Hey... Citation was requested... I provided.
A citation was requested, but you did not provide any citation worthy of consideration.
No idea to whom the website belongs.
It doesn't matter to whom the website belongs. What matters is whether the citation is either to a recognised (eg ISI listed) peer reviewed journal appropriate to the subject matter, or to some similar source of data carrying due authority and credibility. I mean a citation to someone's slashdot comment, for instance, would hardly be admissible would it?
Right this moment - the global warming appears to have leveled-off. These are simply facts... no parlor tricks here.
Just for a quick check throw the yearly anomalies (here's the GISSTEMP data) into R and see if the slope is flat. Here ... I'll make it easy for you to get stared (but do improve on this and double check my numbers for the likely transcription error %-) ) :
year <- c(1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013)
anom <- c(33, 46, 62, 41, 41, 53, 62, 61, 52, 67, 60, 63, 50, 60, 67, 55, 58, 61)
Then plot it and draw a line of fit. (For interest you can check the correlation using cor(year, anom).)
fit <- lm(anom ~ year)
Does that even look flat to you?!
Now given that this is part of a curve which is showing an unequivocal rise over the last 50 years, let alone the entire record, please devise a test to demonstrate that these 18 years show any significant "levelling off" of the long-term trend. And then get back to me with the code. Hell no, get back to the scientific community, with your code ... fame awaits you!
The real question you ought to ask however, is what relevance so short a period (15, 16, 17 or even 18 years) has to data which is not only extremely noisy, but is known to be subject to multi-decadal cycles? If someone asks you to look at climate data over a period of less than at least half a century ... grab your wallet tightly!
Facts? No parlor tricks? Having examined the data for yourself, do you still believe that?