***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1981 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 54.7 65.1 57.7 0 090 5.9 14 060 0.0 4 701.7 2 54.9 62.4 59.7 0 080 9.2 14 060 0.0 0 706.7 3 50.0 61.0 54.2 0 100 12.0 18 110 0.0 0 699.1 4 49.7 64.0 59.7 0 090 10.9 27 090 0.0 1 690.8 5 57.0 65.1 62.0 0 070 9.7 15 070 0.0 1 693.8 6 53.0 65.0 54.0 0 030 10.6 20 030 0.0 2 697.0 7 50.0 58.1 55.5 0 050 7.0 16 040 0.0 2 699.5 8 48.0 58.0 51.2 0 340 3.6 10 050 0.0 2 697.9 9 48.0 63.0 60.5 0 060 2.2 9 350 0.0 2 694.5 10 59.5 65.0 61.8 0 090 7.7 13 080 0.0 0 685.9 11 58.4 71.0 69.0 0 100 7.4 18 080 0.0 0 674.1 12 46.0 72.7 53.5 0 340 16.6 21 340 0.0 6 672.0 13 44.9 55.5 47.4 0 360 15.2 28 360 0.0 5 663.2 14 44.2 67.0 65.0 0 090 6.2 28 010 0.0 0 659.2 15 58.0 67.0 61.5 0 090 8.2 14 100 0.0 1 655.7 16 56.9 68.9 63.2 0 010 12.8 18 010 0.0 2 655.9 17 61.0 70.0 64.5 0 040 6.8 18 360 0.0 2 662.2 18 61.3 70.6 66.1 0 040 12.1 17 050 0.0 2 661.4 19 60.0 68.1 62.6 0 040 15.5 24 030 0.0 0 662.0 20 58.9 66.0 64.5 0 060 8.8 22 060 0.0 0 661.1 21 55.0 68.1 57.0 0 360 7.9 13 360 0.0 3 669.7 22 37.0 63.3 48.7 0 280 7.1 13 350 0.0 6 671.8 23 34.7 53.9 39.2 T 230 4.3 17 240 0.0 6 679.3 24 34.3 57.9 52.8 T 360 11.2 16 010 0.0 5 679.3 25 50.0 57.9 51.5 T 070 11.5 24 360 0.0 6 680.2 26 49.9 57.0 56.5 T 070 13.5 20 080 0.0 1 681.1 27 55.5 69.0 65.5 0 090 12.0 22 070 0.0 0 673.6 28 54.8 69.0 62.3 0 080 10.3 23 040 0.0 0 670.7 29 59.2 71.3 66.7 0 020 10.6 16 060 0.0 1 677.3 30 61.1 71.0 65.2 T 010 5.7 20 010 0.0 1 686.2 AVG 52.2 64.7 58.6 T 090 9.4 28 010 0.0 2 678.8 13th,14th AVG MONTHLY -58.6 PCPN TRACE NR DAYS CLEAR 22 HIGHEST -34.3 ON 24th SUNSHINE 0.0/ 0% PARTLY CLOUDY 08 LOWEST -72.7 ON 12th CLOUDY 00 HIGH PRESSURE 707.5 ON 3rd LOW PRESSURE 653.0 ON 16th NET CHANGE IN SNOWSTAKE FIELD: +1.30 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 53.8 52.2 Avg Wnd Spd 9.8 9.4 Avg Press 678.7 678.8 Min T 63.9 64.7 Max Press Fastest Wnd MPH Avg T 58.8 58.6 Min Press Changes to Daily Data: Max Temp Day 3 5 8 12 15 19 21 22 25 From: 55.1 58.5 52.1 55.5 62.7 63.4 57.0 53.5 50.1 To: 50.0 57.0 48.0 46.0 58.0 60.0 55.0 37.0 50.0 Min Temp Day 4 9 10 11 14 17 20 26 27 From: 58.5 62.5 63.6 68.4 66.3 63.7 64.8 56.7 62.0 To: 64.0 63.0 65.0 71.0 67.0 70.0 66.0 57.0 69.0 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 59.9 58.7 58.0 54.1 61.8 59.0 54.0 55.0 55.3 61.5 63.4 64.1 50.2 55.3 64.8 62.9 To: 57.7 59.7 54.2 59.7 62.0 54.0 55.5 51.2 60.5 61.8 69.0 53.5 47.4 65.0 61.5 63.2 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 62.4 65.9 65.8 61.9 62.5 58.4 44.3 46.1 54.0 53.3 58.8 61.9 65.3 66.1 To: 64.5 66.1 62.6 64.5 57.0 48.7 39.2 52.8 51.5 56.5 65.5 62.3 66.7 65.2 Number of NCDC observations per day: 4