NOAA/WDS Paleoclimatology - Lake Masoko, Tanzania 45000 Year Magnetic Susceptibility Data

A 45,000-year high-resolution sedimentary record from Lake Masoko in Tanzania shows the climate in this part of East Africa to have been characterized by a short and less severe dry season during the Last Glacial Maximum. Moisture and lake-level proxies, pollen assemblages and magnetic susceptibility, indicate that rainfall in the Masoko area was strongly controlled by low-latitude insolation (i.e., precessional forcing). Such observations contrast with the climatic patterns previously reconstructed in East Africa for the last glacial. Indeed, widespread dry conditions are generally observed and are attributed to the predominant control of high latitude glacial forcing over insolation forcing on the tropical hydrology. However, during the Younger Dryas cold event, out of phase with regional insolation behaviour, wetter conditions prevailed in this area, suggesting that the rainfall belt over Africa was probably shifted to the South, bringing moisture to the southernmost tropics.

本存档的古气候学研究数据集可由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）下属的国家环境信息中心（National Centers for Environmental Information, NCEI）提供，该中心依托古气候学世界数据服务（World Data Service for Paleoclimatology, WDS）平台发布相关数据。该数据集对应的NCEI研究类型为湖泊类。数据集涵盖古湖沼学（paleolimnology）相关参数，地理覆盖区域为非洲东部坦桑尼亚境内。时间覆盖范围为距今（before present, BP）45258至-51个公历纪年。如需了解参数与研究地点的详细信息，请查阅元数据（metadata）文档。使用本数据集时，请引用本研究。