***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1975 MONTH JANUARY .... 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 22.0 24.4 22.8 0 040 5.7 17 020 10.3 6 694.4 IF 2 21.1 24.8 22.3 0 030 4.2 9 060 19.2 6 689.9 3 21.4 25.6 23.1 T 160 5.6 14 090 15.1 6 685.9 SG 4 21.1 24.4 23.1 T 060 7.9 20 040 4.2 8 687.5 SG 5 23.1 24.4 23.8 0 090 5.8 23 060 8.1 3 687.5 6 21.4 24.4 23.0 T 090 8.5 15 090 15.0 7 687.8 SG,IF 7 21.7 26.1 25.5 T 120 9.1 23 110 1.0 6 688.2 8 22.0 26.7 23.7 0 090 4.8 17 120 18.0 5 690.8 9 21.7 25.9 25.0 0 040 6.3 15 030 11.3 5 694.7 10 23.9 27.5 25.9 0 180 2.1 9 060 19.1 4 694.6 11 21.4 27.8 24.3 0 050 8.9 17 070 24.0 2 694.0 12 19.8 26.1 22.5 0 020 11.8 26 050 10.1 7 698.7 13 20.0 25.3 24.1 0 030 14.2 26 030 4.0 6 702.3 14 23.9 27.5 26.4 0 110 7.6 21 040 20.3 3 699.7 15 26.7 28.7 28.2 0 100 7.1 15 100 24.0 0 695.3 16 28.3 29.4 29.0 0 090 4.9 12 100 24.0 1 695.7 17 28.1 29.4 28.9 0 150 4.9 9 150 24.0 3 694.4 18 26.7 29.8 28.5 0 120 5.5 17 030 13.3 4 696.6 RIME 19 25.6 30.6 28.8 0 100 3.8 9 120 23.0 2 695.8 RIME 20 25.6 30.9 29.5 0 110 6.9 12 010 18.0 1 697.0 RIME 21 29.8 31.1 30.5 0 120 9.6 14 110 24.0 1 698.9 22 29.2 31.7 29.7 0 110 8.5 18 110 23.3 3 697.4 23 28.1 30.0 28.5 0 140 10.2 14 110 24.0 1 694.7 24 28.1 30.0 29.1 0 140 9.3 21 140 23.4 2 690.0 25 26.7 32.0 30.5 0 170 5.6 12 150 21.4 3 685.7 26 29.4 32.8 32.1 0 100 9.7 13 050 15.0 4 682.7 IC,IF 27 32.2 35.0 34.1 0 100 5.5 15 100 20.2 4 680.2 28 33.9 37.2 35.9 0 030 9.6 13 030 23.0 3 682.2 IC 29 32.5 37.2 33.8 0 050 14.1 17 070 21.5 5 674.7 IC,IF 30 32.2 37.2 35.1 T 040 10.7 17 050 22.2 4 672.1 IC,IF 31 33.3 39.4 36.6 T 030 4.9 15 050 18.2 4 676.9 IC,IF AVG 25.8 29.5 27.9 T 030 7.5 26 030 17.5 4 690.5 12th,13th AVG MONTHLY -27.9 PCPN TRACE NR DAYS CLEAR 08 HIGHEST -19.8 ON 12th SUNSHINE 542.2/ 73% PARTLY CLOUDY 20 LOWEST -39.4 ON 31st CLOUDY 03 HIGH PRESSURE 703.5 ON 14th LOW PRESSURE 669.6 ON 31st 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 -37.2 -39.4 Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 26.3 25.8 Avg Wnd Spd 7.7 7.5 Avg Press 690.7 690.5 Min T 29.2 29.5 Max Press Fastest Wnd MPH Avg T 27.7 27.9 Min Press Changes to Daily Data: Max Temp Day 1 3 5 6 8 11 12 17 21 22 23 24 29 From: 22.8 21.7 23.3 22.2 23.9 25.0 21.7 28.9 30.0 29.4 28.9 28.3 34.4 To: 22.0 21.4 23.1 21.4 22.0 21.4 19.8 28.1 29.8 29.2 28.1 28.1 32.5 Min Temp Day 2 9 10 13 14 15 18 20 25 31 From: 23.9 25.6 26.7 24.4 26.7 28.3 29.4 30.6 31.1 36.1 To: 24.8 25.9 27.5 25.3 27.5 28.7 29.8 30.9 32.0 39.4 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 23.6 22.5 23.6 22.8 23.9 23.3 23.9 25.3 23.6 25.3 26.4 23.9 22.2 25.3 27.5 28.9 To: 22.8 22.3 23.1 23.1 23.8 23.0 25.5 23.7 25.0 25.9 24.3 22.5 24.1 26.4 28.2 29.0 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 29.2 28.1 28.1 28.1 30.6 30.6 29.4 29.2 28.9 31.1 33.6 35.6 35.8 34.7 34.7 To: 28.9 28.5 28.8 29.5 30.5 29.7 28.5 29.1 30.5 32.1 34.1 35.9 33.8 35.1 36.6 Number of NCDC observations per day: 8