This #NewYear we must get serious about climate change. A big obstacle: our brains.

Current risks are vastly different from our ancestors, but our brains are wired the same. Knowing the science behind decision-making helps us better talk about climate threats & spark action. 1/

A brilliant talk that punctures current discourse on climate ambition in Scotland, setting out what's really needed, by @KevinClimate for @ScotClimateCA

📽️ https://t.co/i02FtSkJT8 📽️

Well worth watching. Otherwise, here's a summary thread 👇
1/10

Want scientific assessment of what Scotland should do to achieve Paris Agreement temperature targets? Look to carbon budgets. See that a failure to rapidly reduce emissions will eat up the carbon budget in just a few years, leaving impossible burdens for future generations. 2/10

Are UK emissions down 45% in 30 years? Not when including emissions from aviation & shipping, and imports & exports – then they are only down 10%. Over three decades, we have had reductions of less than 0.5% per year. 3/10

Scotland’s average per person consumption emissions are still double the global average. Scotland’s consumption emissions have not meaningfully reduced in the last 20 years… 4/10

Principles of global equity and justice mean that Scotland’s fair slice of the global carbon budget is just a few hundred million tonnes of CO2, which is less than ten years of Scotland’s emissions at current levels. 5/10

Just as no amount of flat temperature data would dissuade the climate cult, so no amount of flat (or even negative!) data on mask effectiveness will shake the faith of the Church of Covid. Beautiful Theories cannot be disproven by mere information.

The "Covid emergency" will never be over. It will mutate and seek out new missions when this particular virus threat abates, repurposing its funding and clinging to its power. They're already talking up the "next pandemic" and how we must forever remain at DEFCON 2 to be ready.

Masks are now a visible and tangible symbol of an entire agenda. Its champions will use every means possible to force you to wear them forever, including corporate pressure, their new favorite tool. Expect commercial mask requirements to linger, especially big corporations.

True believers, meanwhile, will wear their masks with grim determination and scowl ostentatiously at everyone who refuses to join them. It's a new virtue signal that will not go away any time soon. Mask scolding is a quick, easy, heady power rush.

All the while, studies will keep rolling out that masks don't help, and might even hurt. That was fairly common medical knowledge before the pandemic began, but it was aggressively suppressed when masks became a political symbol, and a totem for people desperate to DO SOMETHING.

#AirPollution, measured by annual PM2.5--particles finer than a human hair--reduced in bigger cities such as Delhi & Varanasi but increased in smaller cities such as Fatehabad & Moradabad, finds a @CSEINDIA analysis of 26 cities. Follow the thread for insights:

In many cities in the upper Indo-Gangetic plains, avg PM2.5 levels were above 2019 levels. #AirPollution in Fatehabad, in northern Haryana, deteriorated the most, with PM2.5 levels increasing 35% from 2019

The %age of PM2.5 in the coarser PM10--which determines air toxicity--was in the high 40s in Oct & remained so in Nov, averaging 55% in Amritsar, 48% in Chandigarh & 53% in Patna. It reached 64% in Amritsar, 69% in Chandigarh & 62% in Patna during #Diwali2020

#AirPollution reduced the most in Sirsa, 40km from Fatehabad, with a 44% lower avg PM2.5 2020 level vs 2019. This massive variation can’t be attributed to meteorology & has to do with local factors such as stubble burning, Avikal Somvanshi, CSE prog mgr, said in a press release

PM2.5 avg in Nov 2020 was 310% higher in Fatehabad, 104% in Agra and 57% in Kaithal, compared to November 2019

It's #FigureFriday, so let's chat about my favorite subject: color palettes 🎨 for climate science visualization! (1/12)

First, why is it important? Put simply: a beautiful figure can communicate your results more effectively than text. It can make a figure more understandable to a public audience. So it is worth it to put care into your figure design. (2/12)

First, if you're plotting up climate model data, especially anomalies, I highly recommend Cynthia Brewer's palettes on ColorBrewer. BrBG is my go-to for precip anomalies, and RdBu is a natural for temperature. (3/12)

The sequential palettes are also great if you've got data going in one direction. Here's the Brewer "blues" at work for a figure showing LGM T change. (4/12)

But what about line graphs? If you are paleoclimatologist like me, you are probably plotting a bunch of squiggly lines. For this, I suggest designing a palette for your *entire paper* ahead on time, and then plot stuff in this palette in every figure. (5/12)