VK2KRR TROPOSPHERIC DUCT INFORMATION
This page is the location where you can find Tropospheric Ducting information that has been researched at Station VK2KRR. Much has been removed and is now only stored in my head.
Current Tropospheric Observations - 4th Jan 2009
The troposphere status has been moved back to POOR. Current conditions are not very favourable. There has been no rainfall inland. There are lots of low pressure troughs causing disturbed weather. Winds are high from NE.
Current Tropospheric Observations - 6th Dec 2008
Well the tropospheric conditions have improved slightly overall and I have indicated the Tropospheric status as good on my website front page. Everything is not quite so dead and a little easier to get through to distant locations. Towards the end of October there was an opening to Esperance WA. Will keep u posted.
Current Tropospheric Observations - October 2008
The current Tropospheric status is extremely poor. The worst I have ever seen. The conditions are also gradually getting worse and worse with less and less rainfall that we are getting. This is producing a low moisture content in the troposphere. One of the main factors influencing tropospheric ducting is the humidity. And with the much reduced evaporation from across the inland its causing a much reduced level and incidence of good propagation across the SE inland areas. Its interesting to be able to see the effects of climate change like this, but it really is a pain.
Very much related is the weather systems and how they are moving across the country. A major problem currently is the stalling of the weather caused by the formation of low pressure troughs inland, usually on the west side of the great dividing ranges. When these troughs are forming, they can sometimes sit there for days, doing nothing but creating very hot weather, mostly with little moisture being dropped, although they often build thunderstorms. Because the troughs just sit there, the weather is often stalled, or goes stale. With tropospheric ducting, what is required is a regular flow of high pressure systems followed by strong cold fronts. This usually dumps good rainfall, and it also drags up air from the coastal areas, which is air from the SW. This air is usually quite moist. In comparison, with low troughs around the air is usually pulled down from the interior which is mostly very dry. Unless pulled in from a tropical cyclone.
There is nothing we can do except wait and see what happens.