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As an experiment, for at least two months I will be producing soaring
weather forecasts for Great Britain, available daily each morning. These forecasts are based upon techniques which have proved successful in the US for several years now, but Great Britain is a different kettle of fish (and likely difficult to forecast) and the forecast modelling technique used differs somewhat, so forecast usefulness can only be evaluated by those on the spot. I am aware of the soaring forecasts currently being made by Jack Harrison but these are quite different, sort of apples vs. oranges. His forecasts have the advantage of providing easily understood summaries by a human forecaster who can add his experience to the mix, and are provided up to 5 days in advance. My forecasts are only for the current day and are automated, providing maps to be evaluated by the user - but I should emphasize that the maps are mainly of _soaring_ parameters intended to answer questions of interest to a pilot, not simply _meteorological_ parameters which need further interpretation. The advantages of these forecasts are that they are available in the morning (utilizing the latest sounding data taken during the night) and that they are based upon sounding forecasts at 4 km intervals, a level of detail not available from the usual forecasts. Such detail allows use of the eye's pattern recognition ability to evaluate the forecast, rather than having to evaluate data from widely spaced forecast soundings (though of course one can't expect every wiggle they depict to be accurate!). These forecasts are mainly for the meteorology-minded since a single summary number is not provided. And they can require some self-education (though that can't be too hard since over 2000 US pilots actively use them in the US) as individualized assistance is not provided. At first glance the website can seem intimidating since so many parameters are forecast - but most of those are "supplemental" forecasts to be used as necessary and many users are content to look at only the one or two they consider most important, such as the expected lift strength or maximum (dry) thermalling height or cloud base height. The forecast maps themselves are available via http://www.drjack.info/RASP/GREATBRITAIN/index.html Links on that page are provided to brief descriptions of the parameters and to additional reading material. Additional information for first time users is available at http://www.drjack.info/BLIP/INFO/help.html Comments which I will read, and sometimes respond to, can be posted at http://www.drjack.info/cgi-bin/rasp-forum.cgi I am particularly interested in comments on the area covered, since the present forecast area was created ad hoc and can be altered. My intent is to produce soaring weather forecasts which provide a better soaring experience for the weather-interested pilot who wishes to better evaluate soaring conditions. The experience in the US is that such maps have been particularly useful to cross-country soaring pilots, since they allow evaluation of conditions away from the home field. If this experiment is successful, the goal would then be to have these forecast run on a more permanent basis by someone with available resources in Great Britain. If unsuccessful and they end up not being utilized, I'll discontinue them to focus on soaring forecasts elsewhere. "Dr Jack" Glendening |
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