TMY and fTMY datasets, all in one place
Typical Meteorological Year (TMY) data represent typical weather conditions observed over a specific period at a particular location. TMY data include various weather parameters such as temperature, humidity, wind speed, and solar radiation. This standardized set of information provides designers with expected weather conditions of a location, which are useful for optimizing commercial building performance and reducing the risk of under or over-designing. Under-designing can lead to inadequate heating or cooling during extreme weather conditions, resulting in discomfort for building occupants. Over-designing, on the other hand, can lead to unnecessary costs and energy waste.
Predictus Energy has consolidated TMY and future TMY (fTMY) data for thousands of locations, all in one place. Understanding how typical meteorological years may be expected to shift in the future can help designers optimize energy performance today as well as improving the system's overall sustainability for the years to come. Along with TMY and fTMY data, Predictus has synthesized additional weather-related data that are used by building designers, such as: heating or cooling degree days; ASHRAE design conditions for sizing equipment; historic and future hourly weather files for energy simulation.
Why use climate projections?
Buildings designed today without considering changing climate are vulnerable to adverse performance in the decades to come. Even the most optimistic climate model scenarios indicate a rising temperature trend from today through 2050. Because typical buildings are designed to last approximately 30-50 years before major upgrades, the buildings constructed today will experience altered performance over their service life due to changing climate.
"Weather is an important simulation model input, but the current practice of averaging historical weather records does not take into account anticipated climate-related changes."
— ASHRAE, 2018
