***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1971 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 28.3 31.1 30.3 T 010 14.3 21 360 16.5 6 690.6 IC,IF,BS 2 27.0 31.1 28.2 T 010 11.9 21 360 8.5 8 692.2 IC,IF 3 24.8 30.0 27.0 T 040 11.3 14 040 13.4 7 691.1 IC,IF 4 24.4 30.0 27.5 T 360 12.1 18 360 6.5 7 690.0 IC,BS 5 26.1 29.4 27.6 T 360 6.4 18 340 6.5 8 691.5 IC,IF 6 26.1 31.1 29.4 T 030 13.3 16 020 24.0 3 688.2 IC,IF 7 27.8 29.4 28.7 T 040 12.8 18 040 24.0 1 686.0 IC,IF 8 27.0 29.4 28.2 T 360 8.6 17 340 18.5 7 690.0 IC,IF 9 25.9 29.4 27.4 T 010 10.0 15 360 12.0 7 691.0 IC,IF 10 25.0 28.3 26.5 T 030 11.8 17 030 18.0 6 692.9 IC,IF 11 26.1 28.7 27.4 T 110 11.5 18 110 24.0 3 689.2 IC,IF 12 26.1 30.0 28.9 T 010 7.9 18 050 24.0 5 688.0 IC,IF 13 27.8 31.7 31.1 T 130 6.2 12 180 24.0 3 689.6 IC,IF 14 29.8 32.2 30.5 0 150 4.6 10 190 24.0 0 689.7 15 28.9 31.7 30.0 0 100 6.2 9 060 24.0 0 693.2 16 23.7 31.1 27.9 0 100 8.5 13 110 23.0 2 690.8 17 22.2 29.4 23.8 T 100 9.9 15 030 19.0 7 689.1 IC 18 20.9 25.0 22.1 0.04 360 13.3 20 320 5.0 8 692.6 IC,SG 19 19.8 22.8 21.1 T 310 12.8 21 290 1.8 7 695.7 IC,IF 20 20.6 23.9 22.8 T 010 15.4 21 180 20.0 4 693.3 IC,IF 21 20.3 22.8 20.7 T 020 18.7 23 020 24.0 2 693.8 IC,IF,BS 22 19.8 22.2 20.7 T 010 16.9 28 360 24.0 7 697.0 IC,IF,BS 23 17.6 21.7 19.6 T 300 10.3 22 310 0.0 8 701.0 IF,BS 24 17.8 22.8 21.2 T 030 10.7 18 360 12.0 4 700.3 IF 25 21.4 23.1 22.0 T 050 10.5 16 360 21.4 4 699.2 IC,IF 26 21.7 23.3 22.4 T 010 9.3 16 030 18.7 5 698.4 IC,IF 27 20.9 24.2 22.5 T 040 10.3 17 050 20.0 8 694.8 IC,IF 28 21.7 26.1 25.5 T 340 6.6 15 340 14.8 5 691.4 IC,IF 29 23.1 27.2 23.9 0 090 5.5 10 060 10.3 7 689.7 IF 30 22.8 26.7 24.9 T 100 4.7 12 090 7.5 7 687.5 IF 31 23.7 26.7 25.6 T 030 6.8 14 050 9.3 8 687.5 IC,IF AVG 23.8 27.5 25.7 T 010 10.3 28 360 16.1 5 692.1 22nd AVG MONTHLY -25.7 PCPN 0.04 NR DAYS CLEAR 04 HIGHEST -17.6 ON 23rd SUNSHINE 498.7/67.0% PARTLY CLOUDY 18 LOWEST -32.2 ON 14th CLOUDY 09 HIGH PRESSURE 701.7 ON 24th LOW PRESSURE 685.1 ON 7th 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 -17.8 -17.6 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 24.3 23.8 Avg Wnd Spd 10.7 10.3 Avg Press Min T Max Press 700.9 701.7 Fastest Wnd MPH Avg T 25.9 25.7 Min Press 685.2 685.1 Changes to Daily Data: Max Temp Day 2 3 8 9 14 16 18 19 21 22 23 25 27 29 31 From: 27.8 26.7 27.8 26.7 30.0 28.9 21.7 20.0 20.6 20.6 19.4 21.7 21.1 23.3 23.9 To: 27.0 24.8 27.0 25.9 29.8 23.7 20.9 19.8 20.3 19.8 17.6 21.4 20.9 23.1 23.7 Min Temp Day 11 25 27 From: 28.3 22.8 23.3 To: 28.7 23.1 24.2 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 29.7 29.4 28.3 27.2 27.8 28.6 28.6 28.6 28.1 26.7 27.2 28.1 29.7 31.1 30.3 30.0 To: 30.3 28.2 27.0 27.5 27.6 29.4 28.7 28.2 27.4 26.5 27.4 28.9 31.1 30.5 30.0 27.9 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 25.8 23.3 21.4 22.2 21.7 21.4 20.6 20.3 22.2 22.5 22.2 23.9 25.3 24.7 25.3 To: 23.8 22.1 21.1 22.8 20.7 20.7 19.6 21.2 22.0 22.4 22.5 25.5 23.9 24.9 25.6 Number of NCDC observations per day: 8