1 / 11

Scottish Links

Scottish Links. Kevin Paulson Rutherford Appleton Laboratory, Chilton Didcot, Oxfordshire, OX11 0QX. Scottish Links Experiment. Investigate the effects of sleet and snow on commercial links. Monitor link attenuations at several hubs around Dundee.

clark
Download Presentation

Scottish Links

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Scottish Links Kevin Paulson Rutherford Appleton Laboratory, Chilton Didcot, Oxfordshire, OX11 0QX FSTG 29/4/2002

  2. Scottish Links Experiment • Investigate the effects of sleet and snow on commercial links. • Monitor link attenuations at several hubs around Dundee. • Observe high attenuation events with St Andrews radar. FSTG 29/4/2002

  3. The Links Taybridge Links Craigowl Links FSTG 29/4/2002

  4. February 7 2002 Overcast and cold with temp. rising from 3 to 6 degrees by afternoon. FSTG 29/4/2002

  5. Taybridge Results 7/2/02 FSTG 29/4/2002

  6. Craigowl Results 7/2/02 FSTG 29/4/2002

  7. March 10 2002 Temperatures between -2 and 1 degree with sleet and snow. FSTG 29/4/2002

  8. Taybridge Results 10/3/02 FSTG 29/4/2002

  9. Craigowl Results 10/3/02 FSTG 29/4/2002

  10. Conclusions • 8 events in the period 1/1/02-21/3/02 where one or more links experience attenuation >A0.01% due to sleet. • Craigowl experiences more sleet events than Taybridge (and both considerably more than Winchester/Thorne Hill) • Many of the extreme attenuation events last much longer than predicted by the RAL fade duration model. • Sometimes extreme attenuation is restricted to a small number of links indicating spatial inhomogeneity in sleet. FSTG 29/4/2002

  11. Attenuation Exceedances Taybridge FSTG 29/4/2002

More Related