(a) Consider using [SiZer](https://www.tandfonline.com/doi/abs/10.1080/0266476042000270554), which was recently highlighted in [a recent article about Atlantic planktonic decline](https://www.nature.com/articles/s41586-019-1181-8). (b) There's [another worthwhile area of application](https://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-18-0664.1) for your techniques: recurrent and blocking Rossby wave patterns which lock long duration cold and hot spells in the Northern Temperate.