***Corrected Winter 2010*** LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION YEAR 1985 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 60.8 64.3 62.8 0 070 6.9 15 070 0.0 2 668.4 2 58.7 63.9 61.3 0 060 8.3 13 040 0.0 6 666.4 3 57.7 64.0 59.2 0 020 11.9 17 010 0.0 7 669.8 4 58.0 62.7 58.4 0 030 13.2 23 020 0.0 3 672.2 5 57.4 61.4 58.8 0 020 15.0 22 030 0.0 6 671.4 6 57.9 62.8 59.3 0 040 11.6 24 360 0.0 5 675.7 7 55.7 62.8 60.5 0 070 6.0 10 040 0.0 6 677.7 8 48.5 51.8 52.2 T 010 14.6 21 360 0.0 8 680.9 9 37.3 53.7 46.7 0 350 19.2 31 300 0.0 8 691.5 10 36.5 41.5 39.3 0 310 14.1 21 340 0.0 8 698.8 11 41.2 53.2 46.3 0 030 11.1 23 010 0.0 8 694.6 12 40.7 49.6 46.0 0 030 13.4 22 040 0.0 8 681.6 13 49.6 54.5 52.3 T 030 11.6 17 030 0.0 8 672.9 14 52.9 59.4 56.5 0 030 10.8 22 030 0.0 6 671.4 15 50.0 56.8 54.0 T 350 13.1 20 350 0.0 8 679.6 16 50.0 58.2 54.1 T 350 9.6 21 350 0.0 4 687.6 17 56.9 60.0 58.2 T 070 8.6 15 060 0.0 2 685.0 18 49.7 59.0 55.1 T 030 17.9 28 010 0.0 6 684.4 19 46.3 51.4 48.6 0 010 18.3 33 010 0.0 7 686.1 20 51.4 59.7 55.9 T 040 6.1 15 360 0.0 2 690.7 21 57.3 61.2 59.0 T 050 4.6 10 050 0.0 0 690.4 22 50.7 59.6 57.0 0 060 4.1 7 060 0.0 4 687.9 23 55.3 61.3 59.0 T 060 5.7 13 070 0.0 1 689.3 24 53.7 59.8 56.1 T 030 11.4 22 030 0.0 2 688.2 25 55.2 62.3 58.5 T 060 8.8 15 040 0.0 1 685.8 26 61.1 67.2 62.5 T 070 7.1 12 060 0.0 0 680.0 27 58.4 65.1 62.3 T 080 5.2 12 060 0.0 0 680.2 28 61.2 66.7 64.9 T 070 6.6 12 070 0.0 1 678.1 29 56.0 64.7 58.2 T 010 14.4 20 010 0.0 2 678.9 30 51.9 58.2 55.2 0 010 15.7 23 010 0.0 4 684.1 AVG 52.6 59.2 55.9 T 030 10.8 33 010 0.0 4 681.7 19th AVG MONTHLY -55.9 PCPN TRACE NR DAYS CLEAR 11 HIGHEST -36.5 ON 10th SUNSHINE 0.0/ 0% PARTLY CLOUDY 10 LOWEST -67.2 ON 26th CLOUDY 09 HIGH PRESSURE 699.7 ON 10th LOW PRESSURE 665.9 ON 2nd NET CHANGE IN SNOWSTAKE FIELD: +0.55 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 Old LCD and Corrected LCD. All Sky Cover changed to Octas. 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 hourly observations. LCD data originally reported in NZST. Changed Monthly Averages: (All temps are Minus C) From To From To From To Max T 52.8 52.6 Avg Wnd Spd 10.3 10.8 Avg Press 681.6 681.7 Min T 59.6 59.2 Max Press Fastest Wnd MPH Avg T 56.2 55.9 Min Press Changes to Daily Data: Max Temp Day 1 2 3 4 6 7 8 9 11 13 14 15 From: 57.9 60.8 58.7 57.7 58.0 57.9 48.8 48.5 39.8 41.1 51.3 54.6 To: 60.8 58.7 57.7 58.0 57.9 55.7 48.5 37.3 41.2 49.6 52.9 50.0 Day 17 18 20 21 22 23 25 26 27 28 29 30 From: 53.2 55.2 47.4 54.9 55.7 50.7 54.1 58.7 62.5 58.4 56.4 55.8 To: 56.9 49.7 51.4 57.3 50.7 55.3 55.2 61.1 58.4 61.2 56.0 51.9 Min Temp Day 1 2 4 5 6 8 10 11 12 13 14 15 From: 63.3 64.3 60.8 62.7 60.2 62.1 48.8 47.6 53.2 52.8 57.2 59.4 To: 64.3 63.9 62.7 61.4 62.8 51.8 41.5 53.2 49.6 54.5 59.4 56.8 Day 16 17 18 19 20 22 23 24 25 26 27 28 29 From: 54.0 59.8 60.0 56.3 58.7 60.4 59.7 61.3 60.1 65.9 67.2 65.7 66.7 To: 58.2 60.0 59.0 51.4 59.7 59.6 61.3 59.8 62.3 67.2 65.1 66.7 64.7 Avg Temp Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 From: 60.6 62.5 61.3 59.1 60.0 59.1 60.3 55.4 51.1 42.6 43.7 46.9 46.9 54.2 57.0 To: 62.8 61.3 59.2 58.4 58.8 59.3 60.5 52.2 46.7 39.3 46.3 46.0 52.3 56.5 54.0 Day 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 From: 52.0 56.5 57.6 51.3 53.0 58.0 58.0 55.2 57.5 57.1 62.3 64.8 62.0 61.5 57.0 To: 54.1 58.2 55.1 48.6 55.9 59.0 57.0 59.0 56.1 58.2 62.5 62.3 64.9 58.2 55.2 Number of NZSP observations per day: 24