Reconstructing historical weather using old diaries

 

There is a large amount of documented weather information all over the world before instrumental weather records became available. We developed a system that incorporates qualitative data from old diaries into a numerical atmospheric model using a data assimilation technique. We demonstrated the potential to reconstruct historical weather by an experiment using visually observed cloud cover data over Japan.

Ref: (Toride et al., 2017)

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Currently, I am working on reconstructing historical weather using real diaries during the 19th century, and improving the relationship between the description in old diaries and actual atmospheric variables.