Mean-sea-level pressure (contours, solid=low, dashed=high), 10m wind (vectors), 2m temperature (colours), and precipitation (black smudges) from version 2C of the Twentieth Century Reanalysis.
Yellow dots mark the surface pressure observations used in the analysis. Grey fog marks regions where the reconstructed weather is very uncertain (because there are too few local observations).

Created at NERSC (nersc.gov).

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ACRE

Philip Brohan Plus

The international Atmospheric Circulation Reconstructions over the Earth (ACRE) initiative (met-acre.org) is reconstructing weather and climate change over the last 200 years. ACRE coordinates the efforts of professional and amateur researchers…


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The international Atmospheric Circulation Reconstructions over the Earth (ACRE) initiative (met-acre.org) is reconstructing weather and climate change over the last 200 years. ACRE coordinates the efforts of professional and amateur researchers from all over the world to find archived historical weather observations, transcribe them into climate datasets, and assimilate them into atmospheric circulation models - producing an hour-by-hour reconstruction of the state of the atmosphere.

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