# Dataset of future-shifted weather files for Canada using climate projections from CMIP6

## TL;DR

This paper introduces a dataset of future-shifted weather files for Canada, based on CMIP6 climate projections, to help assess building energy use under future climate conditions.

## Contribution

A new dataset of future-shifted weather files for Canada using CMIP6 projections and a morphing procedure for energy modeling.

## Key findings

- Future-shifted weather files were created for all CWEC2020 sites in Canada.
- Files incorporate projected changes in temperature, humidity, and pressure under different emissions scenarios.
- The dataset spans five future periods from the 2040s to the 2080s.

## Abstract

Investigating energy use in new building designs or existing structures in Canada is often performed with energy models that incorporate present-day climate information from the Canadian Weather Year for Energy Calculation 2020 (CWEC2020) weather files. Here we present a new dataset of future-shifted versions of these weather files that have been produced at all CWEC2020 sites across Canada, incorporating projections from the latest generation of climate models from CMIP6. These future-shifted files have been generated using a weather file “morphing” procedure applied to adjust hourly time series of selected thermodynamic variables including dry bulb and dew point temperature, relative humidity, and surface pressure. Projected changes used to calculate morphing factors were taken from CMIP6 global climate models following low, medium and high future emissions pathways (SSP1 2.6, SSP2 4.5, SSP5 8.5). Using the projections from each pathway, future-shifted files have been produced for five future periods from the 2040s through the 2080s. These files facilitate the use of energy modelling to understand building performance and guide design choices for infrastructure under future climate change. All of the future-shifted CWEC2020 files are publicly available via the Pacific Climate Impacts Consortium (PCIC) Weather Files Data Portal at https://www.pacificclimate.org/data/weather-files