The international HAPPI-MIP (Half a degree Additional warming, Prognosis and Projected Impacts - Model Intercomparison Project) initiative  has been launched in response to the announced intent of the IPCC (Intergovernmental Panel on Climate Change) to publish the special report SR1.5 on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty. In addition, HAPPI-Land (HAPPI - Land-use scenario experiment) was initiated to investigate the biogeophysical effects of land-based mitigation in different low emission scenarios.
The HAPPI-MIP and HAPPI-Land data belong to the data protocol of HAPPI-MIP . The file format is NetCDF containing time series of a single variable per file. The meta data model is very similar to that of CMIP5.
The HAPPI-MIP initiative and the model simulations it proposes are described in detail in Mitchell et al., 2017 .
Details and results on the HAPPI-Land initiative are described and discussed in Hirsch et al., 2018 
Each CERA experiment of this project contains the data based on a single model.
 http://www.happimip.org/  http://www.happimip.org/wp-content/uploads/2016/05/HAPPI_request_diagnostics_final.pdf  https://doi.org/10.5194/gmd-10-571-2017  https://doi.org/10.1002/2017EF000744