On Wed, 2006-04-19 at 21:20 -0600, Ron Jensen wrote: > On Tue, 2006-04-18 at 20:14 -0400, Ampere K. Hardraade wrote: > > On Wednesday 19 April 2006 01:21, John Wojnaroski wrote: > > > A change that large (13 knots!!) is a major wind shear. > > > > > > Might it make sense to provide some sort of filtering or extrapolation > > > between stations to moderate such extreme changes > > > > > > Regards > > > John W. > > > > I also find it extremely annoying. > > > > This also relates to the "why does my aircraft jerk suddenly" question that > > we > > get occasionly. Some people like to think that it is some sort of > > turbulence, but the not-very-well-thought-out weather simulation routine is > > the most likely suspect. > > > > As John said, instead of relying on just one set of data from a single > > station, it might make sense to take data from all the surrounding stations > > and perform some extrapolation. > > > > Ampere > > Or perhaps perform an interpolation over several seconds when > updating/changing the weather? > > The approach to my favorite airport (KHIF runway 14) passes over another > airport (KODG) with metar weather. As a result I almost always see a > major weather shift on very short final. > > Ron
I have captured the metar strings when I fly from the default runway from KHIF passing over KODG (as a guess). Total flighttime was only a matter or minutes in a b1900d. 2006/04/24 17:55 KHIF 241755Z 07014G22KT 7SM FEW030 BKN060 BKN100 08/M02 A2996 RMK SLP133 ALSTG ESTMD SLP ESTMD WR// P DRY 51003 2006/04/24 17:53 KOGD 241753Z 33005KT 10SM SCT050 09/01 A3000 RMK AO2 RAB1655E04 SLP139 P0000 60001 T00940011 10100 20056 51013 2006/04/24 17:55 KHIF 241755Z 07014G22KT 7SM FEW030 BKN060 BKN100 08/M02 A2996 RMK SLP133 ALSTG ESTMD SLP ESTMD WR// P DRY 51003 The weather changes were very sudden with the aircraft jerking as the plane cross weather "zone boundaries". Regards George ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
