***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1975 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 68.6 75.0 71.3 0 050 8.6 12 090 0.0 0 663.4 2 67.8 73.9 72.4 0 060 8.1 12 040 0.0 1 666.4 3 59.7 73.9 66.0 0 070 6.9 13 080 0.0 3 670.8 4 53.1 70.0 57.2 0 350 20.4 24 360 0.0 6 673.2 BS 5 48.9 60.0 50.8 0 340 18.7 24 360 0.0 7 680.7 BS 6 48.9 55.0 53.9 0 360 20.7 24 360 0.0 4 683.9 BS 7 51.4 55.0 51.8 0 360 21.6 26 360 0.0 6 684.1 BS 8 51.1 54.7 53.6 0 020 12.4 27 360 0.0 6 683.6 BS 9 40.9 56.1 47.1 0 350 21.6 24 360 0.0 7 677.6 BS 10 38.6 48.9 41.9 0 320 14.1 28 340 0.0 5 670.4 BS 11 39.4 58.1 50.8 0 310 5.8 20 320 0.0 6 668.8 12 44.4 58.9 53.3 0 010 10.1 15 360 0.0 4 665.9 13 52.2 62.0 59.9 0 080 10.0 13 360 0.0 3 663.7 14 58.3 67.5 65.4 0 070 7.8 13 090 0.0 2 667.4 15 57.0 69.4 61.1 0 070 2.6 9 070 0.0 6 676.5 16 53.6 63.1 58.8 0 100 4.9 8 360 0.0 6 680.2 17 53.9 65.6 63.7 0 090 10.1 13 090 0.0 0 677.2 18 58.1 66.1 59.4 0 030 15.3 21 020 0.0 4 672.9 BS,IF 19 57.2 60.3 58.9 0 040 12.4 29 020 0.0 4 674.8 BS 20 58.3 62.2 59.4 0 030 13.2 16 040 0.0 4 676.1 21 59.4 68.6 65.6 0 050 6.4 16 030 0.0 2 674.3 22 65.6 69.4 68.2 0 060 8.3 10 080 M 2 670.6 23 59.7 69.4 63.6 0 060 4.9 10 070 M 5 672.8 24 58.9 66.4 63.3 T 020 5.5 10 020 M 8 676.4 SG 25 60.0 68.9 67.5 0 080 8.6 10 070 M 1 675.0 26 60.3 70.0 66.0 0 020 6.6 12 060 M 2 673.3 27 49.7 70.0 54.9 0 360 20.4 24 360 M 8 674.7 BS 28 47.8 61.4 53.3 0 350 10.9 24 360 M 8 671.7 BS 29 49.4 67.0 65.1 0 140 5.2 14 360 M 3 675.2 30 62.0 67.8 64.5 0 100 7.8 13 090 M 3 676.3 AVG 54.5 64.5 59.6 T 360 11.0 29 020 M 4 673.9 19th AVG MONTHLY -59.6 PCPN TRACE NR DAYS CLEAR 08 HIGHEST -38.6 ON 10th SUNSHINE M PARTLY CLOUDY 17 LOWEST -75.0 ON 1st CLOUDY 05 HIGH PRESSURE 685.1 ON 8th LOW PRESSURE 662.0 ON 1st NET CHANGE IN SNOWSTAKE FIELD: M SNOWSTAKE DATA NOT AVAILABLE. Sunrise occurred at 1243UTC on day 21. Sunrise based on US Naval Observatory. Insufficient Data available for Sunshine Hours Computation. 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 -38.9 -38.6 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 56.1 54.5 Avg Wnd Spd 10.9 11.0 Avg Press 673.7 673.9 Min T 63.8 64.5 Max Press Fastest Wnd MPH Avg T 59.9 59.6 Min Press 663.2 662.0 Changes to Daily Data: Max Temp Day 1 3 4 7 9 10 15 16 18 23 26 27 30 From: 72.2 66.7 60.0 51.7 48.9 38.9 60.6 53.9 58.3 65.6 66.7 55.0 62.2 To: 68.6 59.7 53.1 51.4 40.9 38.6 57.0 53.6 58.1 59.7 60.3 49.7 62.0 Min Temp Day 8 11 13 14 16 19 21 24 28 29 From: 53.9 51.7 60.0 66.7 61.7 60.0 66.7 65.0 57.8 65.0 To: 54.7 58.1 62.0 67.5 63.1 60.3 68.6 66.4 61.4 67.0 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 73.6 70.8 70.3 65.0 54.4 51.9 53.3 52.5 52.5 43.9 45.6 51.7 56.1 62.5 65.0 57.8 To: 71.3 72.4 66.0 57.2 50.8 53.9 51.8 53.6 47.1 41.9 50.8 53.3 59.9 65.4 61.1 58.8 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 59.7 62.2 58.6 60.3 63.1 67.5 67.5 61.9 64.4 68.3 62.5 52.8 57.2 65.0 To: 63.7 59.4 58.9 59.4 65.6 68.2 63.6 63.3 67.5 66.0 54.9 53.3 65.1 64.5 Number of NCDC observations per day: 4