@korina oh and sorry, one more suggestion before I forget. Not sure if this deserves a separate thread but it would also be extremely useful if there was an optional setting where alerts extend out to 7 or 10 days.
I know accuracy is lower at that type of range but if it was available as an option that could be turned on or off by premium or more advanced users (while keeping the default alerts to 5 days unless the user forces a change) and adding a disclaimer that skill will be lower, I think it would be a great addition.
As both Radar and Rain data layers are rasters, I'm not sure that rendering them together would be useful on UI map.
Radar data: real time observations in [Now-12h..Now], with validity step a couple of minutes
Rain data: forecasts in [Now..Now+10d], with validity steps 1 hour
thus these two data layers couldn't be contemporary (excepting maybe every full hour and only in the past)
Generally speaking, overlay two data layers is great when when a vector data layer (e.g. pressure isolines) is rendered over a raster data layer (e.g. Wind in color shading mode).
When you overlay two raster data layers, you have to disable the layer on the top in order to see the layer on the bottom. Or well to play a lot with new transparency color of each of the layers, which is not trivial (as both of them have blue palettes in this very case)...
ppm means part per million
ppb means part per billion (and ppbv is just specifying by volume)
1 ppm = 1000 ppb
0.5 ppm = 500 ppb
Generally for gases ppm is expressed in volume and your standards are probably in ppm by volume. But you must check it.
Good afternoon! I am trying to understand what CO in PPBV means when applied to the norms in my country. We have:
rural areas - 332 ppm
small towns - 409 ppm
Big cities - 511 ppm.
now in my city 500 ppbv, if believe the map this is a serious excess, вut how to convert PPBV to ppm?
But when converted to ppm, it turns out that it is 0.5 ppm. Where is the error? Please help me to understand