***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1974 MONTH SEPTEMBER .... ALL TEMPERATURES MINUS C.... DAY TEMPERATURE C PCPN AVG WIND FASTEST SUN SKY STN WX MAX MIN AVG SPEED MILE SHINE COVER PRESS DIR MPH SPD DIR HRS 1 48.6 63.9 56.9 T 010 11.2 21 020 0.0 5 685.6 SG,BS 2 44.2 60.0 46.1 T 360 11.2 17 350 0.0 7 680.1 SG 3 43.3 57.2 53.9 T 170 8.9 16 340 0.0 4 679.2 SG 4 50.6 59.4 56.4 T 130 12.0 18 110 0.0 3 671.6 SG 5 53.9 69.2 66.0 0 130 13.3 18 130 0.0 1 666.6 BS 6 57.5 69.4 62.8 0 040 15.8 19 040 0.0 2 667.1 BS 7 53.6 65.0 54.2 T 020 20.4 22 030 0.0 6 670.6 SG,BS,IF 8 53.3 58.3 57.5 T 040 19.6 24 020 0.0 2 668.9 SG,BS,IF 9 53.9 58.3 55.8 0 030 16.4 22 040 0.0 3 671.0 BS,IF 10 48.1 58.3 50.4 T 010 19.6 24 020 0.0 8 675.2 SG,BS,IF 11 43.6 51.1 45.8 T 360 16.4 23 350 0.0 8 675.2 SG,BS,IF 12 41.4 53.6 46.0 T 350 12.6 22 350 0.0 8 673.6 SG,BS,IF 13 41.7 58.3 55.6 T 020 10.9 16 340 0.0 4 668.3 SG,IF 14 53.3 58.6 56.3 0 120 18.1 23 010 0.0 6 668.9 BS,IF 15 55.6 64.2 62.4 0 040 14.4 24 020 0.0 3 672.1 BS,IF 16 61.1 68.1 64.7 0 110 13.3 17 050 0.0 1 667.5 IF 17 62.2 72.2 70.8 0 110 10.3 17 110 0.0 0 663.6 IF 18 70.8 72.2 71.5 0 120 10.1 15 110 24.0 1 659.6 IF 19 70.8 72.5 71.8 0 070 10.8 14 070 23.0 1 659.1 20 70.6 74.2 72.9 0 070 9.2 14 060 24.0 2 664.6 IF 21 55.3 76.1 60.4 T 010 16.4 22 020 14.0 7 662.7 SG,IF 22 53.9 62.2 56.4 T 030 15.0 22 010 0.0 6 662.9 SG,IF,BS 23 50.9 58.3 53.4 0 020 23.6 25 020 18.5 2 663.6 BS,IF 24 50.3 54.7 52.2 0 020 24.1 32 030 18.0 1 663.0 BS,IF 25 50.0 57.5 55.3 0 030 20.4 29 020 24.0 2 669.3 BS,IF 26 53.9 59.4 57.8 0 030 20.7 23 030 24.0 3 670.5 BS,IF 27 54.7 59.4 55.3 0 030 19.9 24 020 13.5 2 671.9 BS,IF 28 53.9 58.3 56.8 0 060 10.9 24 010 20.0 2 673.9 BS,IF 29 54.4 60.8 60.0 0 120 11.0 14 060 22.5 1 670.1 IF 30 58.9 65.0 64.2 0 110 10.8 16 120 24.0 0 667.9 AVG 53.8 62.5 58.3 T 030 14.9 32 030 8.3 3 669.7 24th AVG MONTHLY -58.3 PCPN TRACE NR DAYS CLEAR 17 HIGHEST -41.4 ON 12th SUNSHINE 249.5/34.7% PARTLY CLOUDY 13 LOWEST -76.1 ON 21th CLOUDY 00 HIGH PRESSURE 687.4 ON 1st LOW PRESSURE 657.6 ON 19th NET CHANGE IN SNOWSTAKE FIELD: 9.99 SNOWSTAKE DATA NOT AVAILABLE. SUNSHINE DATA BASED ON SUNRISE ON THE 18th. 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 Average Sky Cover changed to reflect data from 00Z through 00Z daily. All Sky Cover changed to Octas. Peak wind speed, peak wind direction, precipitation, sunshine amount, and present wx reported in NZST. Insufficient data to convert these values to UTC. All temperature, wind, and pressure data taken from NCDC data. LCD data originally reported in NZST. Changed Extremes: From To Max T -41.7 -41.4 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 55.1 53.8 Avg Wnd Spd Avg Press 669.7 669.5 Min T 61.9 62.5 Max Press 687.3 687.4 Fastest Wnd MPH Avg T 58.5 58.3 Min Press Changes to Daily Data: Max Temp Day 1 2 6 7 10 11 12 18 19 21 23 24 27 From: 58.3 45.6 64.4 53.9 51.1 47.2 41.7 71.1 71.1 62.2 54.4 51.1 55.0 To: 48.6 44.2 57.5 53.6 48.1 43.6 41.4 70.8 70.8 55.3 50.9 50.3 54.7 Min Temp Day 5 12 14 15 16 19 20 24 25 29 From: 65.0 47.8 58.3 62.8 66.1 72.2 73.3 54.4 55.0 60.6 To: 69.2 53.6 58.6 64.2 68.1 72.5 74.2 54.7 57.5 60.8 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 From: 61.1 52.8 50.3 55.0 59.4 66.9 59.4 55.8 56.1 54.7 49.2 44.7 50.0 55.8 59.2 63.6 To: 56.9 46.1 53.9 56.4 66.0 62.8 54.2 57.5 55.8 50.4 45.8 46.0 55.6 56.3 62.4 64.7 Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 67.2 71.7 71.7 71.9 69.2 58.1 56.4 52.8 52.5 56.7 57.2 56.1 57.5 61.9 To: 70.8 71.5 71.8 72.9 60.4 56.4 53.4 52.2 55.3 57.8 55.3 56.8 60.0 64.2 Number of NCDC observations per day: 4