***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1975 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 30.0 32.8 31.2 T 060 8.9 11 090 M 3 682.0 IC 2 25.9 32.2 28.9 T 030 17.0 21 020 M 6 679.2 IC,IF,BS 3 23.1 28.9 23.6 0 360 23.5 30 360 M 7 683.6 BS 4 22.8 27.5 26.2 0 020 17.7 26 360 M 5 686.6 BS,IC 5 25.6 28.1 27.4 T 030 12.7 16 360 M 4 686.2 BS,IC 6 25.6 28.3 26.7 T 360 17.1 19 360 M 1 687.2 IC 7 26.1 28.9 27.9 T 360 11.9 19 360 M 6 690.3 IC 8 26.1 28.3 27.5 T 020 13.2 18 360 M 2 688.2 IC 9 27.2 28.3 27.7 T 010 15.4 17 020 M 0 685.4 IC,DS 10 25.9 28.3 27.1 T 020 14.3 16 020 M 0 688.8 IC 11 26.1 27.8 27.2 T 050 9.3 13 040 M 0 694.2 IC 12 26.4 28.7 27.5 0 110 6.5 10 110 M 0 694.0 13 26.7 28.9 28.4 0 090 4.8 8 100 M 2 691.4 14 27.5 28.9 28.4 0 020 6.0 8 290 M 2 690.0 15 27.0 29.4 27.8 0 010 6.2 8 360 M 3 687.1 16 26.4 29.2 27.8 T 350 4.3 7 360 M 6 684.4 IC,IF 17 26.7 31.1 30.2 T 120 3.0 6 140 M 2 681.5 IC,SG 18 28.9 31.1 30.0 T 140 2.4 6 360 M 1 683.6 IC 19 28.3 30.6 29.4 0 120 7.1 9 090 M 0 685.2 20 27.0 30.0 27.4 0 120 8.8 10 110 M 2 687.6 21 27.0 28.3 27.5 0 120 5.7 9 100 M 0 688.7 22 27.5 28.3 28.1 0 120 3.3 6 120 M 0 690.6 23 25.3 28.3 26.5 0 150 2.0 4 100 M 2 695.2 24 22.0 26.7 23.4 0 200 3.5 6 220 M 6 697.5 25 21.7 24.4 23.4 0 080 6.3 8 070 M 5 696.8 26 22.8 24.8 23.8 0 100 14.1 17 090 M 1 693.7 27 23.3 25.3 25.0 0 080 9.3 15 080 M 0 690.9 28 24.2 25.6 25.0 0 360 5.9 13 090 M 3 692.9 29 23.1 25.6 23.3 0 350 15.5 19 360 M 7 695.5 IC,DS 30 22.8 25.9 24.4 T 040 13.3 15 020 M 6 694.1 IC,DS 31 23.9 26.7 26.4 0 090 8.6 13 040 M 2 686.2 AVG 25.6 28.3 26.9 T 120 9.6 30 360 M 3 689.0 3rd AVG MONTHLY -26.9 PCPN TRACE NR DAYS CLEAR 18 HIGHEST -21.7 ON 25th SUNSHINE M PARTLY CLOUDY 11 LOWEST -32.8 ON 1st CLOUDY 02 HIGH PRESSURE 697.6 ON 25th LOW PRESSURE 678.3 ON 2nd NET CHANGE IN SNOWSTAKE FIELD: M SNOWSTAKE DATA NOT AVAILABLE. 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 Monthly Averages: (All temps are Minus C) From To From To From To Max T 25.9 25.6 Avg Wnd Spd 8.4 9.6 Avg Press 688.5 689.0 Min T 28.1 28.3 Max Press 697.2 697.6 Fastest Wnd MPH 26.0 30.0 Avg T 27.0 26.9 Min Press 679.7 678.3 Changes to Daily Data: Max Temp Day 2 3 10 12 14 15 16 20 21 22 23 24 28 29 From: 27.8 23.3 27.2 26.7 28.3 27.8 27.2 27.2 27.2 27.8 26.1 23.9 25.0 23.3 To: 25.9 23.1 25.9 26.4 27.5 27.0 26.4 27.0 27.0 27.5 25.3 22.0 24.2 23.1 Min Temp Day 4 5 12 16 17 21 26 27 30 From: 26.7 27.8 27.8 28.9 30.6 27.8 24.4 25.0 25.0 To: 27.5 28.1 28.7 29.2 31.1 28.3 24.8 25.3 25.9 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 31.4 30.0 26.1 24.7 26.7 26.9 27.5 27.2 27.8 27.8 26.9 27.2 27.8 28.6 28.6 28.1 To: 31.2 28.9 23.6 26.2 27.4 26.7 27.9 27.5 27.7 27.1 27.2 27.5 28.4 28.4 27.8 27.8 Day 17 20 23 24 25 26 27 28 29 30 31 From: 28.6 28.6 27.2 25.3 23.1 23.6 24.2 25.3 24.4 23.9 25.3 To: 30.2 27.4 26.5 23.4 23.4 23.8 25.0 25.0 23.3 24.4 26.4 Number of NCDC observations per day: 8