***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1971 MONTH SEPTEMBER .... 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 51.7 68.1 61.7 T 030 14.7 20 050 0.0 2 671.7 IC 2 60.6 68.3 65.1 T 100 14.1 18 110 0.0 1 671.4 IC.IF 3 61.1 66.1 62.4 0 100 15.0 17 080 0.0 0 675.9 IF 4 61.1 65.0 63.7 0 100 14.4 18 070 0.0 2 677.8 IF 5 62.2 68.1 64.9 0 100 13.6 16 100 0.0 1 669.6 IF 6 60.3 68.9 63.5 0 040 16.7 19 060 0.0 1 668.7 IF 7 60.0 67.2 63.5 0 030 11.2 22 020 0.0 2 664.9 IF 8 61.1 68.3 67.4 T 060 12.4 16 060 0.0 4 664.9 IC,IF 9 65.3 70.6 67.6 T 060 10.3 16 060 0.0 5 667.2 IC 10 65.6 71.4 69.6 T 080 11.5 17 070 0.0 2 663.9 IC,IF 11 65.3 71.7 66.8 0 120 17.3 23 120 0.0 0 655.7 IF,BS 12 65.0 72.5 69.3 0 100 15.0 18 100 0.0 1 660.5 IF 13 67.8 75.0 73.5 0 050 12.1 18 050 0.0 0 670.1 IF 14 72.2 75.0 73.5 0 120 13.0 16 120 0.0 1 670.6 IF 15 62.5 75.6 68.7 0 100 10.7 16 130 0.0 5 674.9 IF 16 62.2 71.7 66.5 0 020 6.8 15 050 0.0 5 682.2 17 54.7 68.9 58.3 0 060 8.3 14 060 0.0 6 682.1 IF 18 53.6 59.4 56.0 0 010 15.8 21 020 0.0 7 681.5 IF 19 56.1 68.6 65.6 0 030 11.5 21 020 0.0 5 679.1 IF 20 64.2 70.6 67.5 0 100 11.2 16 070 0.0 4 680.2 IF 21 63.6 69.4 65.8 0 120 11.0 14 130 0.0 2 680.2 IF 22 65.0 71.7 68.5 0 110 13.5 16 120 0.0 2 687.2 IF 23 55.3 70.6 58.6 0 040 13.8 18 040 0.0 6 692.9 IF 24 55.0 60.0 56.6 0 040 13.8 18 030 0.0 4 693.4 IF 25 51.1 59.4 54.5 0 030 19.0 22 030 0.0 0 692.8 IF,BS 26 37.5 58.3 43.7 0 050 16.1 22 030 0.0 8 687.9 IF,BS 27 34.2 41.1 38.4 0.04 030 18.5 23 020 0.0 8 689.8 SN,IF,DS 28 34.4 55.9 51.6 0.02 010 16.4 23 360 0.0 5 692.2 SN,IF,DS 29 43.6 57.2 51.5 T 060 16.7 25 020 3.5 3 683.3 IC,IF 30 40.9 55.0 43.1 T 020 19.6 28 020 0.0 8 685.2 IC,IF,BS AVG 57.1 66.3 61.6 T 100 13.8 28 020 0.4 3 677.2 30th AVG MONTHLY -61.6 PCPN 0.06 inches NR DAYS CLEAR 15 HIGHEST -34.2 ON 27th SUNSHINE 3.5/ 2% PARTLY CLOUDY 11 LOWEST -75.6 ON 15th CLOUDY 04 HIGH PRESSURE 694.9 ON 25th LOW PRESSURE 652.0 ON 12th NET CHANGE IN SNOWSTAKE FIELD: M SNOWSTAKE DATA NOT AVAILABLE. Sunrise occurred at 1335UTC on day 21. Sunrise based on US Naval Observatory time. 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 -34.4 -34.2 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 58.5 57.1 Avg Wnd Spd Avg Press 676.9 677.2 Min T 65.6 66.3 Max Press Fastest Wnd MPH Avg T 62.0 61.6 Min Press Changes to Daily Data: Max Temp Day 6 9 11 15 17 18 20 21 23 26 27 29 30 From: 62.8 66.7 66.7 70.0 59.4 53.9 65.6 63.9 58.9 47.2 36.1 50.0 41.1 To: 60.3 65.3 65.3 62.5 54.7 53.6 64.2 63.6 55.3 37.5 34.2 43.6 40.9 Min Temp Day 1 5 10 12 19 28 From: 60.6 65.0 71.1 68.9 66.1 51.1 To: 68.1 68.1 71.4 72.5 68.6 55.9 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 56.1 64.4 63.6 63.1 63.6 65.8 63.6 64.7 68.6 68.3 69.2 66.9 71.4 73.6 72.8 66.9 To: 61.7 65.1 62.4 63.7 64.9 63.5 63.5 67.4 67.6 69.6 66.8 69.3 73.5 73.5 68.7 66.5 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 64.2 56.7 61.1 68.1 66.7 68.3 64.7 57.5 55.3 52.8 38.6 42.8 53.6 48.1 To: 58.3 56.0 65.6 67.5 65.8 68.5 58.6 56.6 54.5 43.7 38.4 51.6 51.5 43.1 Number of NCDC observations per day: 4