This month, the National Oceanographic and Atmospheric Administration gives us a quick lesson reminding us that local weather events can be an inaccurate tool for evaluating the validity of global climate models. Ten days ago, NOAA released figures showing that April 2009 was slightly cooler than average in the United States. Today, however, NOAA released data showing that April 2009 was warmer than average around the world. It was, in fact, remarkably hot, the 5th warmest April ever on record. For that matter, things were warmer than average here in New York State.
Last month, state weather did not predict national climate which did not predict global climate. Always remember that, when people are talking about climate change, scale matters. Global warming is global, not a matter of what you see outside the window on some particular day.