***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1973 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 29.8 32.8 30.6 T 060 13.6 17 070 24.0 0 671.5 IC 2 28.7 32.5 30.3 T 010 10.7 18 010 23.1 6 675.6 IF,IC,BS 3 29.4 33.9 33.0 T 020 11.1 14 010 23.3 4 678.9 IC,IF 4 31.1 33.9 31.9 T 010 11.5 17 010 16.2 5 679.4 IC,IF,BS 5 31.4 34.4 32.6 T 060 5.6 14 010 23.4 1 679.5 IC,IF 6 29.8 33.3 31.5 0 110 7.9 11 080 24.0 1 679.7 7 28.9 32.2 31.1 0 110 5.9 12 100 24.0 1 679.0 8 30.3 33.1 31.8 0 120 3.8 8 110 24.0 2 678.4 9 30.6 33.3 32.4 T 020 6.5 9 330 16.1 4 678.7 IC,IF 10 31.4 33.9 32.7 T 110 3.8 9 020 23.0 4 679.2 IC 11 31.4 33.3 32.4 T 070 5.4 8 090 24.0 0 678.0 IC 12 30.9 33.3 31.6 0 100 7.3 10 080 24.0 0 675.8 13 29.4 32.2 30.9 0 110 3.0 10 100 24.0 3 680.3 14 27.8 31.7 29.7 0 270 4.5 13 240 24.0 6 681.4 IC 15 25.0 30.6 27.2 T 150 6.8 12 150 22.6 4 679.5 16 26.1 29.4 28.8 0 130 10.9 15 140 24.0 2 681.7 17 28.3 31.7 29.5 0 110 7.7 13 110 24.0 2 680.6 18 28.7 31.7 29.6 0 110 9.3 11 100 24.0 1 677.7 19 28.7 29.8 29.1 0 120 11.7 14 120 24.0 0 677.0 20 28.7 30.0 29.5 0 120 10.3 14 120 24.0 0 678.3 21 28.7 30.6 29.5 0 130 8.5 13 120 24.0 0 680.4 22 28.1 29.4 28.7 0 080 8.2 12 090 24.0 0 682.0 23 28.1 31.1 29.7 0 020 2.3 10 080 24.0 5 685.9 24 28.3 30.0 29.6 0 040 4.3 7 120 24.0 2 688.5 25 24.2 30.0 27.5 0 360 11.1 18 030 24.0 5 688.3 26 23.7 28.3 25.1 T 350 14.1 24 330 23.2 7 690.1 IC,IF,BS 27 23.9 27.8 26.4 T 030 12.7 18 320 23.7 4 694.6 IC,IF 28 21.4 26.7 23.4 T 020 11.9 20 360 23.3 5 699.6 IC,IF 29 21.7 26.1 23.7 T 050 9.0 17 360 22.7 6 697.8 IC,IF 30 22.8 26.1 24.3 T 010 11.8 16 010 21.3 6 697.6 IC,IF 31 22.6 25.0 23.2 T 010 14.3 17 360 16.0 7 699.6 IC,IF AVG 27.7 30.9 29.3 T 110 8.6 24 330 22.9 3 683.0 26th AVG MONTHLY -29.3 PCPN TRACE NR DAYS CLEAR 15 HIGHEST -21.4 ON 28th SUNSHINE 709.9/ 95% PARTLY CLOUDY 14 LOWEST -34.4 ON 5th CLOUDY 02 HIGH PRESSURE 702.0 ON 29th LOW PRESSURE 670.5 ON 1st 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 -21.7 -21.4 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 28.2 27.7 Avg Wnd Spd 8.8 8.6 Avg Press 682.5 683.0 Min T 30.7 30.9 Max Press 699.7 702.0 Fastest Wnd MPH Avg T 29.4 29.3 Min Press 672.0 670.5 Changes to Daily Data: Max Temp Day 1 2 5 6 8 10 11 12 18 19 20 21 22 23 25 26 From: 31.1 28.9 31.7 31.7 30.6 31.7 31.7 31.7 28.9 28.9 29.4 28.9 28.9 28.3 27.8 24.4 To: 29.8 28.7 31.4 29.8 30.3 31.4 31.4 30.9 28.7 28.7 28.7 28.7 28.1 28.1 24.2 23.7 Day 28 30 31 From: 21.7 23.3 22.8 To: 21.4 22.8 22.6 Min Temp Day 2 8 17 19 29 From: 31.1 32.2 30.0 29.4 24.4 To: 32.5 33.1 31.7 29.8 26.1 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 31.9 30.0 31.7 32.5 33.1 32.5 30.6 31.4 31.9 32.8 32.5 32.5 30.8 29.7 27.8 27.8 To: 30.6 30.3 33.0 31.9 32.6 31.5 31.1 31.8 32.4 32.7 32.4 31.6 30.9 29.7 27.2 28.8 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 29.2 30.3 29.2 29.7 29.7 29.2 29.7 29.2 28.9 26.4 25.8 24.2 23.1 24.7 23.9 To: 29.5 29.6 29.1 29.5 29.5 28.7 29.7 29.6 27.5 25.1 26.4 23.4 23.7 24.3 23.2 Number of NCDC observations per day: 24