8 11 13 17 18 19 26 28 From: 66.1 51.1 47.8 48.9 64.4 58.3 52.2 63.9 63.9 To: 62.2 43.6 47.5 48.6 60.0 54.4 51.4 62.8 60.6 Min Temp Day 1 7 9 11 14 15 20 21 29 From: 62.2 55.0 47.8 51.7 57.8 62.2 60.0 62.8 67.8 To: 66.1 55.6 50.3 53.9 61.7 65.0 60.6 65.6 68.9 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 57.8 65.0 67.2 61.9 61.9 59.4 53.6 53.3 45.6 50.0 49.7 54.2 54.4 53.3 60.0 64.7 To: 63.5 67.2 65.1 59.4 63.3 55.5 53.7 46.7 48.1 49.9 50.5 57.4 51.3 58.0 62.6 66.5 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 66.1 61.4 56.9 55.8 59.2 64.4 65.6 64.7 64.4 65.3 63.6 64.4 64.2 66.7 To: 63.3 57.9 52.0 58.1 62.5 65.8 65.3 65.6 64.6 64.9 62.8 62.4 66.1 66.0 Number of NCDC observations per day: 4