DOI: 10.5281/zenodo.3268527
title: Idealized orbital extreme GCM simulations with EC-Earth-2-2

description: This repository contains monthly mean output from the EC-Earth-2-2 orbital extreme simulations. The experiment details are described in the papers given as references. Daily or 12-hourly output (too large to place in this repository) can be obtained from Joyce Bosmans. For the PMIP3 simulations daily output is included, see below.

*** Orbital extreme precession and obliquity experiments ***<br>
Four simulations were performed: precession minimum and maximum (Pmin and Pmax) as well as obliquity maximum and minimum (Omax and Omin). The numbers in the file names each represent a variable according to the ECMWF 128 grib table, see e.g. https://apps.ecmwf.int/codes/grib/param-db. The qv, qdv, dqv and dqdv files represent the (anomalous) moisture transport as described in Bosmans et al. 2015, Climate dynamics.

References:<br>
Bosmans, J. H. C. (2014). A model perspective on orbital forcing of monsoons and Mediterranean climate using EC-Earth. UU Depts. of Physical Geography and Earth Sciences.<br>
Bosmans, J. H. C., Drijfhout, S. S., Tuenter, E., Hilgen, F. J., & Lourens, L. J. (2015). Response of the North African summer monsoon to precession and obliquity forcings in the EC-Earth GCM. Climate dynamics, 44(1-2), 279-297.<br>
Bosmans, J. H. C., Hilgen, F. J., Tuenter, E., & Lourens, L. J. (2015). Obliquity forcing of low-latitude climate. Climate of the Past, 11(10), 1335-1346.<br>
Bosmans, J. H. C., Drijfhout, S. S., Tuenter, E., Hilgen, F. J., Lourens, L. J., & Rohling, E. J. (2015). Precession and obliquity forcing of the freshwater budget over the Mediterranean. Quaternary Science Reviews, 123, 16-30.<br>
Bosmans, J. H. C., Erb, M. P., Dolan, A. M., Drijfhout, S. S., Tuenter, E., Hilgen, F. J., Edge, D., Pope, J.O. & Lourens, L. J. (2018). Response of the Asian summer monsoons to idealized precession and obliquity forcing in a set of GCMs. Quaternary Science Reviews, 188, 121-135.

<br>
*** Mid-Holocene and Control PMIP3 experiments ***<br>
Output from the Mid-Holocene and the control (pre-industrial) simulation is available through the CMIP5 / PMIP3 database. See for instance https://wiki.lsce.ipsl.fr/pmip3/doku.php/pmip3:database:access. If you use the IPSL ESGF node you should get to the following website (it may require signing up for a log-in but it should be easy and free): https://esgf-node.ipsl.upmc.fr/projects/esgf-ipsl/.<br>
On that website, click CMIP5 under 'Search Data'. Then on the left, under 'Model', select 'EC-Earth-2-2'. If you then click 'Search' in the upper middle of the page, you can further select the PI and MH simulations ('Experiment') and variables ('variable long name' is rather useful).

Reference:<br>
Bosmans, J. H. C., Drijfhout, S. S., Tuenter, E., Lourens, L. J., Hilgen, F. J., & Weber, S. L. (2012). Monsoonal response to mid-holocene orbital forcing in a high resolution GCM. Climate of the Past, 8(2), 723-740.

Contact:<br>
Joyce.Bosmans@ru.nl

Acknowledgements:<br>
These model simulations were performed during Joyce Bosmans' PhD research, funded by an Utrecht University `Focus en Massa' grant and partly performed at the Royal Netherlands Meteorological Institute (KNMI), with support from ECMWF.