Is there a way to obtain real-time METAR data? I know that METAR data are available at hourly intervals from the US National Oceanic and Atmospheric Administration (see e.g. the report for Karpathos Airport, Greece ).  However, I would have thought that at the age of the internet it would have been possible to obtain (near) real-time data regarding an airport's weather.  Is such a service available?  Is there a better (more frequently updated) internet-accessible source for global METAR data than NOAA?
You might know this already, but if you want to get an AWOS/ASOS report minute by minute, you can call most of the automated sites. In the US the phone number is listed in the A/FD.