***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1976 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 47.5 59.0 52.5 M 010 22.1 30 020 M 8 668.0 2 48.0 55.0 50.4 M 020 26.1 37 020 M 8 662.7 3 48.0 68.6 59.6 M 010 13.3 39 020 M 5 660.0 4 47.5 69.0 58.9 M 160 6.0 19 020 M 4 671.2 5 41.4 64.0 48.9 M 150 10.1 15 160 M 6 675.4 6 47.0 57.5 51.8 M 140 9.7 18 140 M 4 672.7 7 47.0 64.2 61.5 M 120 7.5 15 140 M 2 667.0 8 60.0 65.0 61.4 M 360 11.8 15 360 M 3 670.1 9 58.6 63.0 60.1 M 010 13.3 23 360 M 3 675.3 10 56.4 61.0 57.4 M 030 15.5 18 030 M 3 680.8 11 54.0 59.0 56.3 M 020 18.4 29 020 M 3 682.8 12 55.0 64.0 61.4 M 050 11.1 25 020 M 1 682.3 13 58.0 64.0 61.0 M 060 12.1 18 040 M 1 677.4 14 59.0 68.6 65.4 M 090 8.3 18 060 M 0 675.4 15 52.5 69.0 62.4 M 060 7.5 14 130 M 4 680.7 16 47.5 68.0 50.8 M 010 6.0 12 360 M 7 684.0 17 48.0 62.5 60.1 M 080 8.6 18 030 M 1 681.8 18 59.0 67.5 66.2 M 100 9.8 17 080 M 0 678.2 19 66.0 69.0 67.9 M 120 9.5 15 100 M 0 678.6 20 67.0 69.7 69.0 M 120 11.8 18 120 M 0 675.3 21 63.1 71.2 66.8 M 130 6.3 15 110 M 1 674.0 22 60.8 69.0 62.5 M 070 9.2 12 070 M 4 671.9 23 61.0 66.4 64.6 M 050 8.1 14 070 M 2 670.7 24 53.6 67.0 60.0 M 120 6.9 13 070 M 3 672.7 25 54.0 65.3 63.5 M 110 8.9 15 090 M 1 668.9 26 63.0 69.0 67.9 M 070 12.7 17 090 M 0 666.2 27 56.4 69.0 60.6 M 030 21.4 27 030 M 2 671.8 28 49.2 64.0 51.8 M 010 17.3 30 020 M 3 676.5 29 49.0 55.9 51.8 M 040 13.3 22 010 M 3 683.0 30 49.0 60.0 58.9 M 070 10.8 23 030 M 0 685.5 AVG 54.2 64.8 59.7 M 010 11.8 39 020 M 3 674.7 3rd AVG MONTHLY -59.7 PCPN M NR DAYS CLEAR 14 HIGHEST -41.4 ON 5th SUNSHINE M PARTLY CLOUDY 13 LOWEST -71.2 ON 21st CLOUDY 03 HIGH PRESSURE 686.1 ON 30th LOW PRESSURE 658.7 ON 2nd NET CHANGE IN SNOWSTAKE FIELD: 9.99 SNOWSTAKE DATA NOT AVAILABLE. 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 Monthly Averages: (All temps are Minus C) From To From To From To Max T 56.3 54.2 Avg Wnd Spd 11.9 11.8 Avg Press Min T 63.8 64.8 Max Press 686.0 686.1 Fastest Wnd MPH Avg T 60.0 59.7 Min Press 658.8 658.7 Changes to Daily Data: Max Temp Day 1 4 9 10 15 16 21 22 24 27 28 From: 55.0 55.0 60.0 58.0 65.0 52.0 68.0 61.0 65.0 63.0 53.0 To: 47.5 47.5 58.6 56.4 52.5 47.5 63.1 60.8 53.6 56.4 49.2 Min Temp Day 3 6 7 14 17 18 20 23 25 29 From: 55.0 53.0 62.0 65.0 61.0 66.0 69.0 65.0 65.0 54.0 To: 68.6 57.5 64.2 68.6 62.5 67.5 69.7 66.4 65.3 55.9 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 57.0 51.5 51.5 62.0 52.7 50.0 54.5 62.5 61.5 59.5 56.5 59.5 61.0 62.0 67.0 60.0 To: 52.5 50.4 59.6 58.9 48.9 51.8 61.5 61.4 60.1 57.4 56.3 61.4 61.0 65.4 62.4 50.9 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 54.5 62.5 67.5 68.0 69.6 65.0 63.0 66.0 59.5 66.0 66.0 58.5 51.5 54.5 To: 60.1 66.2 67.9 69.0 66.8 62.5 64.6 60.0 63.5 67.9 60.6 51.8 51.8 58.9 Number of NCDC observations per day: 4