The American Meteorological Society (AMS) issued an Information Statement on Climate Change in August 2012. AMS seeks to update this statement to reflect the advances in understanding and modeling of climate variability and change since.
The intervening period has seen issuance of two prominent reports – the globally oriented Climate Change 2013: The Physical Science Basis – the Working Group I contribution to IPCC-AR5, and the more US-focused 3rd National Climate Assessment from USGCRP in 2014.
There has also been development of new and improved Earth observation data sets, innovative observational analyses, and new climate modeling approaches that can potentially inform the revision that AMS seeks.
Since the previous statement was issued, the community has engaged in intense discussion of the existence and origin of the ‘warming hiatus,’ development and abatement of intense drought conditions over California and their attribution, new observations and studies of the changes in the Arctic, and analyses of the origin and impact of multidecadal variability, among others.
The AMS Information Statement on Climate Change seeks to provide answers to questions such as: How and why climate has changed over the past century? What are the best estimates of future climate change, including uncertainties in not only projections but also the projection tools and methodologies? The information statement will be informed by peer-reviewed scientific literature.