If so the practical differences in resolution and forecasting detail makes that sort of claim/comparison rather questionable, IMO.
Posts made by WXcycles
RE: NOAA is about to make some big changes to its global weather model
RE: Windy Customized Graphics - Version 3
I've constructed two new Copernicus pollution forecasting replacement overlays:
Air quality NO2 [no2] - The standard version of the air quality overlay has some typical problems (which seem to affect most standard windy pollution overlays) namely that it's strongly non-linear and the representation is highly distorted in that it dramatically over emphasizes the very low-levels of pollution, whilst limiting or cutting-off the visual detail with respect to the highest levels of pollution. It's a strange way to construct an overlay as it will implicitly strongly bias the forecast information, which will lead to incorrect perception of the forecast hazard level. To rectify this I've made completely linear the display below 10µg/m³. The rest of the replacement overlay is not equally linear to this, but this is done to cut down on the complexity of the resulting overlay setting (and due to some other implicit range limitations within this overlay). It now shows things in their correct proportions with a minimum of visual distortion. So although this new overlay appears to show less emphasis it is in fact showing the forecast pollution levels in the linearly correct relative proportions, both at the low-end level whilst also making clear where serious pollution problem-areas are actually located. The standard Windy overlay looks positively 'bloated' in comparison simply because it's showing the forecast information strongly out of the correct relative proportions and thus will distort a casual user's perception of where the real air-quality hazards exist.
This new Air Quality setting is available here:
Example of Air Quality overlay:
The very unhealthy air-quality in the heart of China is simply disgusting.
The other new overlay is ...
Aerosol [aod550] - This overlay was much more straight forward as the standard version had fewer problems with it. I've ensured a low visual distortion exists within a linear overlay depiction below 1AOD (it's still linear above 1AOD, but with a different linear increment to reduce the complexity of the shading). Plus I've changed the colors and increments to better display were the real problem areas are located and their relative proportions and detail.
The new Aerosol setting is here:
Examples of Aerosol
In summary, both of these new overlays are easier to read or assimilate at a glance to develop a correct sense of the pollution proportions and their relative hazard level.
I'm still developing a PM2.5 replacement overlay which will be much more complicated due to the range scale of the information within it.
I love the isolines but rarely use them, simply because their opacity can not be controlled, and I find them too 'busy' due to their opaqueness. Would love to be able to control their opacity in the same way we currently can with respect to the wind particle effect's "contrast" slider. Same applies to the wave particle opacity/contrast, which are also too bold and solid looking.
Visual display bug in the standard Windy Ozone overlay.
There is a significant visual display bug within the standard Windy Ozone overlay which is used to display the Copernicus Ozone forecast.
Please see these two comments which I made today:
Example of this display bug.
The nature of the visual code setting problem is this:
RE: Windy Customized Graphics - Version 3
And within the very next model run the standard Windy Ozone overlay problem that I pointed out above has actually appeared.
This is my new custom Ozone overlay setting as referred to above:
And this is the way the standard Windy ozone overlay depicts the same forecast:
Sharp edged, block color, no visual details or structures visible within the area affected. The entire southern winter ozone depletion area will look like that as it begins to develop - very ugly - within what is otherwise one of Windy's better standard overlays.
I'm going to report this as a display bug within the standard Windy Ozone overlay setting.
This bug can be easily remedied via using a standard setting more like this one:
This alternate 'standard' Windy setting removes the display bug entirely and this is what it looks like:
This is the simplified setting being used for those 'debugged' images:
RE: Windy Customized Graphics - Version 3
I've created a new ozone overlay based on the existing Windy overlay for the new Copernicus ozone forecasting.
Firstly, the "Ozone Hole" phenomena is temporary and seasonal. It appears each southern winter over Antarctica, and it usually begins to form during June, then breaks up again (fills in completely) by about the end of October or early November/ The 'hole' (ozone depletion) peaks at around late August or early Septemper. This 'Hole' of ozone depletion is only now beginning to form (at time of this posting, on June 12th, 2019) over the Southern Ocean as is shown in the forecast images given below.
However, there's a significant problem with the initial standard Windy overlay for this Copernicus data's display, which will become very apparent as the ozone depletion level falls below 218 DU, which it's currently close to doing, and will do so during the coming weeks. The problem is due to a flaw in the standard overlay setting:
As the 218 DU depletion level is crossed there will be a sudden change in the shading which will become very apparent with the display of an 'edge' to this drop in ozone. It will be a sharp change that is unsightly, with almost no contrast or detail visible within the hole as it deepens and develops below 218 DU. In other words, the standard setting will create a heavily biased representation of the hole as it begins to develop minus almost any interior detail, as it will be almost a uniform color from below 218 DU.
Now why would anyone want to do that? One might want to do it if for some reason you wanted to make the hole's depletion look larger, more discrete, and more dire or bloated than it really is - surely not!
This new custom ozone overlay replacement removes those serious depiction problems altogether. It's a linear overlay while the standard overlay is not linear below 220 DU (and that's where linearity and detail as the most necessary but is absent) but it is at least linear above 220 DU.
The new setting is here:
This is an abridged Legend for this new setting which blends these colors from the increments given:
Note that the lowest DU bright (red) level is set to 80. That's done because it's close to but still just below the lowest observed historical ozone depletion levels. In recent years the ozone level falls to only about 130 to 120 DU each year. As the depletion is becoming established a bit later this year the total depletion level achieved in 2019 may be fairly mild.
These are the Ozone Hole colors that will appear as the hole deepens (down towards about 120 DU buy late August or early September):
Examples of both the standard and new setting
Significant bug in the video animation feature
Affects Win10 (v1803) + Firefox 67.0
I can make a video within Firefox but when I press "Publish & Save" the interface keeps playing the displayed video on the publish/save screen but otherwise locks the browser functions and I can not even make a screenshot of it, nor open any other pages on the internet.
It does not complete the "Publish and Save" online and thus does not let go of the browser, it just freezes on the Publish and Save screen.
However, Firefox does allow me to save the video locally to HDD, before I have to close the browser to get back my internet connection. And the saved video works fine (but no means currently to upload it to a thread).
But the publishing has not taken place.
At a minimum it needs to let go of the browser after creating videos.
At the moment the video animation feature can only be regarded as not usable within Firefox.
RE: First 4cast indications of Winter arriving in Australia
New snowfall in time for the beginning of Winter.
Temperature at ground level.
Temperature at 10,000 ft.
Pressure and wind flow.
RE: Disable particle animation but show wind direction
Not a bug.
The performance is proportional to the number of particles being displayed and their length. You can get better graphics performance and efficiency via doing the following and still see the wind direction indications: