edu.ucar.opensky::articles:26751 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T19:01:22.471605 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7h9998m https://doi.org/10.5065/bdr7-wt42 https Related Dataset #1 Simulation data of the DECK, CMIP6 historical, and PMIP4 LGM simulations using the Paleoclimate-Calibrated CESM2 https://doi.org/10.5281/zenodo.8213266 https Related Dataset #2 Assessment of equilibrium climate sensitivity of the Community Earth System Model version 2 through simulation of the Last Glacial Maximum https://doi.org/10.7289/V56971M6 https Related Dataset #3 Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 2.3 (Monthly) https://doi.org/10.5065/D6RX99HX https Related Service #1 Cheyenne: SGI ICE XA Cluster Tropical precipitation woes in the Community Earth System Model version 2 2023-11-16T00:00:00Z publication https://n2t.org/ark:/85065/d7h9998m https://doi.org/10.1029/2023GL104416 Lofverstrom, M. author Zhu, Jiang author UCAR/NCAR - Library publisher The newly developed paleo-climate calibrated Community Earth System Model, version 2 (pCESM2) simulates a more realistic global temperature response to external forcing compared to the standard CESM2. Here we show that the code modifications in pCESM2 result in increased atmospheric convection and a northward shift of the Atlantic and eastern Pacific Intertropical Convergence Zones. These changes are exacerbated under Last Glacial Maximum forcing, resulting in tropical precipitation changes that are inconsistent with both proxy data evidence and simulations with other contemporary models. Similar model-data disagreements are also present in the standard CESM2. Thus, more work is needed to improve the simulated Last Glacial Maximum hydroclimate response in CESM2. We further suggest that well-constrained paleo climates should be given a larger emphasis in model development more broadly, as these climates can help identify issues with model parameterizations under altered forcing and thus improve the fidelity of simulations of past, present, and future climates. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation