James Edward Hansen

The Nino index (Nino3.4) has just reached Nino-neutral, but global SST (sea surface temperature) has matched the highest level for this date, which was achieved during the last El Nino. Super warming is clear. Look for a global temperature soon of at least +1.7C, even if the "Super" El Nino turns out to be half-baked. The University of Maine Climate Change Institute has a spectacular interactive graphic that they update daily. It is a valuable research and communications tool. Link to graph: climatereanalyzer.org/clim/sst_daily…

El Nino strength is important, but the extraordinary, accelerating, warming of global sea surface temperatures is much more important. See Super El Nino? – mailchi.mp/caa/super-el-n… Also available on Substack: jimehansen.substack.com/p/super-el-nin…

There is a limit on how far we can let climate run away now, if we are to give the next generation an opportunity. See Runaway – mailchi.mp/caa/runaway-cl… Also available on Substack: jimehansen.substack.com/p/runaway-clim…

Science-based policies could successfully limit human-caused climate change, but when political parties are allowed to accept money from special interests, policies are distorted to the point of being ineffective. See Politics: tiny.cc/9f6z001 Also available on Substack: tiny.cc/cf6z001

The presumed upcoming El Nino will help cement and quantify global warming acceleration, showing that 2ºC global warming is likely to be reached in the 2030s, not at midcentury. See Another El Nino Already? - mailchi.mp/caa/another-el… Also available on Substack: jimehansen.substack.com/p/another-el-n…

The chaos in government today has potential to seed huge gains a few years from now; more on that later. For now we must stem disastrous ideas. See Fix Our Forests Fiasco – mailchi.mp/caa/fix-our-fo… Also available on Substack: jimehansen.substack.com/p/fix-our-fore…

It’s asking a lot to expect young people to understand the real climate story. I’m thrilled to learn that many of them may be open-minded mavericks. – mailchi.mp/caa/mavericks Also available on Substack: jimehansen.substack.com/p/mavericks

Three things, all at once, all the time, if you want better understanding and answers sooner – mailchi.mp/caa/three-thin… Also available on Substack: jimehansen.substack.com/p/three-things…

@RARohde @LeonSimons8 @hausfath @e_philalethes Hi Robert, good to hear from you. Reliable data, at best, support global maps back to the 1950s and global mean to ~1880. The 1850-1900 base is manufactured, model-dependent. It's easy to shift base period for the global mean, but 1880-1920 is our earliest data-based base period.

@LeonSimons8 @hausfath @e_philalethes @DrJamesEHansen I could be wrong, but I don't believe NASA GISS itself has ever adopted an 1880-1920 baseline. (Though I think sometimes 1880-1899 or 1880-1910 have popped up.) The 1880-1920 choice appears to have been adopted by Hansen after he retired from GISS.

Let’s see what we can learn from temperature change in the next two years – mailchi.mp/caa/global-tem… Also available on Substack: jimehansen.substack.com/p/global-tempe…

Warning! This colorful chart is censored by IPCC - mailchi.mp/caa/warning-th… Also available on Substack: jimehansen.substack.com/p/warning-this…

I have been notified that the video link to my Helsinki talk does not work for some people. Here's an alternative link for those who prefer a YouTube version: youtu.be/D2abyXGvELI

Climate talk in Helsinki at request of young people standing up for their future - mailchi.mp/caa/a-climate-… Also available on Substack: jimehansen.substack.com/p/a-climate-ta… Video: drive.google.com/file/d/1NGOp39…

Predictably, soon, most young people will reject extremist views. Nature’s Corridor (draft Chapter 1 of Sophie’s Planet) could help heal wounds of the past. mailchi.mp/caa/natures-co… Also available on Substack: jimehansen.substack.com/p/natures-corr…

Draft Chapter 10 of Sophie’s Planet, Venus Syndrome & Runaway Climate (mailchi.mp/caa/chapter-10…) is an introduction (also available on Substack: jimehansen.substack.com/p/chapter-10-t…). Quantitative analysis with insights on climate physics will follow.

We, and young people, need help from people who understand the essence of climate science. See Forest versus Trees - columbia.edu/~jeh1/mailings… or its abbreviation - mailchi.mp/caa/seeing-the… also available on my Substack - jimehansen.substack.com/p/seeing-the-f…

Draft Preface for Sophie’s Planet. Criticisms welcome. See 17 July - Sophie’s Planet - mailchi.mp/caa/sophies-pl…

@danmiller999 @RichardC62309 @LeonSimons8 @MakikoSato6 @Harry_Stevens @ClimateBen @CopernicusECMWF @gunnarmy @piersforster @OceanTerra @tugberksamur Short time scales, with high variability, are less relevant to the acceleration issue than decadal change. On decadal time scales we can say EEI has doubled from 0.6 to 1.2 W/m2. That also avoids bickering with each bump or valley, but recent data are also interesting, for sure.

@danmiller999 @RichardC62309 @LeonSimons8 @MakikoSato6 @Harry_Stevens @ClimateBen @CopernicusECMWF @gunnarmy @piersforster @OceanTerra @tugberksamur Of course I meant 220 per minute (not second). A minute is a better unit for people to relate to, I think.

NASA CERES satellites provide the most important data in the world. With another month of data, both Absorbed Solar Radiation and Outgoing Longwave Radiation have reached the highest levels in observed history. Using a 4-year average to reduce 'noise' from natural variability: