Trend prediction, anomaly detection, perturbation, noises and signals where data is found https://archive.ics.uci.edu/ml/datasets/PM2.5+Data+of+Five+Chinese+Cities#
where is the original paper on line https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016JD024877
time series data sets https://archive.ics.uci.edu/ml/datasets.html?format=&task=reg&att=&area=&numAtt=&numIns=&type=ts&sort=nameUp&view=table