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README for Data from: Expanding the Design Space of Stratospheric Aerosol Geoengineering to Include Precipitation-Based Objectives and Explore Tradeoffs
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This file describes the datasets used in the ESD paper:  Lee, W., MacMartin, D., Visioni, D., & Kravitz, B. (2020). Expanding the design space of stratospheric aerosol geoengineering to include precipitation-based objectives and explore trade-offs. Earth Syst. Dynam., 11(4), 1051–1072. https://doi.org/10.5194/esd-11-1051-2020


Contact Information:
Walker Lee, wl644@cornell.edu
Doug MacMartin, dgm224@cornell.edu


All files in the dataset are NetCDF (Network Common Data Form) and can be easily read in common programming languages (python, Matlab, R, NCL, C++, and others).

These data are shared under a Creative Commons Attribution 4.0 International license (CC-BY 4.0, https://creativecommons.org/licenses/by/4.0/). The data are feely available for re-use, but proper attribution must be given to the original authors.

The single files are named as follows:
[Variable name]_Feedback.[Simulation name]_map_monthly.nc
and contains the variable (with a short description) and the spatial and temporal coordinates (i.e. latitude, longitude, and time). All associated coordinates are described in each file.

The variables shared are:

Variable name		dimensions		long name						units
AODVISstdn 		2D-map			Stratospheric aerosol optical depth 550 nm day night	unitless
ICEFRAC 		2D-map			Fraction of sfc area covered by sea-ice			unitless
PRECC 			2D-map			Precipitation rate (convective)				m/s
PRECL                   2D-map                  Precipitation rate (large-scale)                        m/s
TREFHT			2D-map			Reference height temperature				K

Data from files labeled "Precip 1" spans the 2060-2095 period.
Data from files labeled "Precip 3" spans the 2061-2095 period.

Simulation names in the names of files, and bundled zipped folders for download, refer to the following simulations in the EDS paper:

Precip.001 = P0/ITCZ/SSI, or Sim 2 (1 ensemble member)
Precip.003 = T0/ITCZ/SSI, or Sim 1 (1 ensemble member)


Acknowledgments:
We would like to acknowledge high-performance computing support from Cheyenne (doi:10.5065/D6RX99HX) provided by NCAR's Computational and Information Systems Laboratory, sponsored by the National Science Foundation. Support for WL and DM was provided by the National Science Foundation through agreement CBET-1818759. Support for BK was provided in part by the National Sciences Foundation through agreement CBET-1931641, the Indiana University Environmental Resilience Institute, and the Prepared for Environmental Change Grand Challenge initiative.  The Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by Battelle Memorial Institute under contract DE-AC05-76RL01830. The CESM project is supported primarily by the National Science Foundation. This work was supported by the National Center for Atmospheric Research, which is a major facility sponsored by the National Science Foundation under Cooperative Agreement No. 1852977.