There's a huge gap between what climate scientists are willing to say privately and what we're willing to say publicly, in terms of how dire a situation we're in. Colleagues, integrity demands we close this gap.

More from Climate change

Thread on snow ratios. The snow ratio, or snow-to-liquid ratio states how many inches of snow, when melted, yields one inch of liquid water. Ratios are usually around 10:1 or 12:1, but can vary from as little as 6:1 or as high as 30:1, or sometimes more. 1/

There's a common misunderstanding that the colder the surface temp is, the higher the snow ratio will be (fluffier snow). This is incorrect. As long is the surface temp is not close to freezing, it really doesn't matter all that much. 2/

As the surface temp gets close to or exceeds freezing, more snow is lost to melting, yielding lower ratios and heavy, wet snow. The same reasoning also applies to temps above the ground; if they exceed freezing, sleet or rain can mix with the snow, dramatically lowering ratios 3/

Much more important is the dendritic growth zone (DGZ), the layer of the atmosphere with temperatures between -12 and -18C. In this layer, snowflakes grow as dendrites, which can easily clump together into aggregates, which contain a lot of air, increasing the ratio 4/

At warmer or colder temps, the flakes grow as plates, columns, or needles, which don't clump together as well and contain less air, lowering the ratio. To make this even more complicated, there's also a dependence on atmospheric humidity. 5/

Ed King
@edking_I

It's (nearly) five years since the Paris Agreement was gaveled through… but was it any good? Tricky question. Based on emissions, temperature data and impacts, no. *But...* (thread)

The team at @SystemIQ_LTD have crunched the numbers & reviewed how far + fast sectors have shifted since 2015. Their take is the global economy could be a decade away from seismic tipping points that see the world move fast towards low carbon.

In 2015, zero-carbon technologies and business models could rarely compete with incumbent carbon-solutions. In 2020, zero-carbon solutions are competitive in sectors representing around 25% of emissions. In 2030 the figure’s looking like 70%.

What does this mean for a COVID-smashed world, where 2021 is shaping up to be a hellish mix of recessions and mass unemployment? Well, the 2020s could see a net increase of 35 million low carbon jobs if governments roll out the right policies + invest wisely.

Can the low carbon acceleration be pinned to Paris? Not entirely, but partly. In 2014 no-one talked of net zero targets. Now 120+ countries either have these plans or are working on them. By mid 2021 the US, China, EU, UK, Japan, Korea, Canada will have these targets.

Daniel Swain
@Weather_West

Thread on very strong inbound CA storm. A cold & clear morning will quickly give way to increasing clouds, NorCal valley rain & snow down to 1,500-2,000 ft (locally lower) later this PM. Current satellite imagery shows this strengthening system off the coast. (1/10) #CAwx

Tonight, a rapidly intensifying cold front will sweep across NorCal. This front will be unusually well defined, for a CA winter storm, and will replace an already cold airmass with...another cold airmass! (2/10) #CAwx

The cold frontal passage is expected to be quite dramatic across NorCal in the overnight hours. A convective "narrow cold frontal rainband" (NCFR) will likely develop, which could bring a period of torrential rain or snow to many areas, as well as possible lightning. (3/10) #CAwx

Extremely heavy precipitation is possible for a 30-60+ minute period when this NCFR feature moves ashore. Over an inch of rain could fall per hour in some spots. This portion of the event poses a high threat of debris flows in/near recently burned areas. (4/10) #CAwx

In addition to torrential rainfall, the cold front/NCFR will be accompanied by very strong wind gusts across much of NorCal. In fact, high-res models are suggesting potential for gusts of 60-70 mph even in lower elevation places. Widespread power outages possible. (5/10) #CAwx

michaelharriot
@michaelharriot

It was a dark and stormy night...

(I’ve always wanted to tweet that) But seriously, there was a tropical storm when a group of people gathered in the woods.

If they were white, we’d call them “founding fathers” but they were slaves who were about to change the world

A thread

Holup. I ain't learned about this in school. What was this??
— Drunk Tweets, Inc - Mask it or Casket (@DrunkTweetsInc) January 1, 2021

Voudou priestess Cecile Fatiman danced with a knife. Then she split a pig and everyone drank the pig’s blood from a wooden bowl while enslaved priest Cutty Boukman prayed:

“The god who created the earth; who created the sun that gives us light. The god who holds up the ocean;

who makes the thunder roar. Our god who has ears to hear. You who are hidden in the clouds, who watch us from where you are. You see all that the white has made us suffer. The white man’s god asks him to commit crimes. But the god within us wants to do good...

It’s He who will direct our arms and bring us the victory. It’s He who will assist us. We all should throw away the image of the white men’s god who is so pitiless. Listen to the voice for liberty that speaks in all our hearts.”

Then , the meeting adjourned & everyone went home.

A week later, on Aug. 21 1791, it began.

In one week, 1800 plantations on the Island of St. Domingue would be burned to the ground and 1,000 white enslavers would be dead.

The shit had finally hit the fan.

$Dave Burton \u274c$

Dave Burton ❌
@ncdave4life

@smarzeli @ianrowley677 @chimera414 @BrknMan @ancistroneura @sueytonius @swcrisis @eloarefab @BailFund_Brawl @IngersolRobert @OscarsWild1 @RuleByLogic @KCTaz @Kenneth72712993 @alshalloway @ClimatePatriot @joetheatheistp @insane_voice @TheDisproof @Ceist8 @BradPKeyes @Fauntleroy1934 @DawnTJ90 @Jamz129 @JsharkJill @Tangomitteckel @joedieseldodge @BadgersNo @fknsavages27 @SimonPearson961 @JoeTheAtheist @CMorrisonEsq @maya_phd @CymaticWave @Schtickery @ClimateDepot @stevenmosher @Willard1951 @Tokyo_Tom @jc_Craze @DanCady @PolAnimalAus @ZombiePiano @SimonMaxfield8 @CrangusShish @Gladfly1 @AtomsksSanakan @leonardjcohen @FrankWi74044551 [1/14] It is very sad that @NatGeo is now publishing such disinformation. The article is lies.

The Earth is greening, thanks to elevated CO2 -- especially in arid

@ianrowley677 @chimera414 @BrknMan @ancistroneura @sueytonius @swcrisis @eloarefab @BailFund_Brawl @IngersolRobert @OscarsWild1 @RuleByLogic @KCTaz @Kenneth72712993 @alshalloway @ClimatePatriot @joetheatheistp @insane_voice @TheDisproof @Ceist8 @BradPKeyes @Fauntleroy1934 @DawnTJ90 @Jamz129 @JsharkJill @Tangomitteckel @joedieseldodge @BadgersNo @fknsavages27 @SimonPearson961 @JoeTheAtheist @CMorrisonEsq @maya_phd @CymaticWave @Schtickery @ClimateDepot @stevenmosher @Willard1951 @Tokyo_Tom @jc_Craze @DanCady @PolAnimalAus @ZombiePiano @SimonMaxfield8 @CrangusShish @Gladfly1 @AtomsksSanakan @leonardjcohen @FrankWi74044551 @NatGeo [2/14] NASA measures it, from

@ianrowley677 @chimera414 @BrknMan @ancistroneura @sueytonius @swcrisis @eloarefab @BailFund_Brawl @IngersolRobert @OscarsWild1 @RuleByLogic @KCTaz @Kenneth72712993 @alshalloway @ClimatePatriot @joetheatheistp @insane_voice @TheDisproof @Ceist8 @BradPKeyes @Fauntleroy1934 @DawnTJ90 @Jamz129 @JsharkJill @Tangomitteckel @joedieseldodge @BadgersNo @fknsavages27 @SimonPearson961 @JoeTheAtheist @CMorrisonEsq @maya_phd @CymaticWave @Schtickery @ClimateDepot @stevenmosher @Willard1951 @Tokyo_Tom @jc_Craze @DanCady @PolAnimalAus @ZombiePiano @SimonMaxfield8 @CrangusShish @Gladfly1 @AtomsksSanakan @leonardjcohen @FrankWi74044551 [3/14] @NatGeo used to be better. In 2009 they reported, "Vast swaths of North Africa are getting noticeably lusher due to warming temperatures, new satellite images show, suggesting a possible boon for people living in the driest part of the

@ianrowley677 @chimera414 @BrknMan @ancistroneura @sueytonius @swcrisis @eloarefab @BailFund_Brawl @IngersolRobert @OscarsWild1 @RuleByLogic @KCTaz @Kenneth72712993 @alshalloway @ClimatePatriot @joetheatheistp @insane_voice @TheDisproof @Ceist8 @BradPKeyes @Fauntleroy1934 @DawnTJ90 @Jamz129 @JsharkJill @Tangomitteckel @joedieseldodge @BadgersNo @fknsavages27 @SimonPearson961 @JoeTheAtheist @CMorrisonEsq @maya_phd @CymaticWave @Schtickery @ClimateDepot @stevenmosher @Willard1951 @Tokyo_Tom @jc_Craze @DanCady @PolAnimalAus @ZombiePiano @SimonMaxfield8 @CrangusShish @Gladfly1 @AtomsksSanakan @leonardjcohen @FrankWi74044551 [4/14] @NewScientist reported the "remarkable environmental turnaround," including a “quite spectacular regeneration of vegetation,” and "a 70 per cent increase in yields of local cereals such as sorghum and millet in one province in recent

@ianrowley677 @chimera414 @BrknMan @ancistroneura @sueytonius @swcrisis @eloarefab @BailFund_Brawl @IngersolRobert @OscarsWild1 @RuleByLogic @KCTaz @Kenneth72712993 @alshalloway @ClimatePatriot @joetheatheistp @insane_voice @TheDisproof @Ceist8 @BradPKeyes @Fauntleroy1934 @DawnTJ90 @Jamz129 @JsharkJill @Tangomitteckel @joedieseldodge @BadgersNo @fknsavages27 @SimonPearson961 @JoeTheAtheist @CMorrisonEsq @maya_phd @CymaticWave @Schtickery @ClimateDepot @stevenmosher @Willard1951 @Tokyo_Tom @jc_Craze @DanCady @PolAnimalAus @ZombiePiano @SimonMaxfield8 @CrangusShish @Gladfly1 @AtomsksSanakan @leonardjcohen @FrankWi74044551 @newscientist [5/14] Note that sorghum & millet are C4 plants. It was once thought that, unlike C3 plants, C4 plants would benefit little from rising CO2 levels. But C4 crops are favored for their drought-hardiness, &eCO2 is especially beneficial under dry

Rising CO2 levels mitigate drought impacts. Elevated CO2 (eCO2) helps plants use water more efficiently, by improving CO2 stomatal conductance relative to transpiration. It's especially helpful in arid regions & during drought. Here's a paper about corn:https://t.co/lZ0wL4Gnvn
— Dave Burton \u274c (@ncdave4life) August 19, 2020