Zeke Hausfather

Zeke Hausfather is a climate scientist and writer at the Climate Brink whose coverage focuses on quantifying how fast the planet is warming and what that implies for risk and solutions. His work stands out for blending original temperature and model analysis with clear explanations of uncertainties, attribution and mitigation pathways. He writes as a working researcher, using the same datasets, models and tools he helps develop to interpret climate signals for a broad audience.

Global temperature records and climate model performance

Hausfather’s core subject is the behaviour of global surface temperatures over time and how well climate models capture that history. He helps produce one of the primary global land–ocean temperature records through his work with Berkeley Earth, drawing on many more station observations than conventional datasets. At the Climate Brink he turns this expertise into explainers that track current anomalies and situate new records within the long-term trend, such as detailed posts quantifying the extraordinary warmth of recent summers and the likelihood that specific years will set new global records.

His writing often revisits the performance of past models, including work that evaluated older projections and showed that many were largely accurate once differences in actual versus assumed greenhouse gas emissions are accounted for. In pieces like his article on how the U.S. Department of Energy and Environmental Protection Agency used and misused that research, he dissects institutional interpretations of model skill and clarifies what the underlying science actually supports. He also draws on his peer-reviewed work on climate sensitivity, “hot model” behaviour and emissions scenarios to explain why some models project more warming than others and what that means for planning.

The anchor article on early 20th century warming fits this pattern: he uses historical temperature records and model-based attribution to separate the roles of greenhouse gases, internal variability and other forcings in a key period of the instrumental record.

El Niño, extremes and near-term climate risk

A second strand of his coverage follows the interaction between modes of natural variability such as El Niño and the ongoing trend of human-driven warming.

In articles like “The El Niño cometh” he walks through ensemble model forecasts, highlighting the increased probability of strong or even “super” El Niño events and the implications for global temperatures in the coming year. Archive pieces co-written or timed with major El Niño developments ask whether current events offer a glimpse of the climate a few decades from now, grounding that question in observed anomalies, reanalysis data and projections rather than speculation. He regularly connects these large-scale signals to extremes, including posts on how higher atmospheric water vapour loads translate into more “rocket fuel” for record-breaking rainfall and why new records for extreme rain are a warning sign rather than an outlier. When disasters occur, such as high-profile mountain collapses, his writing carefully distinguishes what formal event attribution can and cannot say while still situating the event in a rapidly warming context.

His New York Times op-ed on climate risk, flagged in a Climate Brink post announcing its publication, extends this focus to the broader risk landscape, arguing that recent progress on emissions does not eliminate deep uncertainty and that future warming outcomes remain tightly tied to mitigation choices.

Dashboards, AI tools and making climate data accessible

Hausfather invests significant effort in building tools that make climate data more usable for non-specialists, then writes about how and why he uses them. He developed an interactive global temperature dashboard using ERA5 reanalysis data so readers can explore daily anomalies, compare current conditions to recent years, and see simple forecasts for the rest of the month based on partial data. The dashboard lives under the Climate Brink banner and is highlighted by Copernicus as an example of open climate data being turned into a practical public tool.

In the Climate Brink re-post introducing the dashboard, he explains the data choices, error bars and forecast logic, illustrating his tendency to foreground methodological detail rather than just headline numbers. In “The AI-Augmented Scientist” he describes how he uses large language models to help visualize unusual temperature events, generate code for graphics and prototype analyses more quickly, while still anchoring the work in established datasets and his own scientific judgment.

Across these pieces he presents himself as an applied data analyst, showing the mechanics of how charts are built and how tools update as new observations arrive, which differentiates his coverage from more typical narrative accounts of climate change.

Mitigation pathways, carbon removal and climate solutions

Alongside diagnosis of warming and risk, Hausfather writes extensively on mitigation scenarios and carbon removal. His professional roles include leading climate research for Frontier, a large advance market commitment aimed at scaling durable carbon removal, and heading climate research at Stripe, which gives him direct exposure to emerging removal technologies and market structures.

He also contributes analysis to Carbon Brief, where he fact-checks developments across climate science and energy and explains mitigation options for a broad audience. His research portfolio covers future emissions pathways, mitigation scenarios compatible with net zero, and the contribution of different sectors and technologies to limiting warming, which informs his written commentary on how quickly emissions must fall to meet temperature goals and what role negative emissions might play. He has co-authored major assessments on emissions narratives, climate sensitivity and the land sector’s contribution to a 1.5°C world, and he brings that perspective into Climate Brink posts on the use of high-end scenarios like RCP8.5 in assessments and policy.

Across his solution-focused writing, he tends to emphasise realistic pathways, the need for rapid emissions cuts, and the potential but limited role of carbon removal, framing these points with quantitative estimates rather than slogans.

Position in the climate media ecosystem

Hausfather’s role in the Climate Brink, which he runs with fellow climate scientist Andrew Dessler, positions him as both a creator of original climate content and a bridge between research and wider media coverage. His Substack and social bios describe him as a “tireless chronicler and commentator on all things climate,” reflecting a sustained output that spans newsletters, dashboards, op-eds and expert interviews. He is a lead author on the IPCC’s Seventh Assessment Report and has contributed to prior assessment reports and the U.S. National Climate Assessment, which underpins his authority when he interprets new data or challenges misreadings of model results. He appears regularly in podcasts and media discussions to explain basic climate modeling concepts, the scale of future warming under different emissions scenarios, and the timelines for reaching net zero or deploying carbon removal at scale. This combination of front-line research, assessment work and prolific explanatory writing means his coverage is both technically grounded and attuned to the questions non-specialists ask about climate change.