***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1978 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 41.1 50.1 43.3 0 020 26.2 33 030 0.0 8 683.5 BS 2 39.2 44.0 41.5 0 020 27.3 38 020 0.0 8 684.9 BS 3 40.4 46.7 43.7 0 020 27.1 37 020 0.0 7 683.6 BS 4 41.0 56.7 52.5 0 030 22.1 38 360 0.0 2 683.5 BS 5 51.7 56.7 54.4 0 050 19.0 32 040 0.0 0 677.7 BS 6 52.1 58.5 56.1 0 040 16.7 28 040 0.0 5 677.7 BS 7 54.0 61.7 58.2 T 070 8.3 23 030 0.0 3 674.6 BS 8 54.9 65.0 62.8 T 050 10.1 13 080 0.0 2 673.2 9 52.8 64.2 57.1 T 010 18.7 26 020 0.0 6 677.2 BS 10 42.2 59.7 43.7 0 360 24.7 40 350 0.0 8 681.3 11 40.7 55.6 50.7 T 340 12.3 36 350 0.0 3 683.0 BS 12 47.2 56.5 50.5 T 020 14.4 21 360 0.0 7 688.9 IF 13 38.3 51.9 40.5 T 330 17.3 25 360 0.0 8 689.3 BS 14 37.0 43.0 40.6 T 180 9.5 23 350 0.0 6 688.9 BS 15 39.2 42.5 41.9 T 330 6.7 13 360 0.0 8 688.7 16 41.0 57.8 52.8 T 100 6.0 14 330 0.0 4 693.7 IF 17 45.9 58.1 51.8 T 150 7.8 13 090 0.0 5 701.5 IF 18 44.8 55.8 49.9 T 120 15.3 18 130 0.0 3 700.4 19 43.8 63.3 57.7 0 120 15.3 24 130 0.0 0 691.8 20 46.1 63.6 52.5 0 060 14.4 24 060 0.0 4 685.1 BS 21 44.5 59.7 56.2 T 360 9.7 30 040 0.0 2 678.3 IF,BS 22 46.1 59.0 52.9 T 010 16.7 20 010 0.0 5 681.8 23 37.2 59.3 39.4 T 310 19.6 28 350 0.0 8 688.1 BS 24 36.5 42.8 40.6 0 010 15.8 30 310 0.0 8 687.2 BS 25 39.0 46.7 44.6 0 020 18.7 22 340 0.0 8 689.7 BS 26 43.4 57.2 53.9 T 090 12.0 25 030 0.0 0 684.0 BS 27 51.0 57.2 54.4 T 050 14.7 20 070 0.0 2 681.6 BS 28 52.6 58.3 57.3 T 060 12.0 21 050 0.0 2 683.3 BS 29 56.0 61.1 60.3 T 080 10.3 14 060 0.0 0 682.0 BS 30 59.4 63.3 61.5 T 090 10.3 14 100 0.0 0 678.6 AVG 45.3 55.9 50.8 T 020 15.3 40 350 0.0 4 684.8 10th AVG MONTHLY -50.8 PCPN TRACE NR DAYS CLEAR 10 HIGHEST -36.5 ON 24th SUNSHINE 0.0/ 0% PARTLY CLOUDY 10 LOWEST -65.0 ON 8th CLOUDY 10 HIGH PRESSURE 702.7 ON 18th LOW PRESSURE 672.5 ON 8th NET CHANGE IN SNOWSTAKE FIELD: +2.24 inches SUNSHINE 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 Extremes: From To Max T Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 46.4 45.3 Avg Wnd Spd 15.0 15.3 Avg Press Min T 54.7 55.9 Max Press 702.6 702.7 Fastest Wnd MPH Avg T 50.6 50.8 Min Press Changes to Daily Data: Max Temp Day 1 9 10 12 13 20 22 23 30 From: 44.1 59.6 43.7 50.2 41.4 53.1 52.5 40.2 59.5 To: 41.1 52.8 42.2 47.2 38.3 46.1 46.1 37.2 59.4 Min Temp Day 3 4 5 7 11 16 19 24 25 26 27 30 From: 45.6 52.9 56.5 56.6 52.4 50.9 55.5 40.2 45.0 54.6 57.0 63.1 To: 46.7 56.7 56.7 61.7 55.6 57.8 63.3 42.8 46.7 57.2 57.2 63.3 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 47.1 41.6 43.0 47.0 54.1 55.3 55.3 60.0 61.9 51.7 46.6 53.4 46.7 40.0 40.9 46.0 To: 43.3 41.5 43.7 52.5 54.4 56.1 58.2 62.8 57.1 43.7 50.7 50.5 40.5 40.6 41.9 52.8 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 52.0 50.3 49.7 58.3 52.1 55.8 49.8 38.4 42.0 49.0 54.0 55.5 58.5 61.3 To: 51.8 49.9 57.7 52.5 56.2 52.9 39.4 40.6 44.6 53.9 54.4 57.3 60.3 61.5 Number of NCDC observations per day: 4