LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1961 MONTH FEBRUARY ....... 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 31.6 35.0 33.5 070 15.5 20 070 99.9 0 693.1 02 31.7 34.4 33.0 070 16.7 23 070 99.9 0 687.1 03 30.0 34.4 31.8 340 14.5 21 340 99.9 8 689.1 04 28.9 33.3 31.5 360 9.5 13 340 99.9 6 694.2 05 30.6 35.6 33.4 090 12.4 16 090 99.9 5 695.3 IF 06 34.4 36.7 35.7 070 9.7 14 070 99.9 0 690.5 IF 07 36.1 38.3 37.4 070 8.5 10 070 99.9 4 690.1 08 36.1 40.0 39.1 070 7.8 9 090 99.9 6 690.8 09 37.7 41.1 39.5 090 7.7 12 090 99.9 3 687.7 10 38.3 41.7 40.2 360 8.7 12 090 99.9 3 686.5 11 38.3 43.9 42.3 360 3.3 9 360 99.9 2 688.6 12 42.7 46.1 44.6 340 2.6 6 070 99.9 1 688.5 13 43.9 47.2 45.2 070 7.5 9 070 99.9 2 685.7 14 46.1 48.3 47.2 070 7.8 10 070 99.9 0 684.8 15 45.5 48.9 46.8 090 8.3 10 020 99.9 6 686.3 16 46.6 47.8 47.4 020 10.0 13 050 99.9 2 687.4 17 42.8 48.3 46.9 020 10.5 16 360 99.9 4 688.7 18 40.0 43.3 41.5 360 16.0 22 360 99.9 6 687.3 19 38.3 44.4 42.3 340 12.8 21 340 99.9 5 688.0 20 38.3 42.2 40.2 360 13.7 18 360 99.9 6 685.8 21 38.3 43.9 41.9 360 11.4 16 340 99.9 6 689.5 22 35.6 45.6 41.7 340 12.2 15 340 99.9 6 690.7 23 44.4 47.8 46.4 340 10.7 15 050 99.9 4 695.1 24 44.0 47.2 46.0 360 12.2 16 050 99.9 6 692.3 25 45.1 48.3 46.8 360 11.3 15 360 99.9 5 692.3 26 36.6 50.0 41.4 360 12.4 17 360 99.9 6 688.5 27 48.9 51.1 49.7 070 9.8 15 020 99.9 2 689.8 28 50.0 51.1 50.4 070 10.5 14 050 99.9 2 688.3 AVG 39.3 43.4 41.6 360 10.5 23 070 99.9 5 689.4 2nd AVG MONTHLY -41.6 PCPN TRACE NR DAYS CLEAR 10 HIGHEST -28.9 ON 4th SUNSHINE / % PARTLY CLOUDY 17 LOWEST -51.1 ON 27th,28th CLOUDY 01 HIGH PRESSURE 697.6 ON 1st LOW PRESSURE 683.9 ON 20th NET CHANGE IN SNOWSTAKE FIELD: +0.30 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. Station Pressure data taken from NCDC data. No data on original LCD. All wind 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 -30.0 -28.9 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 39.4 39.3 Avg Wnd Spd 12.3 10.5 Avg Press 689.5 689.4 Min T Max Press Fastest Wnd MPH Avg T 41.4 41.6 Min Press Changes to Daily Data: Max Temp Day 2 4 5 8 13 17 18 19 20 28 From: 32.2 30.0 31.0 36.6 44.0 42.9 40.1 39.0 39.0 50.1 To: 31.7 28.9 30.6 36.1 43.9 42.8 40.0 38.3 38.3 50.0 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 From: 33.3 33.3 32.2 31.7 33.3 35.6 37.2 38.3 39.4 40.0 41.1 44.4 45.6 To: 33.5 33.0 31.8 31.5 33.4 35.7 37.4 39.1 39.5 40.2 42.3 44.6 45.2 Day 15 16 17 18 19 20 21 22 23 24 25 26 27 28 From: 47.2 47.2 45.6 41.7 41.7 40.6 41.1 40.6 46.1 45.6 46.7 43.3 50.0 50.6 To: 46.8 47.4 46.9 41.5 42.3 40.2 41.9 41.7 46.4 46.0 46.8 41.4 49.7 50.4 Number of NCDC observations per day: 24