This is the Narrative, while the Data says otherwise as discussed in the Villages Weather Club. The poor farming practices caused the "dust" while the ocean heating cycles, called the AMO (Atlantic Multi-Decadal Oscillation) and the PDO (Pacific Decadal Oscillation), caused the "heat." Both the AMO and PDO reached maximum strength during this period -- just like they are now -- but the PDO is weaker this time which is why it was hotter back then.
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