Hi @chris
The Meteorologist responsible for creating New Zealand’s new simulation weather files has followed the recommendations in the ASHRAE 2013 and 2020 processes to produce the ddy information WITHIN the TMY files. It was not part of his brief to produce them separately. https://www.building.govt.nz/getting-started/climate-change-work-programme/resources/weather-files-aotearoa-new-zealand
I am looking at generating ddy files for LBT purposes from these TMY format files.
There are 18 locations with TMY3 files
There are also morphed versions of these representing: "3 different Intergovernmental Panel on Climate Change (IPPC) Shared Socioeconomic Pathways (SSP) and their timeframes:
- M1: representing SSP1-2.6 for 2040 with an approximate mean temperature increase of 0.5°C from present day (2024), or 1.5°C above pre-industrial climate
- M2: representing SSP2-4.5 for 2050 with an approximate mean temperature increase of 1.0°C from present day (2024), or 2.0°C above pre-industrial climate
- M3: representing SSP3-7.0 for 2070 with an approximate mean temperature increase of 2.0°C from present day (2024), or 3.0°C above pre-industrial climate."
18 Design Summer years (constructing following the processes in the CIBSE technical memorandum: TM59 ‘Design methodology for the assessment of overheating risk in homes’ PLUS their 3 Morphed climate change versions
Extracting the DDY data from these into separate ddy files is the plan, as I assume that the LBT create ddy from the TMY uses the data in the TMY to generate the stats?