Timothy Walker is the American historian who reads the climate in the logbooks of the Portuguese Navy

Meteored Portugal8 September 2026 at 07:21

Timothy Walker is an American historian who analyzes old logbooks at the Naval Historical Archives, in Lisbon, housed in the old building of the National Ropery. The researcher spends hours deciphering ancient handwriting, yellowed pages, and annotations made by Portuguese Navy officers who crossed oceans more than 200 years ago.

Timothy Walker coordinates a scientific project that brings together Portuguese and American researchers in a major investigation to reconstruct climate patterns between the 18th and 20th centuries from the logbooks. The goal is to transform old nautical records into climate data.

The ancient nautical observations reveal atmospheric patterns that help decipher climate evolution and anticipate current challenges. Each logbook is described as a piece of a global puzzle that can help understand today's world.

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Timothy Walker is the American historian who reads the climate in the logbooks of the Portuguese Navy

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