***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1965 MONTH DECEMBER ....... 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 35.9 38.9 37.1 T 350 4.6 10 010 24.0 2 683.8 IC 02 28.7 36.1 30.7 T 280 9.3 18 280 8.0 8 684.6 IC,IF 03 26.4 30.6 28.7 T 290 11.7 20 280 7.1 8 688.8 IC,IF 04 27.0 32.2 29.3 T 090 5.2 9 170 20.9 6 693.8 IC 05 30.6 32.8 31.4 0 090 11.2 17 090 24.0 1 694.3 06 30.9 33.3 31.8 0 080 10.3 17 090 24.0 1 692.3 07 28.1 33.3 29.9 T 020 13.2 18 360 24.0 6 696.9 IC,IF 08 28.3 30.6 29.5 T 020 10.5 15 360 20.1 6 695.3 IC 09 27.8 30.6 28.9 T 360 10.1 16 360 19.0 6 694.4 IC,IF 10 26.7 30.0 27.6 T 340 12.6 20 360 20.2 7 692.3 IC,IF 11 27.2 29.4 28.9 T 070 9.3 14 360 24.0 1 691.4 IC,IF 12 27.5 29.4 28.4 0 080 6.6 14 090 21.6 4 690.3 IF 13 25.9 29.4 26.9 T 080 3.3 10 080 12.5 7 692.0 IC,IF 14 27.2 29.4 27.9 0 100 7.9 13 080 19.6 2 696.7 15 26.7 29.4 27.8 0 100 9.2 15 070 23.4 0 696.3 16 27.0 28.3 27.6 0 110 8.2 12 090 24.0 0 694.3 17 27.5 28.9 27.9 0 110 11.8 15 090 24.0 0 696.9 18 26.4 28.3 26.8 0 090 7.9 16 090 24.0 0 699.8 19 25.6 27.2 26.0 0 090 9.7 15 080 24.0 1 698.7 20 25.9 27.2 26.4 0 070 9.0 13 080 24.0 0 697.2 21 25.6 30.6 28.2 T 020 7.5 15 010 20.1 3 695.4 22 24.2 30.0 26.0 0 050 13.2 23 010 15.3 3 688.7 IF 23 24.2 27.8 26.0 T 330 13.7 24 360 15.2 7 690.9 IC,IF,BS 24 22.0 25.6 23.9 T 330 12.3 22 360 12.3 7 694.5 IC,IF,BS 25 22.2 25.6 24.4 T 350 10.6 15 040 21.5 4 696.2 IC 26 18.9 25.0 21.4 T 360 16.3 30 010 11.7 6 690.3 IC,IF+,BS 27 21.1 24.4 22.6 T 040 6.3 15 360 5.4 8 691.6 IC,IF 28 22.8 25.6 23.9 T 020 5.3 13 360 4.7 8 694.0 IF+ 29 21.1 26.1 24.4 T 090 3.9 10 090 10.0 7 694.2 30 24.4 26.7 25.6 0 020 7.7 10 040 24.0 2 693.8 31 23.9 26.1 25.0 0 010 8.4 13 360 23.8 2 693.2 IF AVG 26.1 29.3 27.4 T 020 9.3 30 010 18.6 4 693.3 26th AVG MONTHLY -27.4 PCPN TRACE NR DAYS CLEAR 13 HIGHEST -18.9 ON 26th SUNSHINE 576.4/ 78% PARTLY CLOUDY 09 LOWEST -38.9 ON 1st CLOUDY 09 HIGH PRESSURE 700.6 ON 18th LOW PRESSURE 682.7 ON 1st NET CHANGE IN SNOWSTAKE FIELD: +0.37 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 Sky Cover changed to Octas. Station Pressure converted from inches of Hg to millibars. Prevailing wind direction taken from NCDC data. No data on original LCD. All wind and pressure data taken from original LCD unless otherwise indicated. Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 26.2 26.1 Avg Wnd Spd Avg Press Min T Max Press 700.5 700.6 Fastest Wnd MPH Avg T 27.9 27.4 Min Press 682.5 682.7 Changes to Daily Data: Max Temp Day 1 2 3 4 6 7 12 13 From: 36.1 28.9 26.7 27.2 31.1 28.3 27.8 26.1 To: 35.9 28.7 26.4 27.0 30.9 28.1 27.5 25.9 Day 16 17 18 20 22 23 24 From: 27.2 27.8 26.7 26.1 24.4 24.4 22.2 To: 27.0 27.5 26.4 25.9 24.2 24.2 22.0 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 From: 37.8 32.8 28.9 30.0 31.7 32.2 31.1 29.4 29.4 28.3 28.3 28.9 27.8 28.3 To: 37.1 30.7 28.7 29.3 31.4 31.8 29.9 29.5 28.9 27.6 28.9 28.4 26.9 27.9 Day 15 16 17 18 19 20 21 22 23 25 26 27 28 29 From: 28.3 27.8 28.3 27.8 26.7 26.7 28.3 27.2 26.1 23.9 22.2 22.8 24.4 23.9 To: 27.8 27.6 27.9 26.8 26.0 26.4 28.2 26.0 26.0 24.4 21.4 22.6 23.9 24.4 Number of NCDC observations per day: 8