LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1962 MONTH APRIL ....... 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 40.0 56.7 48.1 T 020 18.2 23 360 0.0 6 677.8 02 46.4 50.0 48.1 0 020 20.2 24 020 0.0 4 676.5 03 48.9 56.7 51.9 0 020 15.9 22 020 0.0 3 676.8 04 53.6 58.3 55.3 0 090 16.0 21 020 0.0 1 672.2 05 50.0 52.2 51.3 0 020 24.1 31 020 0.0 7 676.6 BSIF 06 51.1 58.3 56.1 0 360 20.3 25 360 0.0 4 681.7 BSIF 07 56.7 62.2 59.1 0 020 15.6 21 360 0.0 1 681.8 08 61.1 65.6 62.9 0 110 13.3 17 110 0.0 0 677.2 09 62.5 65.6 63.5 0 360 14.4 23 360 0.0 2 672.4 10 54.7 62.8 56.6 T 360 17.8 21 360 0.0 6 674.7 11 55.0 63.9 59.7 T 360 14.7 20 360 0.0 0 675.8 12 60.6 65.6 62.4 0 070 11.9 14 050 0.0 0 679.1 13 61.7 65.6 64.3 0 050 11.3 15 070 0.0 0 682.9 14 61.4 66.1 63.4 0 090 10.0 14 050 0.0 0 684.3 15 60.6 65.6 63.6 0 090 11.5 14 090 0.0 1 678.5 16 65.0 68.2 67.3 0 090 10.3 14 090 0.0 1 674.6 17 65.0 70.6 67.7 0 090 9.2 13 070 0.0 1 675.5 18 63.1 71.1 65.8 0 360 8.0 16 360 0.0 2 678.7 19 53.6 64.4 59.4 T 360 17.8 25 360 0.0 5 682.6 BS 20 49.2 53.9 50.6 T 360 20.9 28 360 0.0 6 681.5 BS 21 48.6 55.0 52.1 T 360 18.9 23 360 0.0 6 679.1 22 46.1 53.3 48.9 0 020 11.3 15 050 0.0 7 678.2 23 46.7 60.6 55.7 0 110 10.4 14 090 0.0 2 673.5 24 55.9 62.2 58.1 0 110 14.1 20 110 0.0 0 668.1 25 62.2 67.8 65.8 0 090 14.4 20 090 0.0 0 668.1 26 61.1 65.6 62.2 0 020 19.4 24 020 0.0 0 674.3 27 52.0 61.1 54.3 0 020 18.2 22 360 0.0 1 677.3 28 49.7 54.4 51.5 T 020 20.7 28 360 0.0 2 680.0 29 51.4 55.0 53.1 T 360 16.6 23 360 0.0 7 678.1 30 52.0 57.8 53.9 T 360 12.1 21 360 0.0 1 678.1 AVG 54.9 61.2 57.8 360 15.3 31 020 0.0 3 677.2 5th AVG MONTHLY -57.8 PCPN TRACE NR DAYS CLEAR 19 HIGHEST -40.0 ON 1st SUNSHINE / % PARTLY CLOUDY 08 LOWEST -71.1 ON 18th CLOUDY 03 HIGH PRESSURE 685.4 ON 13th LOW PRESSURE 666.8 ON 25th NET CHANGE IN SNOWSTAKE FIELD: +0.40 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. All wind and pressure data taken from original LCD unless otherwise indicated. Prevailing and peak wind direction converted from cardinal direction to degrees. Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 55.1 54.9 Avg Wnd Spd Avg Press 675.9 677.2 Min T 61.0 61.2 Max Press 685.2 685.4 Fastest Wnd MPH Avg T 58.1 57.8 Min Press Changes to Daily Data: Max Temp Day 2 4 9 10 14 18 19 20 21 24 27 28 29 30 From: 46.7 54.4 62.8 55.0 61.7 63.3 55.6 49.4 48.9 56.1 52.2 50.0 53.3 52.2 To: 46.4 53.6 62.5 54.7 61.4 63.1 53.6 49.2 48.6 55.9 52.0 49.7 51.4 52.0 Min Temp Day 16 From: 62.8 To: 68.2 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 48.3 48.3 52.8 55.0 51.1 55.0 59.4 63.3 64.4 58.9 59.4 63.3 63.9 63.9 63.3 To: 48.1 48.1 51.9 55.3 51.3 56.1 59.1 62.9 63.5 56.6 59.7 62.4 64.3 63.4 63.6 Day 16 17 18 20 21 22 23 24 25 26 27 28 29 30 From: 67.2 68.3 67.2 51.7 52.2 50.0 53.9 59.4 65.0 63.3 56.7 52.2 55.0 55.0 To: 67.3 67.7 65.8 50.6 52.1 48.9 55.7 58.1 65.8 62.2 54.3 51.5 53.1 53.9 Number of NCDC observations per day: 8