1. PROJECT ------------ Title: Unique thermal expansion properties of water key to the formation of sea ice on Earth: model outputs Funding organisation: none 2. DATASET ------------ Description: Outputs from the MIT General Circulation Model (MITgcm) run in an idealized coupled ocean-atmosphere-sea ice configuration. This dataset contains all data necessary to reproduce figures and analysis published in Roquet et al. (2022). It includes outputs from the ocean, atmosphere, sea ice, and land surface components of the MITgcm simulations of the Control simulations and sensitivity. Outputs cover the last 50 years of all simulations after spin-up. Roquet, F., D. Ferreira, R. Caneill, D. Schlesinger, and G. Madec, 2022: Unique thermal expansion properties of water key to the formation of sea ice on Earth. Science Advances. DOI:10.1126/sciadv.abq0793 Cite dataset as: Ferreira, David (2022): Unique thermal expansion properties of water key to the formation of sea ice on Earth: model outputs. University of Reading. Dataset. https://researchdata.reading.ac.uk/id/eprint/394; DOI: https://doi.org/10.17864/1947.000394 Publication Year: 2022 Creator(s): David Ferreira Organisation(s): University of Reading, Department of Meteorology Rights-holder(s): University of Reading 3. TERMS OF USE ----------------- Copyright University of Reading 2022. This dataset is licensed by the rights-holder under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/. 4. CONTENTS ------------ File listing README.txt : this file GridAtm, GridOcn: grid files of the atmosphere and ocean components Ctrl, Lin050, Lin100, Lin125_a/b, Lin150, Lin200, Lin350: directories with outputs from the control simulation (realistic non-linear equation of state) and the sensitivity experiments with the linear equation of state. For the sensitivity experiments, LinXYZ indicates the value of the thermal expansion coeffecient, TEC = X.YZ x 10^{-4} K^{-1}. Lin1.25_a and Lin1.25_b correspond to the 2 phases of the oscillation found for TEC = 1.25 x 10^{-4} K^{-1}. These directories contain subdirectories with outputs for the atmosphere (Atm), ocean (Ocn), sea ice (Ice), carbon cycle (PTr) and land (Lnd). The directory MON contains timeseries (monthly snapshots) of key variables (e.g. global mean temperature). Data are provided in netcdf format (see section 5 for tools to read the data). Description of the variables are given in the "available_diagnostics.log" files. The Atm and Ocn directories contain the STDOUT.* files which summarizes all parameters used in the simulations. available_diagnostics_ocn.txt, available_diagnostics_atm.txt: descriptions of outputs of the MITgcm (including units, location on grid, 2d/3d). Names match those found in the netcdf files. 5. METHOD and PROCESSING -------------------------- All outputs were generated with the MITgcm (http://mitgcm.org/, https://github.com/MITgcm/MITgcm). Versions are indicated in the STDOUT.* files. Outputs are provided in netcdf format and can be read with a variety of software. Subroutines for Matlab and Python to read the MITgcm outputs are available on the MITgcm github repository (https://github.com/MITgcm/MITgcm/tree/master/utils).