***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1977 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 36.7 32.0 T 010 8.5 13 020 17.0 8 690.1 2 28.9 33.9 31.9 T 080 9.9 16 360 13.0 5 694.8 3 28.9 33.3 30.3 T 040 9.6 18 020 18.8 4 699.3 BS 4 29.4 31.1 30.3 T 070 10.0 13 080 24.0 0 700.3 5 28.9 30.5 29.3 T 040 13.4 20 050 24.0 0 698.0 6 27.7 30.6 28.1 0 050 12.2 23 040 24.0 0 694.7 7 27.7 28.9 28.1 T 070 9.3 18 040 24.0 1 695.0 8 27.7 28.9 28.1 T 040 10.8 17 040 24.0 2 692.8 9 27.2 28.9 28.2 T 060 9.2 14 040 24.0 4 690.2 10 26.1 30.0 28.3 T 020 12.1 17 010 21.3 7 692.9 11 27.8 31.1 30.5 T 010 6.8 15 030 23.6 6 694.7 12 30.6 32.7 32.1 T 080 5.1 9 030 24.0 5 693.9 13 31.6 32.8 32.1 T 090 6.6 9 070 24.0 4 690.1 14 30.0 32.8 30.8 T 090 6.4 11 110 23.9 2 684.6 15 30.5 31.7 31.0 T 090 5.4 9 080 24.0 2 681.4 16 30.0 31.7 31.0 T 090 6.2 12 080 24.0 2 681.3 17 30.6 32.2 31.7 T 010 6.7 11 340 24.0 5 685.2 18 29.4 32.2 30.3 T 030 9.7 13 030 23.8 3 683.5 19 27.2 30.6 28.7 T 030 11.2 20 020 20.8 6 684.6 20 26.7 31.1 28.8 T 020 10.6 17 020 11.0 6 683.2 21 26.1 31.1 27.3 T 030 15.7 22 030 16.0 6 681.0 BS 22 25.5 27.8 26.7 T 020 15.2 26 010 20.5 7 680.9 BS 23 25.6 28.3 27.3 T 010 14.3 23 020 16.0 6 683.2 24 25.0 28.3 26.6 T 020 13.8 23 020 14.8 6 681.4 25 25.0 27.2 25.8 T 360 14.9 28 010 19.7 7 682.1 26 24.4 28.9 26.4 T 340 13.5 23 020 8.3 6 683.1 27 23.9 30.0 29.2 T 130 3.4 23 360 19.6 1 685.8 28 27.8 30.0 29.0 0 030 6.0 8 140 24.0 2 683.9 29 27.2 29.4 28.0 0 040 8.2 14 010 22.5 2 682.4 30 26.6 28.3 27.7 T 350 7.4 13 020 23.1 5 685.0 31 22.8 28.3 24.4 0 340 14.0 17 340 12.5 8 687.3 IF,BS AVG 27.6 30.6 29.0 T 030 9.9 28 010 20.5 4 687.9 25th AVG MONTHLY -29.0 PCPN TRACE NR DAYS CLEAR 11 HIGHEST -22.8 ON 31st SUNSHINE 634.2/ 85% PARTLY CLOUDY 15 LOWEST -36.7 ON 1st CLOUDY 05 HIGH PRESSURE 701.4 ON 4th LOW PRESSURE 680.3 ON 22nd NET CHANGE IN SNOWSTAKE FIELD: +0.01 inches 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 -23.9 -22.8 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 27.9 27.6 Avg Wnd Spd Avg Press 687.9 687.9 Min T 30.4 30.6 Max Press Fastest Wnd MPH Avg T 29.2 29.0 Min Press 680.6 680.3 Changes to Daily Data: Max Temp Day 1 6 7 8 13 15 18 19 22 26 28 29 30 31 From: 31.7 27.8 27.8 27.8 31.7 30.6 30.0 28.9 26.1 25.0 28.3 27.8 27.2 24.4 To: 30.0 27.7 27.7 27.7 31.6 30.5 29.4 27.2 25.5 24.4 27.8 27.2 26.6 22.8 Min Temp Day 5 8 12 20 26 27 From: 30.0 28.3 32.2 29.4 27.2 29.4 To: 30.5 28.9 32.7 31.1 28.9 30.0 Avg Temp Day 1 2 3 4 5 6 7 9 10 11 12 13 14 15 16 17 From: 34.2 31.4 31.1 30.3 29.4 29.2 28.3 28.1 28.1 29.4 31.4 32.2 31.4 31.1 30.8 31.4 To: 32.0 31.9 30.3 30.3 29.3 28.1 28.1 28.2 28.3 30.5 32.1 32.1 30.8 31.0 31.0 31.7 Day 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 31.1 29.7 28.1 28.6 26.9 26.9 26.7 26.1 26.1 26.7 29.2 28.6 27.8 26.4 To: 30.3 28.7 28.8 27.3 26.7 27.3 26.6 25.8 26.4 29.2 29.0 28.0 27.7 24.4 Number of NCDC observations per day: 8