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Staggering acceleration of global warming is underway, driven by a huge planetary energy imbalance, which in turn is traced mainly to our Faustian aerosol bargain. Six months more of the acceleration are still to come. See Measuring Stick - mailchi.mp/caa/global-war…

An impressive study by Wang et al. provides a partial explanation of how the climate system takes up such a large fraction of human-made carbon emissions. There is a long-standing issue of “missing carbon sinks,” despite efforts to fake it. See Good News - mailchi.mp/caa/good-news-…

It’s important to clarify ongoing climate change and implications soon. There is limited time to prepare for actions needed to cool Earth and preserve a bright future. Fortunately, some young people are beginning to grasp the situation. See Groundhog Day - mailchi.mp/caa/groundhog-…

Effective climate policy requires knowledge of aerosol effects on clouds. We had better learn soon with whatever approaches work. Time is running short. Much to be done. See 2024 Projection - mailchi.mp/caa/global-war…

Jump of global temperature in past year is a combination of aerosol-induced warming over a few years and a half-baked El Nino. There is no need for new climate physics to understand the warming. El Nino + next La Nina mean may approach 1.5°C. See Hopium - mailchi.mp/caa/global-war…

Global temperature is now near its peak due to El Nino + aerosol decrease. How far will it fall in the coming La Nina? If El Nino/La Nina average is ~1.5C, given Earth’s energy imbalance, we are now passing thru 1.5C, for practical purposes. See MayRpt - mailchi.mp/caa/comments-o…

Terminations, rapid, transitions from glacial to interglacial periods, are relevant to our ongoing transition to super-interglacial. Chapter 25 of Sophie’s Planet: columbia.edu/~jeh1/Document… Criticisms welcome. See - May30 Sophie’s Planet and Terminations mailchi.mp/caa/sophies-pl…

Good news: young people taking charge and a bit of cooling. Sorry for avoiding X and FB. Making progress, Sophie’s Planet will be finished this year. See June27 - mailchi.mp/caa/the-world-…

Reflections on heat waves, butterflies, and birds. See July 12 - mailchi.mp/caa/reflection…

Please join me today, Mon 12/9, at 07:30 GMT+1 (2:30 pm EST) in a panel discussion in the Hague, the Netherlands, related to the climate proceedings now underway before the International Court of Justice - us06web.zoom.us/j/87505005541 ID: 875 0500 5541

Our new paper, "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?" is published and is available here: tandfonline.com/doi/full/10.10…

A webinar discussing our new paper will take place TODAY, 4 February, at 9 AM Eastern Standard Time, accessible here: us02web.zoom.us/webinar/regist…

Why Earth will not cool off much. See complete paper with SM (tandfonline.com/doi/full/10.10…) and webinar discussion (youtube.com/watch?app=desk…) Also see - February 6 Global Warming Acceleration and Recovery - mailchi.mp/caa/global-war…

Why a complement to IPCC and its cottage industry is needed. See - Feb 12 Global Warming Has Accelerated. Why? What Are the Consequences? mailchi.mp/caa/global-war… Watch our video: drive.google.com/file/d/1dfFcau… Read our paper: tandfonline.com/doi/full/10.10…

High climate sensitivity has consequences that will show up soon and grow later. See - Feb 20 The Acid Test: Global Temperature in 2025 - mailchi.mp/caa/the-acid-t…

The rate of ice melt is one of the key diagnostics needed to assess the likelihood of passing the “point of no return.” See 2 Apr - Global Warming Acceleration: Impact on Sea Ice - mailchi.mp/caa/global-war…

2025 global temperatures are expected to stay at or above 2024’s record levels, reinforcing that climate sensitivity and aerosol forcing have likely been underestimated. See 15 Apr - 2025 Global Temperature - mailchi.mp/caa/2025-globa…

Earth is getting darker, reflecting back to space a decreasing portion of the sunlight incident on Earth. This provides crucial information on cloud changes and climate sensitivity. See - 14 May Large Cloud Feedback Confirms High Climate Sensitivity - mailchi.mp/caa/large-clou…

There is time for a thoughtful view of our fellow creatures and habitat. See 22 May - End of an Era - mailchi.mp/caa/end-of-an-… Find me on Bluesky: @drjamesehansen.bsky.social