Historical Reanalysis: What, How, and Why?

Citeable URL: https://scholar.colorado.edu/concern/articles/b8515p25d

Abstract

Historical reanalyses combine observations of past weather with simulations from modern numerical weather prediction models to provide a consistent, global history of the weather. Recently, a new reanalysis was released that allows observations of the ocean to impact the atmosphere and vice versa. “CERA‐20C: A Coupled Reanalysis of the Twentieth Century” by P. Laloyaux et al. (2018, https://doi.org/10.1029/2018MS001273 ) describes the first coupled centennial reanalysis, thereby providing more balanced estimates of the ocean‐atmosphere system and allowing for a broader range of studies of the entire Earth system. Results suggest that similar methods could also be leveraged to improve modern weather forecasts. Historical reanalyses can bridge the gap between climate and weather by providing a century‐long history of the weather The first coupled reanalysis of the twentieth century was recently released with promising results

Creator