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Lamb circulation types for the northern hemisphere derived from historical CMIP simulations and reanalysis data

2021
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Dataset Description

This dataset contains 6-hourly instantaneous categorial data of the Lamb circulation type (Lamb 1972) on a 2.5 degrees longitude-latitude grid covering the entire northern hemisphere extratropics between 30ºN and 70ºN for the period 1979-2005. These "Lamb catalogues" were calculated for the historical experiments of 46 distinct GCMs from the Coupled Model Intercomparison Project phase 5 and 6 and two distinct reanalyses (ERA-Interim and JRA-55). For 12 out of 46 GCMs, 72 additional runs are provided to explore the role of internal model variability. For more information, please refer to the following article: Brands, S. (2021): A circulation-based performance atlas of the CMIP5 and 6 models for regional climate studies in the northern hemisphere. Geoscientific Model Development Discussions, gmd-2020-418 or contact: swen.brands@gmail.com Reference: Lamb, H.: British Isles Weather types and a register of daily sequence of circulation patterns, 1861-1971, Geophysical Memoir, 116, 85pp., HMSO, 1972. CAUTION: If unpacked, this dataset occupies 93 GB of your local disk space. Update information: Version 2 of this archive includes a .txt file containing the "source" attributes stored in the netCDF files obtained from ESGF. This attribute provides details about the individual component models within the coupled model configurations used in CMIP5 and 6.

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