***Corrected Winter 2011***

LOCAL CLIMATOLOGICAL DATA HISTORY OF THE AMUNDSEN SCOTT SOUTH POLE STATION

YEAR	1977
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	53.9	63.3	60.2	T	020	 9.2	11	090	0.0	3	682.9
2	53.1	62.8	55.4	T	010	14.1	18	020	0.0	7	686.1	
3	48.1	57.2	50.1	T	350	10.3	26	360	0.0	8	683.8	
4	48.6	54.4	50.7	T	020	 8.1	13	350	0.0	7	683.3
5	47.8	54.9	53.1	T	020	14.7	19	010	0.0	3	674.2
6	52.8	57.7	55.9	T	030	15.8	22	020	0.0	6	672.1	
7	44.4	57.8	48.6	T	360	12.9	22	360	0.0	8	677.6	
8	43.9	52.2	48.0	T	360	10.6	15	330	0.0	6	683.9	
9	46.1	54.4	53.5	T	360	13.8	18	360	0.0	3	682.0	
10	53.3	58.3	57.3	T	040	 8.1	20	010	0.0	2	679.5	
11	56.7	63.3	61.9	T	070	 7.5	12	040	0.0	1	684.5	
12	52.7	67.2	58.1	T	060	 4.9	 9	060	0.0	6	688.8	
13	51.7	61.7	58.7	T	060	 4.3	 8	070	0.0	4	688.7	
14	53.3	62.8	57.7	T	350	 6.6	11	030	0.0	6	686.7	
15	52.2	60.6	53.7	T	360	 6.1	15	360	0.0	6	685.9	
16	52.2	59.4	57.0	T	010	 8.3	17	360	0.0	3	683.5
17	55.0	67.2	65.6	T	110	 5.8	18	360	0.0	1	682.2
18	48.3	67.2	59.9	0	140	 8.9	13	130	0.0	0	677.1	
19	61.1	68.9	65.7	0	100	 6.7	14	130	0.0	1	675.9	
20	59.9	67.2	63.0	T	350	 6.1	 9	110	0.0	2	669.4	
21	54.4	64.4	56.3	T	350	 8.1	13	350	0.0	4	681.2	
22	51.7	58.3	56.3	T	070	 4.9	11	010	0.0	2	690.2	
23	55.0	62.2	59.5	T	060	 7.5	11	060	0.0	0	687.6	
24	56.7	65.5	63.1	T	090	 6.1	12	060	0.0	0	687.0	
25	59.4	66.7	61.6	T	080	 6.3	 9	090	0.0	2	688.7
26	54.9	64.4	59.9	T	040	 7.8	11	080	0.0	2	682.7
27	54.4	63.9	57.6	T	040	 9.2	18	040	0.0	2	678.9
28	57.8	66.6	63.1	T	080	 6.4	13	040	0.0	2	682.9	
29	56.1	67.2	61.3	T	070	 3.7	 9	070	0.0	2	684.2	
30	53.9	65.0	56.0	T	010	 9.7	12	010	0.0	3	676.8	

AVG	53.0	62.1	57.6	T	350	 8.4	26	360	0.0	3	682.3
							3rd
AVG MONTHLY	-57.6		PCPN	TRACE			NR DAYS CLEAR	14
HIGHEST	-43.9	ON 8th		SUNSHINE	0.0/ 0%		PARTLY CLOUDY 	12
LOWEST	-68.9	ON 19th						CLOUDY		04
				HIGH PRESSURE	691.2	ON 22nd
				LOW PRESSURE	667.0	ON 20th

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
Min T

Changed Monthly Averages:  (All temps are Minus C)
	From	To			From	To				From	To
Max T	54.7	53.0	Avg Wnd Spd			Avg Press		682.4	682.3
Min T	61.5	62.1	Max Press	690.2	691.2	Fastest Wnd MPH
Avg T	58.1	57.6	Min Press

Changes to Daily Data:
Max Temp	Day	2	3	4	7	12	14	18	20	21	26	29
		From:	56.7	48.3	50.6	49.4	61.7	55.0	62.8	62.2	55.0	60.0	62.8
		To:	53.1	48.1	48.6	44.4	52.7	53.3	48.3	59.9	54.4	54.9	56.1

Min Temp	Day	5	6	8	10	16	17	22	23	24	28
		From:	52.8	56.1	49.4	57.8	57.2	65.6	57.2	59.4	65.0	63.3
		To:	54.9	57.7	52.2	58.3	59.4	67.2	58.3	62.2	65.5	66.6

Avg Temp	Day	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
		From:	58.6	59.7	52.8	52.5	50.3	54.4	53.6	46.7	50.3	55.6	60.0	64.4	56.7	58.9	56.4	54.7
		To:	60.2	55.4	50.1	50.7	53.1	55.9	48.6	48.0	53.5	57.3	61.9	58.1	58.7	57.7	53.7	57.0
		Day	17	18	19	20	21	22	23	24	25	26	27	28	29	30
		From:	60.3	65.0	65.0	64.7	59.7	54.4	57.2	60.8	63.1	62.2	59.2	60.6	65.0	59.4
		To:	65.6	59.9	65.7	63.0	56.3	56.3	59.5	63.1	61.6	59.9	57.6	63.1	61.3	56.0

Number of NCDC observations per day: 4