Klaus Hasselmann explained how rapid, irregular weather fluctuations can generate slow climate variability. His 1976 Hasselmann stochastic climate model separates fast atmospheric variables from more slowly responding components such as the ocean and cryosphere, retaining the fluctuating forcing that simple time averaging would discard. Slow components integrate that forcing; stabilizing climate feedbacks prevent the variance from growing without bound. This supplies a mechanism for internally generated variability even when the external conditions do not vary.[ref]
Stochastic climate models Part I. Theory by Klaus Hasselmann. Abstract and section 7, separation of timescales, fluctuating forcing and stabilizing feedback
A physicist who developed stochastic climate models and founded the Max Planck Institute for Meteorology in 1975.[ref]
Professional profile of Klaus Hasselmann (mpimet.mpg.de). Klaus Hasselmann and the beginning of climate research: founding directorship and stochastic model
Portrait of Klaus Hasselmann
. Pegy22 (author field on Commons). CC0 1.0, via Wikimedia Commons. Source. Articles by others on the same topic
Klaus Hasselmann is a prominent German oceanographer and climate scientist, known for his significant contributions to the understanding of climate systems and climate change. He was born on October 13, 1931. Hasselmann is particularly recognized for developing models that connect weather and climate, demonstrating how climate change can be linked to specific weather patterns.