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Members are increasingly searching for resources to design for, and in, a changing climate. Hitherto, there has been a reluctance from ASHRAE to endorse or recommend the use of simulated or modelled future weather data. In these discussions, climate change and urban heat island (UHI) are thought of as future occurrences. We present evidence that these changes have already been occurring. An analysis of the type of climatic information presented in ASHRAE publications suffices to demonstrate this. We will examine measured data to demonstrate the impact of climate change and UHI, and how the two effects usually exacerbate each other.

• 1. Recent Measured Data vs. IPCC Climate Model Predictions: How Do They Match Up?
  Parag Rastogi, Ph.D., Member, arbnco Ltd., Glasgow, United Kingdom
• 2. Recent Trends in ASHRAE Design Conditions and Typical Meteorological Weather Data
  Drury Crawley, Ph.D., BEMP, Fellow ASHRAE, BENTLEY SYSTEMS, Washington, DC
• 3. Recent Trends in Weather Statistics for Design and Annual Calculations
  Yu Huang, BEMP, Member, White Box Technologies, Moraga, CA