***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1972 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 60.6 63.3 62.2 0 110 12.7 15 100 0.0 2 682.3 2 61.7 67.0 64.3 0 060 10.4 16 060 0.0 1 682.2 3 63.3 67.8 66.5 0 110 10.8 13 110 0.0 1 684.9 4 65.6 68.9 67.4 0 110 12.4 15 110 0.0 1 683.6 5 66.7 68.3 67.6 0 110 9.5 16 110 0.0 0 682.7 IF 6 62.8 68.3 65.0 0 120 12.6 16 120 0.0 2 678.7 7 65.0 69.7 67.9 0 120 13.3 15 130 0.0 0 674.2 IF 8 55.3 70.0 59.7 0 040 19.5 22 040 0.0 4 672.0 IF 9 55.6 62.2 60.2 0 040 15.5 28 030 0.0 1 673.1 IF,BS 10 35.9 63.9 48.1 0 030 15.5 21 020 0.0 6 679.9 IF,BS 11 35.0 57.8 39.0 0 270 11.8 24 270 0.0 8 689.9 IF,BS 12 38.3 49.7 46.8 0 010 18.4 25 250 0.0 7 690.9 SG,IF,BS 13 46.1 54.7 49.9 T 020 23.0 29 020 0.0 4 683.1 SG,IF,BS 14 47.8 57.2 56.3 T 030 16.4 29 020 0.0 3 681.4 SG,IF,BS 15 56.1 63.1 61.7 0 050 13.0 23 040 0.0 2 684.2 BS 16 61.7 63.9 63.1 0 110 15.3 16 090 0.0 2 684.4 17 61.1 63.9 62.4 0 110 14.1 18 120 0.0 0 682.1 IF 18 60.3 63.9 61.1 0 110 15.8 17 110 0.0 2 684.1 IF 19 54.2 62.2 57.0 0 040 18.7 21 050 0.0 1 684.6 20 46.7 59.4 48.5 0 050 22.1 31 040 0.0 1 683.6 BS 21 47.2 50.3 49.6 0 040 20.7 31 040 0.0 1 689.8 BS 22 47.8 55.6 54.0 0 050 19.2 28 030 0.0 1 688.9 BS 23 52.8 59.7 57.1 0 040 14.4 24 050 0.0 1 687.3 BS 24 53.6 61.7 57.6 0 080 15.0 20 090 0.0 0 683.5 25 53.3 60.0 57.2 0 060 16.1 21 050 0.0 0 679.7 IF 26 55.3 62.2 58.1 0 040 14.9 17 050 0.0 2 683.3 IF 27 54.4 59.4 56.6 0 040 16.1 21 030 0.0 4 687.7 28 54.2 58.9 56.4 0 030 15.3 21 020 0.0 3 689.4 29 45.3 58.3 50.2 0 060 15.8 23 080 0.0 6 679.7 30 45.6 53.1 48.6 T 030 16.7 21 030 0.0 6 679.1 SG AVG 53.6 61.5 57.3 T 040 15.5 31 040 0.0 2 683.0 20th,21th AVG MONTHLY -57.3 PCPN TRACE NR DAYS CLEAR 20 HIGHEST -35.0 ON 11th SUNSHINE 0.0/ 0% PARTLY CLOUDY 08 LOWEST -70.0 ON 8th CLOUDY 02 HIGH PRESSURE 692.2 ON 12th LOW PRESSURE 670.8 ON 9th NET CHANGE IN SNOWSTAKE FIELD: +0.41 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 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 55.0 53.6 Avg Wnd Spd 15.7 15.5 Avg Press 683.5 683.0 Min T 60.8 61.5 Max Press Fastest Wnd MPH Avg T 57.9 57.3 Min Press Changes to Daily Data: Max Temp Day 8 10 18 19 24 26 28 29 From: 61.7 52.8 60.6 57.8 55.0 57.8 55.6 52.8 To: 55.3 35.9 60.3 54.2 53.6 55.3 54.2 45.3 Min Temp Day 2 7 12 13 15 21 23 30 From: 64.4 67.8 46.1 49.4 61.7 50.0 56.7 51.7 To: 67.0 69.7 49.7 54.7 63.1 50.3 59.7 53.1 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 61.9 63.1 65.6 67.2 67.5 65.6 66.4 65.8 58.9 58.3 46.4 42.2 47.8 52.5 58.9 62.8 To: 62.2 64.3 66.5 67.4 67.6 65.0 67.9 59.7 60.2 48.1 39.0 46.8 49.9 56.3 61.7 63.1 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 62.5 62.2 60.0 53.1 48.6 51.7 54.7 58.3 56.7 60.0 56.9 57.2 55.6 48.6 To: 62.4 61.1 57.0 48.5 49.6 54.0 57.1 57.6 57.2 58.1 56.6 56.4 50.2 48.6 Number of NCDC observations per day: 4