If you live in europe, please check in with your elderly neighbours. Hot temperatures can be deadly for old people
What a horrendous color map. The true anarchy in this post is the cartographers use of hue.
Exactly what I was thinking. There are 3 different off-white colors that indicate vastly different temperature variants. This map is incredibly ambiguous. Which white zones are -8° below average, roughly the same as average, or 13° above average?
The neighbouring colors are different though, so since it's not going to jump from +10 to -8 you can unequivocally tell. Honestly I think I hate this less than having 8 shades of slightly different red
Like I don't have time to get into it cus I'm at work, but their use of hue is a non-function the color space.
Context clues
I get it,it is still interpreatable. but still a poor colorbar choice.
Do you honestly believe that someone like Joe Rogan could actually understand a graph with this much ambiguity?
If comprehension by Joe Rogan is the standard I think we might as well just give up now.
I might be the only one who doesn’t mind the color scheme. For the temperature range on the map, the only colors that don’t fit into the typical blue-to-red gradient are the green for really cold, which makes the coldest anomalies really pop, and the white for really hot. I get the complaints about white being used for both normal average temperature and for extreme heat, but it’s easy to tell which is which by the neighboring colors, and it almost looks as if France got so hot that it got a third degree burn, which chars the flesh, nerves included, and no longer feels like anything - thus insensate white.
So MAYBE, and I'm pulling this out of my ass with no background here, but expectation is temperature doesn't jump, but flows as a gradient. Using France as the start, we've white fading to dark greys then reds, which is the hottest of the three white possibilities. As going hotter then that gets pink again, the top end is white in France. We then decrease down the scale until we get those. green pockets. Light green/white touching green would signify the lower of the three white temps. Not a great map, but perhaps it's an understood practice with the field. After all, how do you convert a quantitative scale into qualitative data. You can't really just number everything (people have shit attention spans and they'll gloss over immediately. Anybody who's delivered technical data to management can attest to that lol) Color works well for that, but has a limited useful spectrum. Getting too specific in a single spectrum muddies the graphic (what's the exact color over Lisbon here? This kinda salmony guy? So 8? Or closer to 9?)
So there is a lot of work on this in color theory, and you can go deep into this.. Here are a few chapters on the matter: https://slcc.pressbooks.pub/maps/chapter/9-2/ , https://courses.ems.psu.edu/geog486/node/876 , and this part in particular https://courses.ems.psu.edu/geog486/node/877
Basically, their use of brightness within hue bins makes this a non-function. Notice how its gets whiter closer to 0 and closer to 13. If two values of Y can get plugged into a function and they both return 0 for the expected X term, thats a non-function.
Temperature, or rather, difference in temperature from expected, which is whats being plotted here, is about divergence from normal.
To fix this map, pick a divergent color scheme, center 0, then create bins at either a specific interval or at quantile intervals.
Something like this: https://colorbrewer2.org/#type=diverging&scheme=RdYlBu&n=11
That is absolutely brutal. I really hope people are finding ways to escape the heat.
Separately, this visualization is bad in a way I have never seen before: a scale of pink to dark red, where dark red actually represents 2 completely different numbers!
There seems to be three different values for white.
And some of those green spots are damn close to using it.
The real anarchy is the mapmakers use of hue.
Many just can't escape it, for many reasons. People are dying, and this will only become more and more common and even worse. We only see the short term effects now too, it'll be so much worse after some years when the long term effects become clear. Crops dying, water shortages, infrastructure damage etc.
Warm summer? Pfft. It's the coolest summer for the rest of our lives!
Let's go from white to red, then when it gets hotter back to white followed by red
...so is northeastern France -8, 0, or +13? What a fucking stupid color scale
Deviation to the average temperature. So its 13 K above the average. Or in other words around 42-44°C
Edit: oh you were complaining about the colormap? Yeah its super shit
The color scale is definitely... a choice but it is not ambiguous. There is only one "path" that goes red, then black, then white.
Wtf did the map burn a hole in France?
it was too hot. France has evaporated.
we should stop global warming before we lose a place we care about
Not only are the colours bad, but the numbers are too? How is a max of 18 in summer worrying? We are way above those numbers.
That's variation from the average. It could certainly have been presented better.
That's not the temperature. That's the degree to which the temperature is strange.
While yes, a 14c deviation from average temperatures is fucking insane, so is this map. The scale is cooked.
Possibly the worst color scale I've ever seen on a chart
Europe needs to normalize air conditioning. I'll never forget the most miserable summer of my life was in germany. Summer gets hot there just like most other places, but in Europe, domiciles don't have AC 🥵
This will probably start to change if this is now the reality but at least historically the reason Europe didn't have air conditioning was it wasn't worth it for the 4 days of the year that it would be used.
The other reason being that houses won't design to be air conditioned, we don't have ducted heating so if I bought an air conditioner and had it installed in a room it would air condition that room, if I wanted air conditioning in my house I would have to have a unit fitted in each room, that's going to get expensive. Alternatively I could buy this £15 fan from Lidl.
The graph stops at 18°C, that's the temperature it should be not the temperature that it is. Also why does it have two whites, white is apparently both zero and 13, which is bizarre because it's definitely hotter than 13 everywhere in Europe right now and probably in Iceland as well. This map makes no sense.
I believe the colors denote how many degrees above/below average the temp deviates.
The scale is "temperature anomaly" so this is deviation from the norm, not the temperature itself
Sorry but you're reading this all wrong
so what is the unit? because it's a hell of a lot warmer than 18C. Difference from... what historical average?
it says 2m temperature anomaly and if it got 18 degrees C hotter outside in two minutes i think i'd just accept death. i must be misreading something.
I think the 2m is for temperatures taken two meters off the ground. What the data range for the average is though, impossible to tell.
Where else could i cross-post this?
Somewhere they post horrendously bad data color choices
A better climate change map can be posted on
Amongst others
Hunh. I'm betting that's the first time Le Mans has had something so massively impactful in common w/ Laredo, TX. 🫢
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