LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1959 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 27.5 30.0 29.0 T 050 10.4 18 050 24.0 2 685.2 02 28.1 29.4 28.8 0 020 8.7 10 050 24.0 1 684.7 03 27.5 29.4 28.5 T 050 8.6 12 050 23.9 3 686.3 04 27.5 31.1 29.3 T 020 8.7 16 020 24.0 7 687.3 05 27.0 30.6 28.6 T 050 10.0 15 070 24.0 6 687.7 06 29.8 31.1 30.2 T 050 9.6 13 020 24.0 2 682.2 07 28.7 32.2 30.4 T 020 9.0 14 020 24.0 5 685.0 08 29.2 31.1 30.1 0 050 9.1 14 050 24.0 1 685.9 09 25.3 28.9 26.4 T 020 15.3 21 020 24.0 2 680.2 10 25.9 28.9 27.3 T 020 13.0 20 020 23.9 0 679.1 11 25.9 30.0 28.0 T 360 9.6 18 340 24.0 6 683.1 12 27.0 31.1 28.6 T 360 9.8 15 020 24.0 6 685.0 13 26.4 29.4 27.9 T 360 7.4 15 340 24.0 7 686.1 14 29.8 32.2 30.8 0 070 9.1 12 020 99.9 0 690.4 15 22.0 30.0 26.2 T 360 13.8 18 360 99.9 6 694.0 16 20.9 24.4 22.3 T 360 11.3 16 360 99.9 7 694.4 17 23.7 26.1 24.6 0 360 11.4 15 360 99.9 6 693.6 18 24.2 30.0 26.8 0 340 6.8 15 340 99.9 3 693.8 19 27.5 30.0 28.5 0 090 9.7 13 090 99.9 1 692.6 20 26.4 28.3 27.7 0 090 5.8 13 090 99.9 5 692.4 21 26.4 30.0 28.1 0 070 9.3 13 070 99.9 2 691.2 22 28.7 31.7 30.0 0 050 10.5 13 050 99.9 1 691.6 23 29.8 33.3 31.1 T 070 3.9 12 140 99.9 4 692.3 24 29.8 32.2 31.5 T 140 9.7 14 090 99.9 2 695.9 25 29.2 33.9 32.3 T 070 9.9 13 050 99.9 4 690.9 26 24.8 32.2 26.6 T 020 9.3 16 020 99.9 8 688.9 27 26.4 30.0 28.7 T 250 5.1 11 290 99.9 6 692.9 28 21.4 31.7 25.0 T 180 6.4 13 200 99.9 6 690.7 29 29.2 35.6 32.6 0 140 6.9 14 090 99.9 4 687.7 30 28.7 33.3 30.3 T 360 4.2 9 020 99.9 8 689.7 31 31.4 34.4 33.0 T 360 6.7 9 360 99.9 7 687.8 AVG 27.0 30.7 28.7 360 9.0 21 020 23.9 4 688.7 9th AVG MONTHLY -29.0 PCPN TRACE NR DAYS CLEAR 11 HIGHEST -20.9 ON 16th SUNSHINE 23.9/ 99% PARTLY CLOUDY 14 LOWEST -35.6 ON 29th CLOUDY 06 HIGH PRESSURE 696.6 ON 24th LOW PRESSURE 678.6 ON 10th NET CHANGE IN SNOWSTAKE FIELD: 9.99 SNOWSTAKE DATA NOT AVAILABLE. 14 Days used for Sunshine Data Calculations. 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 data taken from NCDC data. No data on original LCD. All wind and pressure data taken from original LCD unless otherwise indicated. Prevailing and peak wind direction converted from cardinal direction to degrees. Changed Extremes: From To Max T -21.1 -20.9 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 27.2 27.0 Avg Wnd Spd 8.9 9.0 Avg Press Min T Max Press Fastest Wnd MPH Avg T 29.0 28.7 Min Press 678.7 678.6 Changes to Daily Data: Max Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 27.8 28.3 27.8 27.8 27.2 30.0 28.9 29.4 25.6 26.1 26.1 27.2 26.7 30.0 22.2 To: 27.5 28.1 27.5 27.5 27.0 29.8 28.7 25.9 25.3 25.9 25.9 27.0 26.4 29.8 22.0 Day 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 21.1 23.9 24.4 27.8 26.7 26.7 28.9 30.6 30.0 29.4 25.0 26.7 21.7 29.4 28.9 31.7 To: 20.9 23.7 24.2 27.5 26.4 26.4 28.7 30.3 29.8 29.2 24.8 26.4 21.4 29.2 28.7 31.4 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 28.9 28.9 28.6 29.4 28.9 30.6 30.6 30.3 27.2 27.5 28.1 29.2 28.1 31.1 26.1 22.8 To: 29.0 28.8 28.5 29.3 28.6 30.2 30.4 30.1 26.4 27.3 28.0 28.6 27.9 30.8 26.2 22.3 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 25.0 27.2 28.9 27.5 28.3 30.3 31.9 31.1 31.7 28.6 28.3 26.7 32.5 31.1 33.1 To: 24.6 26.8 28.5 27.7 28.1 30.0 31.1 31.5 32.3 26.6 28.7 25.0 32.6 30.3 33.0 Avg MPH Day 29 30 31 From: 5.5 3.4 5.5 To: 6.9 4.2 6.7 Fast MPH Day 1 From: 16 To: 18 Number of NCDC observations per day: 24