Reanalyses find rising humidity in the Arctic but miss fine details

Authors

  • Colin Schultz


Abstract

Direct, reliable observations of atmospheric conditions stretch as far back as the midseventeenth century, with otherwise consistent records being punctuated by periodic updates in methods, practitioners, and observational equipment. To bridge these shifts in technique and technology, scientists develop reanalysis models designed to tie together diverse observations into a coherent picture of the system's evolution. But, like all models or analytical techniques, reanalysis of data sets can suffer from errors or biases. Identifying how the records produced by different reanalyses vary can be a difficult practice, but determining if a cluster of models consistently produces biased results can be even more difficult.