Viewed from space, Earth has darkened significantly over the last 20y; satellite data show a roughly 2% reduction in reflected sunlight. This has led to an increase in Earth's already rising energy imbalance due to CO2 emissions. No wonder global heating has been accelerating. Data from NASA CERES courtesy of @LeonSimons8

Scientists should not be stunned by this September's heat.
It has been waiting to happen for several years as Earth's energy imbalance has steadily risen. The end of a 6y La Niña has shown us the result and the coming El Niño will be a terrible shock.
theguardian.com/environment/20… All of this has been evident in data collected by the NASA CERES satellite cluster and NOAA's Argo ocean sensors, and jointly reported by these agencies. But the received wisdom among climate modellers has been "no acceleration in warming" 👇

Nice one! But bear in mind warming is currently also driven by the recent (since ~2010) and ongoing fall in anthropogenic SOx emissions which has roughly doubled the rate of recent warming.

https://twitter.com/MichaelEMann/status/1672970836267921410

@MichaelEMann I supported your tweet and referred to SOx because I have confidence in the paper by Leon Simons with Jim Hansen and others, and because it tallies with my unpublished work. I think there is a healthy debate to be had here, so I'll ignore your shaft about climate twitter.

Bizarre outcome from #COP27. The parties agreed to a loss and damage fund but did not agree to take genuine action to keep within 1.5°C global temperature rise. The result: loss and damage costs will _inevitably_ come to exceed the ability of ANY group of countries to pay them Either the parties still do not grasp the enormity of the disaster ahead of them.
Or the promise is an empty one to be cynically discarded in the light of events.
Or there is a genuine recognition that a sea-change is coming this year in the politics of climate mitigation.

Earth is now so far out of equilibrium (at around 1.1°C global mean surface temperature rise) that it is rapidly moving into a state hostile to existing human settlement of the planet. At this temperature, realistic projected costs are off the scale. 1.5°C impacts are unthinkable

https://twitter.com/NickCowern/status/1304690746000277504

Are we going to allow this ongoing disintegration of the physical basis of our civilisation, or use the tools we possess to stop all anthropogenic greenhouse gas emissions? That is clearly the only realistic economic course. It needs to done and dusted in the next 10-20 years.

Highly significant that the two wealthy western countries with the worst problems of social inequality and deprivation - the US and UK - have accounted for nearly half of all global COVID-19 deaths to date. I've been asked what evidence I've used to infer that this apparent correlation is "highly significant". Well, here is part of the answer. It's up-to-the-minute information that is directly relevant to the epidemiology of COVID-19.

1/ Stunning insights from the NHS symptom-reporting app. It shows a dramatic decrease in live symptomatic cases, starting on 1st April, just 8 days after the UK lockdown began. 2/ The % decrease is vastly greater than the slight decrease in hospital admissions over the same period.
Why? Here's my proposed explanation: (THREAD)