Description
The authors used organic C and N concentrations found in a sediment core obtained off the coast of India in the northeastern Arabian Sea (21.8°N, 68°E) as proxies for surface productivity and monsoonal intensity. Their results indicated that the intensity of the Indian monsoon decreased during the Little Ice Age, but increased during the Medieval Warm Period (~ AD 1050-1300). In addition, they found a strong coupling between the biogenic proxies and reconstructed total solar irradiance during the last millennium that was suggestive of a solar control on the intensity of the Indian monsoon and likely the MWP and LIA as well.