***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1961 MONTH MAY ....... 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 61.7 70.6 68.3 0 090 12.5 16 090 0.0 2 675.5 02 50.3 63.3 53.4 T 360 9.8 15 360 0.0 6 676.4 03 58.9 65.6 62.7 0 090 12.6 20 090 0.0 1 676.5 04 61.7 66.1 63.6 0 090 15.9 21 090 0.0 1 673.4 05 62.8 65.6 63.6 0 090 15.5 17 090 0.0 0 671.8 06 61.7 64.4 63.3 0 090 15.6 18 090 0.0 1 667.3 07 61.4 70.0 65.4 0 360 12.8 17 360 0.0 2 673.0 08 46.4 61.7 51.4 0 360 24.0 29 360 0.0 7 689.3 09 47.8 57.2 53.0 0 090 18.6 23 090 0.0 2 689.0 10 52.5 57.8 54.9 0 020 22.8 29 020 0.0 2 676.9 11 56.7 60.0 58.5 0 360 20.1 23 360 0.0 6 683.6 12 48.3 57.8 53.6 0 020 21.6 28 050 0.0 4 691.7 13 46.4 57.8 51.0 0 020 23.7 30 020 0.0 2 689.8 14 51.7 61.1 56.1 0 020 19.0 22 020 0.0 1 687.6 15 50.9 55.0 52.7 0 020 20.8 24 020 0.0 2 691.9 16 48.9 56.7 52.5 0 020 17.7 21 020 0.0 2 692.1 17 53.3 62.2 58.2 0 070 12.5 18 070 0.0 1 683.7 18 57.2 61.7 59.6 0 050 13.5 18 050 0.0 3 678.3 19 58.1 65.0 61.0 0 090 8.5 14 020 0.0 2 678.9 20 63.3 68.9 66.5 0 140 5.9 12 110 0.0 1 684.0 21 59.2 67.8 64.2 0 090 11.2 18 050 0.0 2 691.6 22 44.2 62.8 53.0 0 020 23.4 32 020 0.0 1 693.5 23 39.8 48.9 44.7 T 020 23.5 32 020 0.0 6 690.5 24 38.3 45.0 41.3 T 360 21.2 30 020 0.0 6 689.9 25 45.0 58.3 53.7 0 090 15.8 21 110 0.0 1 695.4 26 55.0 62.2 60.1 0 090 15.3 20 110 0.0 0 688.1 27 51.4 61.1 55.9 0 020 18.3 23 020 0.0 2 688.6 28 43.9 51.7 47.2 0 020 19.7 23 020 0.0 6 688.0 29 48.9 60.6 54.2 0 050 16.3 21 020 0.0 2 690.3 30 57.2 64.4 61.5 0 110 11.5 18 090 0.0 2 686.0 31 64.4 66.1 65.3 0 110 14.1 18 110 0.0 1 679.4 AVG 53.1 61.2 57.1 T 020 16.6 32 020 0.0 2 684.3 22nd,23rd AVG MONTHLY -57.1 PCPN TRACE NR DAYS CLEAR 23 HIGHEST -38.3 ON 24th SUNSHINE 0.0/ 0% PARTLY CLOUDY 07 LOWEST -70.6 ON 1st CLOUDY 01 HIGH PRESSURE 697.3 ON 25th LOW PRESSURE 665.3 ON 6th 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 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 Monthly Averages: (All temps are Minus C) From To From To From To Max T 53.2 53.1 Avg Wnd Spd Avg Press 684.2 684.3 Min T Max Press 696.9 697.3 Fastest Wnd MPH Avg T 57.2 57.1 Min Press Changes to Daily Data: Max Temp Day 2 7 8 10 13 15 19 21 22 23 27 From: 50.6 61.7 46.7 52.8 46.7 51.1 58.3 59.4 44.4 40.0 51.7 To: 50.3 61.4 46.4 52.5 46.4 50.9 58.1 59.2 44.2 39.8 51.4 Min Temp No Daily Changes Avg Temp Day 1 2 3 4 5 7 8 9 10 11 12 13 14 15 16 From: 66.1 57.2 62.2 63.9 64.4 66.1 54.4 52.8 55.6 58.3 53.3 52.2 56.7 53.3 52.8 To: 68.3 53.4 62.7 63.6 63.6 65.4 51.4 53.0 54.9 58.5 53.6 51.0 56.1 52.7 52.5 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 From: 57.8 59.4 61.7 66.1 63.9 53.9 44.4 41.7 51.7 58.9 56.7 36.7 55.0 57.8 62.2 To: 58.2 59.6 61.0 66.5 64.2 53.0 44.7 41.3 53.7 60.1 55.9 47.2 54.2 61.5 65.3 Number of NCDC observations per day: 8