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paleoclimate-proxies

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Reconstructing past climates from proxies — ice cores, tree rings, sediments, corals — with dating and calibration discipline.

skills/paleoclimate-proxies/SKILL.md

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## Overview

Before thermometers, nature kept records: gas bubbles in ice, growth rings
in trees, isotopes in shells and sediments. This skill covers the major
paleoclimate proxies, how each is dated and calibrated to climate
variables, and how to combine them into reconstructions without
overstating what a single archive can say.

## When to use

- Reconstructing temperature, rainfall, or CO₂ before the instrumental record
- Evaluating a "warmest in X years" claim against proxy evidence
- Choosing a proxy archive for a region and timescale question
- Reviewing a paleoclimate paper: checking dating, calibration, and uncertainty
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