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#1483009 - 28/12/2018 22:32 Radar-Satellite differences around Newcastle
belairjo Offline
Cloud Gazer

Registered: 20/11/2010
Posts: 6
Loc: Newcastle NSW
Hi everyone,
I've been wondering for some years now, I know that particulate matter in the atmosphere and physical objects including insects and ships can appear on the radar. However, I'm curious as to what we are observing when the images on the radar actually look like they are forming a system, with a deeper centre? These are not water vapour, as they don't appear on the corresponding satellite image, as in the screenshot of tonight's radar and satellite, below. (hope the image displays).

Thank you! smile

[img:center]https://photos.app.goo.gl/oLVoosLS8XxvWWKr9[/img]
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#1483010 - 28/12/2018 22:46 Re: Radar-Satellite differences around Newcastle [Re: belairjo]
Kino Offline
Weatherzone Addict

Registered: 10/08/2017
Posts: 3444
Loc: Wollongong, NSW, Aus
If you look at each radar under ‘other info’ you’ll see that it’s ‘sea clutter’ caused by strong sea breezes, maritime moisture which is denser and picks up the radar beam and choppy large seas.

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#1483011 - 28/12/2018 22:54 Re: Radar-Satellite differences around Newcastle [Re: belairjo]
Mega Offline
Meteorological Motor Mouth

Registered: 03/02/2003
Posts: 7859
Loc: Maryborough, Wide Bay, QLD
It is exactly what Kino says, and the most often cause of this is when there's a strong low-level inversion (just above the surface) which causes the radar beam to bend back towards the ground.

Originally Posted By: BoM
The radar may sometimes detect faint echoes from non-precipitation targets such as aircraft, areas of smoke/ash from large fires, swarms of insects, flocks of birds or even the surface (when unusual atmospheric conditions bend the radar beam back down to the surface!). Permanent echoes are created when the radar beam reflects off ground features and buildings, normally within about twenty kilometres of the radar site, but mountain ranges further away can sometimes generate permanent echoes.

Check the radar site information to see if your nearby radar image is affected by any interference.


http://www.bom.gov.au/australia/radar/about/radarfaq.shtml

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#1483019 - 29/12/2018 07:12 Re: Radar-Satellite differences around Newcastle [Re: Kino]
belairjo Offline
Cloud Gazer

Registered: 20/11/2010
Posts: 6
Loc: Newcastle NSW
Ok, interesting. Thank you smile
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#1483020 - 29/12/2018 07:15 Re: Radar-Satellite differences around Newcastle [Re: Kino]
belairjo Offline
Cloud Gazer

Registered: 20/11/2010
Posts: 6
Loc: Newcastle NSW
Ok, great, very interesting, thank you. smile
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#1485761 - 17/01/2019 13:39 Re: Radar-Satellite differences around Newcastle [Re: belairjo]
J Pabo Offline
Weather Freak

Registered: 12/10/2012
Posts: 431
Loc: Clydesdale NSW
Don't forget about the amount of coal dust in the air in the Hunter Valley, it may do some strange things with that as well.

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#1487140 - 26/01/2019 14:00 Re: Radar-Satellite differences around Newcastle [Re: J Pabo]
belairjo Offline
Cloud Gazer

Registered: 20/11/2010
Posts: 6
Loc: Newcastle NSW
That's what I was thinking! As well as other pollutants in the area
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