One indicator is the trend of increased tidal flooding on the US east coast over the past few decades: https://www.nytimes.com/interactive/2016/09/04/science/g

One indicator is the trend of increased tidal flooding on the US east coast over the past few decades: https://www.nytimes.com/interactive/2016/09/04/science/global-warming-increases-nuisance-flooding.html https://www.nytimes.com/interactive/2016/09/04/science/globa...