Ancient Arabic manuscripts reveal abnormal weather patterns

Modern scientists hope to study global weather patterns with the help of ancient scholars. Using writings from 9th and 10th century Iraq, a team of scientists from the Universidad de Extremadura hope to learn about climate change by comparing ancient and modern data.

From the Physorg article:

"Climate information recovered from these ancient sources mainly refers to extreme events which impacted wider society such as droughts and floods," said lead author Dr Fernando Domínguez-Castro. "However, they also document conditions which were rarely experienced in ancient Baghdad such as hailstorms, the freezing of rivers or even cases of snow."