Monthly Archives: December 2014

Solar cycles since 1865

The following graph shows the yearly and monthly SSN averages (sunspot numbers) for the solar cycles since 1865, using data of the WDC-SILSO of the Royal Observatory of Belgium, Brussels. WDC-SILSO web-site: http://www.sidc.be/silso/datafiles data file used in the graph: http://www.sidc.be/silso/DATA/dayssn.datContinue reading

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New spike in Antarctic Ice Extent – Dec 18, 2014

The very warm PDO of the last ~2 years is the main cause of the strong oscillations of the Antarctic ice extent, from the quite stable previous state of positive anomalies since 2012. The increasing anomalies should return after the … Continue reading

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Step change in 1995 or reversal of trends after the huge ENSO of 1998-2001?

posted: https://stevengoddard.wordpress.com/2015/08/10/greenland-melt-season-is-over/#comment-535279 I have no proof but it looks like the El Nino (EN) and the PDO have somewhat complementary effects on climate. EN seems to correlate with sudden increases in tropospheric temperatures, which then plunge into the opposite direction … Continue reading

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UK aa-index from 1868 to Nov 15, 2014

The graph below shows the Geomagnetic AA-index recorded by the UK Solar System Data Centre from 1868 to present. The link to the UK Solar System Data Centre is: http://www.wdc.rl.ac.uk/Help/aa.html The data retrieval form is at the following link http://www.wdc.rl.ac.uk/cgi-bin/wdcc1/secure/geophysical_parameters.plContinue reading

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