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I posted this to Bubblews writing site, now gone, a couple of years ago. Since then, 2014 was a record warm year and then 2015 was another record. And February 2016 was the record hottest month …
There is virtually universal acceptance of global warming among scientists and scientific organisations and that man is almost certainly the cause of much or most of it. The deniers are likely to be concerned about business costs or perhaps have religious convictions. They also like to single out individual studies they think use less than robust methods, but it doesn’t change the overall situation.
NASA data shows that 2005 was a global temperature record and 2010 was another record. The years 2011 and 2012 were considerably higher than anything before 1998. In fact, global temperatures each year since 1995 have been higher than anything we saw before 1995 (and going back several thousand years at least). Short term levelling off occurs, e.g. first half of the 1980s, first half of the 1990s, and arguably in some recent years, but the overall trend is upwards.
The CSIRO (Australia) states: “All measurements of the climate system indicate the long term warming trend is continuing. It is inappropriate to use short term data sets to determine long term trends.” http://www.csiro.au/en/Outcomes/Climate/Has-Global-Warming-Stopped.aspx
Annual levels of carbon emissions continue to increase each year. Temperatures are up. Extreme weather events are becoming more frequent and more severe. Deforestation continues. Glacier thickness is diminishing at a greater rate each year. The oceans are rising and their temperatures are increasing faster than the atmosphere.
NASA states: “Ninety-seven percent of climate scientists agree that climate-warming trends over the past century are very likely due to human activities, and most of the leading scientific organizations worldwide have issued public statements endorsing this position.” http://climate.nasa.gov/scientific-consensus
This is followed by statements by a number of leading scientific bodies saying that climate is changing and it’s largely due to human activity. Further down the page is a link to 200 scientific organisations around the world who have concluded that “climate change has been caused by human action”. The CSIRO is included. Here’s the link: http://opr.ca.gov/s_listoforganizations.php
Does anyone know of any national or international scientific body that rejects man-made global warming? I think the last one was the American Association of Petroleum Geologists, which moved from rejection to non-committal in 2007. There are still a handful of others who are non-committal, solely geology groups, I believe, although I think most geology groups now concur with man-made global warming.
There are of course some individual scientists who don’t concur with man-made global warming. Most or all seem to cop a fair bit of flak from colleagues.
It’s interesting that some of the deniers link temperature change to solar activity, but if anything, solar activity has fallen slightly since about 1980.