***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1974 MONTH DECEMBER .... 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 23.1 29.4 24.5 0 020 20.0 26 020 10.9 7 697.3 BS 2 22.2 28.3 26.8 0 020 20.7 36 360 7.3 4 696.5 BS 3 27.2 29.4 29.0 0 010 12.8 22 020 24.0 4 696.3 BS 4 28.1 30.9 29.6 T 350 5.3 14 010 19.8 7 701.9 IC 5 28.1 31.7 28.6 T 050 9.3 13 330 6.7 5 704.6 SG,IF 6 27.0 29.4 28.0 0 030 12.4 15 030 23.7 1 701.0 7 26.1 28.3 26.8 T 020 11.9 18 010 24.0 2 698.9 IC,IF 8 22.0 27.2 24.1 0 030 13.7 17 020 21.7 5 698.9 IF 9 21.7 25.3 23.0 T 350 5.9 17 010 0.0 8 700.8 SG,BS,IF 10 22.0 26.1 24.5 T 030 7.4 9 070 4.8 6 702.9 SG,IF 11 20.9 25.6 22.6 0 030 5.5 12 040 11.5 6 702.9 IF 12 21.1 25.0 23.6 T 140 8.2 11 110 19.7 1 693.8 SC,IF 13 22.2 25.0 23.1 0 350 8.5 15 030 17.8 2 691.6 14 21.4 28.3 22.0 T 020 3.7 9 030 14.0 6 694.0 SG,IF 15 21.7 23.3 22.8 T 020 6.7 9 020 0.0 8 691.3 SG,IF 16 22.6 25.0 23.5 T 340 9.6 14 360 0.0 7 688.3 SG,IF 17 20.9 25.0 22.7 T 350 7.5 14 020 3.4 7 691.1 IC,IF,SG 18 19.2 24.4 22.0 0 310 5.7 13 090 14.7 5 689.3 19 19.4 23.9 20.7 0 120 9.6 13 360 14.5 3 683.0 20 18.7 23.9 21.5 0 120 5.9 8 140 23.5 0 681.8 21 19.8 25.0 21.6 0 340 6.3 9 360 22.2 2 681.4 22 21.1 26.4 25.0 T 030 3.0 7 040 12.0 4 682.7 IC,SG,IF 23 20.3 26.7 22.5 0 130 3.0 6 360 23.8 3 687.8 24 18.1 23.9 19.3 0 340 6.3 9 360 10.3 7 692.8 25 17.6 20.6 19.2 0 010 4.8 6 020 15.5 6 693.3 26 17.7 22.8 20.4 0 100 6.9 8 110 21.0 5 693.5 IF 27 18.9 24.2 23.8 0 100 9.2 11 090 19.7 0 694.4 28 23.1 25.0 23.6 0 090 11.6 16 090 24.0 0 692.7 29 22.0 24.4 22.7 0 040 16.9 23 040 18.0 6 692.5 IF 30 21.4 24.4 22.6 0 030 15.1 17 030 16.6 6 697.4 IF 31 21.7 23.3 22.6 0 010 13.2 23 030 10.3 5 697.2 IF AVG 21.8 25.9 23.6 T 030 9.3 36 360 14.7 4 693.9 2nd AVG MONTHLY -23.6 PCPN TRACE NR DAYS CLEAR 10 HIGHEST -17.6 ON 25th SUNSHINE 455.4/61.2% PARTLY CLOUDY 15 LOWEST -31.7 ON 5th CLOUDY 06 HIGH PRESSURE 705.7 ON 5th LOW PRESSURE 681.3 ON 21st NET CHANGE IN SNOWSTAKE FIELD: 9.99 SNOWSTAKE 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 -17.7 -17.6 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 22.3 21.8 Avg Wnd Spd 9.4 9.3 Avg Press 693.8 693.9 Min T 25.8 25.9 Max Press 705.6 705.7 Fastest Wnd MPH Avg T 24.1 23.6 Min Press Changes to Daily Data: Max Temp Day 1 4 5 6 8 10 11 14 16 17 18 20 21 23 24 25 From: 23.9 28.9 28.3 28.3 25.0 22.2 21.1 22.2 22.8 21.7 19.4 18.9 20.0 22.8 20.0 17.7 To: 23.1 28.1 28.1 27.0 22.0 22.0 20.9 21.4 22.6 20.9 19.2 18.7 19.8 20.3 18.1 17.6 Day 28 29 30 From: 23.9 22.2 22.2 To: 23.1 22.0 21.4 Min Temp Day 2 4 9 22 27 From: 27.2 30.6 25.0 25.6 23.9 To: 28.3 30.9 25.3 26.4 24.2 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 26.7 24.7 28.3 29.7 30.0 28.9 27.2 26.1 23.3 24.2 23.3 23.1 23.6 25.3 22.5 23.9 To: 24.5 26.8 29.0 29.6 28.6 28.0 26.8 24.1 23.0 24.5 22.6 23.6 23.1 22.0 22.8 23.5 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 23.3 21.9 21.7 21.4 22.5 23.3 24.7 21.9 19.2 20.3 21.4 24.4 23.3 23.3 22.5 To: 22.7 22.0 20.7 21.5 21.6 25.0 22.5 19.3 19.2 20.4 23.8 23.6 22.7 22.6 22.6 Number of NCDC observations per day: 8