***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1970 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 27.2 33.3 32.4 0 020 9.0 11 020 0.9 6 690.8 2 32.2 34.2 33.2 0 360 9.3 14 010 20.3 6 688.4 3 32.8 34.2 33.6 0 100 12.2 14 100 22.4 2 681.8 4 32.8 34.8 34.3 0 130 7.5 15 130 24.0 0 678.7 5 34.4 35.6 35.2 0 040 8.9 12 040 24.0 2 676.6 6 33.1 36.1 34.1 0 110 6.9 12 110 24.0 0 677.6 7 32.5 34.4 33.6 0 100 6.7 10 020 24.0 2 685.4 8 27.5 34.4 30.3 T 020 9.9 15 030 16.8 6 691.7 IC,IF 9 27.2 30.6 29.8 T 020 9.8 18 040 15.0 3 696.7 IC,IF 10 27.5 29.8 28.7 0 360 2.0 14 010 24.0 4 701.7 IC 11 27.2 30.6 29.8 0 120 10.1 16 120 24.0 2 698.3 12 28.7 30.6 28.9 0 120 12.9 22 120 24.0 0 691.9 13 28.7 29.4 29.1 0 120 10.6 15 120 24.0 0 691.9 14 28.1 29.4 28.2 0 120 8.5 14 120 24.0 0 694.9 15 28.3 29.4 28.8 0 100 6.9 9 100 24.0 2 691.2 16 27.0 29.4 28.3 0 020 10.2 14 010 20.4 5 692.9 17 26.1 29.4 27.3 T 330 11.6 18 320 6.7 7 699.9 IC,IF 18 22.6 28.9 24.7 T 030 10.7 16 020 7.0 7 697.6 IC,IF 19 22.0 28.3 23.4 T 010 12.5 21 010 7.9 7 697.2 IC,IF 20 19.8 24.4 20.7 T 010 8.3 18 360 0.0 8 702.2 IC,IF 21 20.0 24.2 23.0 T 330 8.2 16 330 24.0 5 704.6 SG,IC,IF 22 22.6 24.4 23.3 0 060 12.1 16 060 24.0 2 701.5 23 20.9 23.3 22.0 0 040 16.5 23 030 24.0 4 698.8 IF 24 20.9 22.8 21.7 0 030 17.1 23 010 23.0 5 694.4 IF,BS 25 21.1 23.7 23.1 T 030 12.1 24 010 24.0 0 693.4 BS,IC,IF 26 21.4 24.2 23.2 T 040 6.5 16 020 22.6 4 690.4 IC 27 20.9 24.4 21.8 T 030 10.2 16 030 15.0 6 688.8 IF 28 20.6 24.8 23.2 T 020 8.7 20 020 0.0 6 690.7 IF 29 22.8 26.1 24.8 T 030 4.8 9 340 16.3 5 693.1 IC,IF 30 21.4 25.6 23.6 T 060 5.3 9 010 17.7 6 695.5 IC,IF 31 21.7 26.1 24.5 T 030 8.8 14 010 17.0 4 698.5 IC,IF AVG 25.8 28.9 27.4 T 030 9.5 24 010 18.2 4 692.8 25th AVG MONTHLY -27.4 PCPN TRACE NR DAYS CLEAR 12 HIGHEST -19.8 ON 20th SUNSHINE 565.0/ 76% PARTLY CLOUDY 15 LOWEST -36.1 ON 6th CLOUDY 04 HIGH PRESSURE 705.7 ON 21st LOW PRESSURE 675.6 ON 6th NET CHANGE IN SNOWSTAKE FIELD: M 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 -20.0 -19.8 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 26.4 25.8 Avg Wnd Spd 9.2 9.5 Avg Press 692.6 692.8 Min T 28.8 28.9 Max Press 705.2 705.7 Fastest Wnd MPH Avg T 27.6 27.4 Min Press 675.9 675.6 Changes to Daily Data: Max Temp Day 6 7 8 10 12 13 14 16 18 19 20 22 23 24 26 27 From: 34.4 33.3 30.0 28.9 28.9 28.9 28.3 28.3 25.0 27.2 20.0 23.3 21.1 21.1 22.8 21.1 To: 33.1 32.5 27.5 27.5 28.7 28.7 28.1 27.0 22.6 22.0 19.8 22.6 20.9 20.9 21.4 20.9 Day 30 From: 22.2 To: 21.4 Min Temp Day 2 3 4 10 21 25 26 28 From: 33.9 33.9 34.4 29.4 23.9 23.3 23.9 23.9 To: 34.2 34.2 34.8 29.8 24.2 23.7 24.2 24.8 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 30.3 33.1 33.3 33.6 35.0 35.3 33.9 32.2 28.9 29.2 28.9 29.7 29.2 28.9 28.9 28.9 To: 32.4 33.2 33.6 34.3 35.2 34.1 33.6 30.3 29.8 28.7 29.8 28.9 29.1 28.2 28.8 28.3 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 27.8 26.9 27.8 22.2 21.9 23.9 22.2 21.9 22.2 23.3 22.8 22.2 24.4 23.9 23.9 To: 27.3 24.7 23.4 20.7 23.0 23.3 22.0 21.7 23.1 23.2 21.8 23.2 24.8 23.6 24.5 Number of NCDC observations per day: 8