***Corrected Winter 2011*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1973 MONTH APRIL .... 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 60.3 67.2 62.8 0 060 13.0 16 040 0.0 6 676.2 2 57.0 63.3 59.0 T 030 15.1 17 040 0.0 6 675.8 3 56.4 60.3 58.3 0 030 15.2 18 030 0.0 6 676.8 4 53.6 62.2 58.6 0 050 16.9 22 050 0.0 2 677.8 5 48.6 60.0 51.6 0 020 18.8 24 020 0.0 5 676.4 BS 6 48.9 55.6 53.4 0 020 18.4 23 020 0.0 4 684.4 BS 7 48.1 55.6 50.8 0 030 19.8 24 030 0.0 3 686.3 BS 8 48.3 52.8 50.6 0 020 12.6 24 020 0.0 2 687.2 BS 9 48.3 53.6 51.3 0 060 18.3 23 050 0.0 3 681.1 BS 10 48.3 59.7 56.9 T 030 10.9 24 040 0.0 4 682.5 BS,IC 11 56.4 63.6 60.6 T 070 8.2 13 050 0.0 0 685.8 IC 12 51.1 63.9 54.6 0 020 5.2 11 080 0.0 1 686.1 13 60.3 63.1 61.9 0 020 13.1 17 010 0.0 0 681.9 14 54.7 63.3 58.2 0 110 15.9 18 050 0.0 0 681.7 15 55.0 63.3 61.9 0 060 15.6 21 060 0.0 0 686.2 16 50.9 63.3 58.1 0 110 15.1 20 110 0.0 0 681.4 17 50.9 60.3 58.0 0 120 16.2 22 100 0.0 1 679.4 BS 18 55.3 62.2 59.6 0 110 15.8 23 110 0.0 0 681.1 BS 19 49.2 62.8 51.9 0 030 19.4 24 030 0.0 0 682.1 BS 20 49.4 59.7 55.9 0 030 16.4 23 040 0.0 0 677.3 21 56.1 63.3 61.9 0 100 15.2 19 100 0.0 0 673.4 22 59.7 63.3 60.6 0 030 16.3 19 030 0.0 0 680.4 23 59.4 64.2 63.3 0 070 13.7 18 030 0.0 0 681.2 24 57.0 65.6 61.7 0 110 15.2 19 100 0.0 0 678.8 25 56.7 64.4 61.7 0 070 16.0 22 030 0.0 0 674.8 26 49.2 65.0 53.9 0 030 20.0 24 030 0.0 1 673.4 27 44.2 55.6 47.1 0 030 23.2 31 020 0.0 3 674.0 BS 28 45.6 58.6 56.1 0 030 17.1 29 010 0.0 1 680.1 BS 29 55.3 60.6 57.8 0 050 15.8 22 050 0.0 0 685.2 30 39.2 59.4 46.0 0 030 24.6 32 020 0.0 6 685.1 BS AVG 52.4 61.2 56.8 T 030 15.9 32 020 0.0 2 680.4 30th AVG MONTHLY -56.8 PCPN TRACE NR DAYS CLEAR 20 HIGHEST -39.2 ON 30th SUNSHINE 0.0/ 0% PARTLY CLOUDY 10 LOWEST -67.2 ON 1st CLOUDY 00 HIGH PRESSURE 689.1 ON 21st LOW PRESSURE 671.5 ON 8th NET CHANGE IN SNOWSTAKE FIELD: M SNOWSTAKE DATA NOT AVAILABLE. 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 -44.4 -39.2 Min T Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 52.6 52.4 Avg Wnd Spd 16.2 15.9 Avg Press Min T 59.4 61.2 Max Press Fastest Wnd MPH 31.0 32.0 Avg T 56.0 56.8 Min Press Changes to Daily Data: Max Temp Day 1 2 3 4 5 7 11 13 14 16 17 18 19 22 24 26 From: 62.8 59.4 56.7 57.8 51.1 50.0 56.7 0.0 57.2 57.2 51.1 58.9 50.6 60.0 62.8 55.0 To: 60.3 57.0 56.4 53.6 48.6 48.1 56.4 60.3 54.7 50.9 50.9 55.3 49.2 59.7 57.0 49.2 Day 27 29 30 From: 44.4 57.2 45.6 To: 44.2 55.3 39.2 Min Temp Day 3 9 10 11 13 17 20 23 28 From: 59.4 53.3 58.3 62.8 0.0 59.4 56.7 63.9 57.2 To: 60.3 53.6 59.7 63.6 63.1 60.3 59.7 64.2 58.6 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 From: 65.0 61.4 58.1 60.0 55.6 52.2 52.8 50.6 50.8 53.3 59.7 57.5 60.3 59.2 60.3 55.3 To: 62.8 59.0 58.3 58.6 51.6 53.4 50.8 50.6 51.3 56.9 60.6 54.6 58.2 61.9 58.1 58.0 Day 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 60.6 56.7 53.1 59.7 61.7 61.7 64.2 60.6 60.0 50.0 51.4 58.9 52.5 To: 59.6 51.9 55.9 61.9 60.6 63.3 61.7 61.7 53.9 47.1 56.1 57.8 46.0 Number of NCDC observations per day: 24