Category: Antarctic Sea Ice Extent

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I came across a calendar tool for [R] (the language I do the programming in) in the package openAir.

With a lot of kludging (the package was designed to visualize air pollution data) I can visualize the Anomaly % for the year 2015. By anomaly % I mean if the mean is 10,000,000 sq km for 1981-2010 and the anomaly is -500,000 then the anomaly % is -5%.

Darkest red days are closest to the mean. Light colors are far below the mean.

 

 

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Arctic has jumped from lowest ever to 7th lowest for day 11.

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After a few days of data problems on NOAA’s side the posts resume.

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UPDATE: Now 3 days.

Every once in a while NOAA doesn’t do a daily data update. Today was one of those days.

You can bookmark the two links below if interested.

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As regular readers of this blog knows, there are two weird spikes in the Antarctic data that the NOAA never corrected.

Since this is the Global Summary, the Antarctic Spikes do matter.

The only value that changed is the Avg Anomaly for 2015 was -0.25 with the spike and -0.26 without the spike.

This is the summary for 2015:

Lowest Minimum 16.766 2006
Highest Minimum 19.16 1979
Lowest day of Minimum 30 2006
Highest day of Minimum 63 1991
Lowest Maximum 25.914 2012
Highest Maximum 28.151 1980
Lowest day of Maximum 178 1979
Highest day of Maximum 322 1992

 

Year	Min	Max	day of Max	day of Min	Avg Anomaly
1979	19.16	27.49	178	38	0.8
1980	18.62	28.151	307	57	0.38
1981	18.248	27.531	291	45	0.36
1982	18.819	27.871	302	42	0.86
1983	18.889	27.918	307	41	0.51
1984	17.79	27.245	316	40	0.14
1985	17.979	27.636	306	50	0.38
1986	18.873	27.023	317	45	0.08
1987	19.064	27.157	317	46	0.46
1988	18.197	27.872	319	45	0.46
1989	18.038	27.536	299	48	0.17
1990	18.407	27.407	294	46	-0.12
1991	18.003	27.088	291	63	0.07
1992	18.012	27.608	322	60	0.29
1993	17.877	27.994	310	57	0.12
1994	18.621	28	309	46	0.56
1995	18.543	27.135	306	46	-0.01
1995	18.543	27.135	306	45	-0.01
1996	17.844	27.505	293	57	0.39
1997	17.705	27.047	310	57	-0.17
1998	18.521	27.603	297	47	0.27
1999	17.983	27.626	295	62	0.23
2000	17.642	26.972	302	49	0.04
2001	18.602	26.748	319	38	0.05
2002	18.123	26.83	297	55	-0.64
2003	18.781	27.105	306	37	0.14
2004	18.341	27.094	316	51	-0.01
2005	17.137	27.383	308	38	-0.62
2006	16.766	27.121	298	30	-0.99
2007	17.238	26.257	308	47	-1.06
2008	18.488	27.312	310	46	0
2009	17.471	26.2	303	53	-0.24
2010	17.467	26.72	313	38	-0.4
2011	16.789	26.173	307	53	-1.24
2012	17.891	25.914	313	53	-0.81
2013	18.295	27.49	306	37	0.2
2014	17.957	27.3	307	43	0.34
2015	17.914	26.473	310	49	-0.25 / -0.26

As regular readers of this blog knows, there are two weird spikes in the Antarctic data that the NOAA never corrected.

I will show both sets of data: With spikes and with spikes averaged away by replacing them with the data from the day before and day after averaged.

This is the summary for 2015 if the spikes are not included:

Lowest Minimum 2.264 1997
Highest Minimum 3.692 2008
Lowest day of Minimum 43 1994
Highest day of Minimum 65 1986
Lowest Maximum 18.027 1986
Highest Maximum 20.201 2014
Lowest day of Maximum 243 1994
Highest day of Maximum 277 1988

 

Year	Min	Max	day of Max	day of Min	Avg Anomaly
1979	2.915	18.368	256	48	0.04
1980	2.527	19.092	267	57	-0.39
1981	2.695	18.86	261	51	-0.21
1982	2.893	18.551	246	52	-0.02
1983	2.847	18.811	263	55	-0.25
1984	2.383	18.378	266	58	-0.2
1985	2.602	18.933	254	50	-0.04
1986	2.954	18.027	261	65	-0.55
1987	3.016	18.524	258	52	-0.24
1988	2.639	18.785	277	55	-0.14
1989	2.723	18.274	266	51	-0.23
1990	2.784	18.379	273	53	-0.24
1991	2.554	18.671	273	58	-0.11
1992	2.492	18.467	255	54	-0.24
1993	2.281	18.71	263	50	-0.23
1994	3.083	18.827	243	43	0.12
1995	3.33	18.736	269	55	0.15
1996	2.597	18.831	267	56	0.13
1997	2.264	18.792	265	58	-0.26
1998	2.772	19.244	258	56	0.08
1999	2.707	18.981	273	51	0.11
2000	2.582	19.159	272	49	0.11
2001	3.441	18.494	271	50	0.02
2002	2.697	18.116	252	51	-0.43
2003	3.626	18.68	268	48	0.32
2004	3.259	19.124	252	51	0.32
2005	2.804	19.295	272	49	0.04
2006	2.487	19.36	264	51	-0.19
2007	2.723	19.086	272	50	0.03
2008	3.692	18.298	247	51	0.6
2009	2.671	19.299	267	53	0.39
2010	2.842	18.998	249	47	0.45
2011	2.319	18.954	266	53	-0.15
2012	3.111	19.478	266	54	0.36
2013	3.679	19.608	274	50	0.87
2014	3.548	20.201	263	52	1.12
2015	3.532	18.874	275	49	0.74

This is the summary for 2015 if the spikes are included:

Lowest Minimum 2.264 1997
Highest Minimum 3.692 2008
Lowest day of Minimum 43 1994
Highest day of Minimum 65 1986
Lowest Maximum 18.027 1986
Highest Maximum 20.723 2015
Lowest day of Maximum 243 1994
Highest day of Maximum 277 1988

Year	Min	Max	day of Max	day of Min	Avg Anomaly
1979	2.915	18.368	256	48	0.04
1980	2.527	19.092	267	57	-0.39
1981	2.695	18.86	261	51	-0.21
1982	2.893	18.551	246	52	-0.02
1983	2.847	18.811	263	55	-0.25
1984	2.383	18.378	266	58	-0.2
1985	2.602	18.933	254	50	-0.04
1986	2.954	18.027	261	65	-0.55
1987	3.016	18.524	258	52	-0.24
1988	2.639	18.785	277	55	-0.14
1989	2.723	18.274	266	51	-0.23
1990	2.784	18.379	273	53	-0.24
1991	2.554	18.671	273	58	-0.11
1992	2.492	18.467	255	54	-0.24
1993	2.281	18.71	263	50	-0.23
1994	3.083	18.827	243	43	0.12
1995	3.33	18.736	269	55	0.15
1996	2.597	18.831	267	56	0.13
1997	2.264	18.792	265	58	-0.26
1998	2.772	19.244	258	56	0.08
1999	2.707	18.981	273	51	0.11
2000	2.582	19.159	272	49	0.11
2001	3.441	18.494	271	50	0.02
2002	2.697	18.116	252	51	-0.43
2003	3.626	18.68	268	48	0.32
2004	3.259	19.124	252	51	0.32
2005	2.804	19.295	272	49	0.04
2006	2.487	19.36	264	51	-0.19
2007	2.723	19.086	272	50	0.03
2008	3.692	18.298	247	51	0.6
2009	2.671	19.299	267	53	0.39
2010	2.842	18.998	249	47	0.45
2011	2.319	18.954	266	53	-0.15
2012	3.111	19.478	266	54	0.36
2013	3.679	19.608	274	50	0.87
2014	3.548	20.201	263	52	1.12
2015	3.532	20.723	266	49	0.74

 

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