***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1964 MONTH JANUARY ....... ALL TEMPERATURES MINUS C .............. DAY TEMPERATURE C. PCPN AVG WND FASTEST SUN SKY STN WX MAX MIN AVG SPEED MILE SHINE COVER PRESS DIR MPH SPD DIR HRS 01 21.4 24.4 22.7 T 030 10.4 17 360 M 2 698.5 02 19.8 22.8 21.0 T 050 12.2 22 020 M 7 691.5 03 17.8 20.6 19.4 T 360 3.5 12 350 M 8 688.0 04 19.4 23.3 21.0 T 020 11.3 21 040 M 8 688.8 05 21.4 24.4 22.7 T 030 14.8 25 020 M 2 689.4 06 22.0 23.9 23.1 0 350 13.9 24 360 M 8 694.2 07 23.9 28.3 25.9 T 360 6.9 14 360 M 6 695.3 08 23.7 28.9 26.4 0 360 5.2 9 020 M 4 698.2 09 23.7 25.6 24.6 T 360 9.2 12 340 M 8 699.4 10 23.7 27.8 25.9 T 040 4.6 8 050 M 2 686.0 11 25.9 26.7 26.3 0 050 6.9 10 050 M 0 702.4 12 27.0 27.8 27.3 0 050 8.1 10 050 M 0 700.4 13 25.3 28.3 26.9 T 360 4.6 8 360 M 3 696.8 14 25.9 28.9 27.2 T 360 4.6 7 010 M 6 694.0 15 25.3 29.4 26.8 0 060 4.6 8 040 M 2 690.0 16 27.0 31.1 28.9 T 100 1.2 9 130 M 6 688.1 17 26.7 30.6 28.7 T 120 6.4 13 360 M 5 684.4 18 27.5 30.6 28.7 T 020 11.5 17 020 M 6 686.2 19 27.2 29.4 28.3 T 020 12.7 18 010 M 7 689.0 20 29.4 31.1 30.1 T 360 12.7 14 010 M 5 692.9 21 29.4 31.1 30.0 0 010 12.7 14 020 M 2 694.8 22 28.7 30.6 29.4 0 060 10.4 12 030 M 0 693.4 23 28.1 31.7 30.2 0 080 9.6 10 080 M 0 690.5 24 31.1 32.8 31.9 0 070 5.8 7 060 M 0 689.9 25 30.9 32.8 32.0 0 110 3.5 6 120 M 2 689.4 26 28.3 34.4 32.3 0 100 1.2 7 030 M 4 689.1 27 30.6 33.9 33.0 0 110 8.1 9 110 M 4 689.7 28 28.7 35.6 32.7 0 110 6.9 7 100 M 3 690.0 29 24.2 29.4 26.7 T 100 5.8 7 100 M 8 692.0 30 26.7 33.9 32.3 T 030 6.9 9 010 M 6 692.3 31 32.2 34.4 33.6 M 110 11.5 13 120 M 6 687.7 AVG 25.9 29.2 27.6 T 360 8.0 25 020 M 4 692.0 5th AVG MONTHLY -27.6 PCPN TRACE NR DAYS CLEAR 11 HIGHEST -17.8 ON 3rd SUNSHINE M PARTLY CLOUDY 13 LOWEST -35.6 ON 28th CLOUDY 07 HIGH PRESSURE 703.0 ON 10th LOW PRESSURE 684.1 ON 17th,31st NET CHANGE IN SNOWSTAKE FIELD: +0.45 inches 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 Sky Cover changed to Octas. Pressure on the 31st taken from NCDC data. Data could not be read on original LCD. Station Pressure converted from inches of Hg to millibars. Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 26.1 25.9 Avg Wnd Spd Avg Press 692.1 692.0 Min T Max Press Fastest Wnd MPH 24.0 25.0 Avg T Min Press Changes to Daily Data: Max Temp Day 1 2 5 6 8 9 10 11 12 13 14 15 16 From: 21.7 20.0 21.7 22.2 23.9 23.9 23.9 26.1 27.2 25.6 27.2 26.1 27.2 To: 21.4 19.8 21.4 22.0 23.7 23.7 23.7 25.9 27.0 25.3 25.9 25.3 27.0 Day 18 22 23 25 28 29 From: 27.8 28.9 28.3 31.1 28.9 24.4 To: 27.5 28.7 28.1 30.9 28.7 24.2 Min Temp No Daily Changes Avg Temp Day 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 22.8 21.7 21.7 22.8 22.8 26.1 26.7 25.0 26.1 26.7 27.8 27.2 28.3 27.8 29.4 To: 22.7 21.0 21.0 22.7 23.1 25.9 26.4 24.6 25.9 26.4 25.9 26.9 27.2 26.8 28.9 Day 17 18 20 21 23 24 25 26 27 28 29 30 31 From: 28.9 29.4 30.6 30.6 30.0 32.2 32.2 31.7 32.2 32.2 28.3 30.6 33.3 To: 28.7 28.7 30.1 30.0 30.2 31.9 32.0 32.3 33.0 32.7 26.7 32.3 33.6 Fast MPH Day 5 17 From: 24 12 To: 25 13 Avg Press Day 1 From: 700.2 To: 698.5 Number of NCDC observations per day: 8