When Developing Cyclone Melissa was churning off the coast of Haiti, meteorologist Philippe Papin felt certain it was about to escalate to a major tropical system.
Serving as primary meteorologist on duty, he predicted that in just 24 hours the weather system would intensify into a severe hurricane and begin a turn towards the coast of Jamaica. Not a single expert had previously made such a bold prediction for rapid strengthening.
However, Papin had an ace up his sleeve: AI technology in the guise of the tech giant’s new DeepMind hurricane model – released for the initial occasion in June. And, as predicted, Melissa evolved into a system of astonishing strength that tore through Jamaica.
Meteorologists are increasingly leaning hard on Google DeepMind. During 25 October, Papin clarified in his public discussion that the AI tool was a key factor for his certainty: “Roughly 40/50 AI simulation runs show Melissa reaching a most intense hurricane. While I am not ready to predict that strength at this time given track uncertainty, that is still plausible.
“There is a high probability that a phase of quick strengthening is expected as the storm moves slowly over very warm ocean waters which represent the highest oceanic heat content in the whole Atlantic basin.”
The AI model is the pioneer AI model focused on hurricanes, and currently the first to beat standard meteorological experts at their own game. Across all 13 Atlantic storms this season, Google’s model is top-performing – even beating experts on track predictions.
The hurricane ultimately struck in Jamaica at category 5 strength, among the most powerful landfalls recorded in nearly two centuries of record-keeping across the Atlantic basin. Papin’s bold forecast likely gave residents extra time to prepare for the disaster, potentially preserving lives and property.
The AI system operates through spotting patterns that conventional lengthy physics-based prediction systems may miss.
“The AI performs much more quickly than their physics-based cousins, and the computing power is more affordable and time consuming,” said Michael Lowry, a ex meteorologist.
“This season’s events has demonstrated in short order is that the newcomer AI weather models are on par with and, in some cases, superior than the slower traditional forecasting tools we’ve relied upon,” Lowry added.
To be sure, Google DeepMind is an instance of machine learning – a method that has been employed in data-heavy sciences like weather science for a long time – and is distinct from generative AI like ChatGPT.
AI training processes mounds of data and extracts trends from them in a manner that its model only takes a few minutes to generate an answer, and can do so on a desktop computer – in strong contrast to the flagship models that governments have utilized for decades that can require many hours to run and require the largest supercomputers in the world.
Nevertheless, the fact that the AI could outperform earlier top-tier legacy models so quickly is nothing short of amazing to meteorologists who have spent their careers trying to predict the world’s strongest storms.
“I’m impressed,” said James Franklin, a former expert. “The data is sufficient that it’s pretty clear this is not just chance.”
He noted that while the AI is outperforming all competing systems on predicting the trajectory of storms globally this year, like many AI models it sometimes errs on extreme strength predictions inaccurate. It struggled with another storm previously, as it was similarly experiencing rapid intensification to category 5 above the Caribbean.
In the coming offseason, he said he intends to discuss with Google about how it can enhance the DeepMind output even more helpful for forecasters by offering extra internal information they can utilize to evaluate exactly why it is coming up with its conclusions.
“A key concern that nags at me is that although these predictions appear really, really good, the results of the system is essentially a black box,” remarked Franklin.
Historically, no a commercial entity that has produced a top-level forecasting system which allows researchers a peek into its techniques – in contrast to most other models which are offered free to the public in their entirety by the governments that created and operate them.
Google is not alone in adopting artificial intelligence to address challenging weather forecasting problems. The US and European governments are developing their respective AI weather models in the development phase – which have also shown better performance over previous non-AI versions.
The next steps in AI weather forecasts seem to be startup companies tackling formerly tough-to-solve problems such as long-range forecasts and improved early alerts of tornado outbreaks and flash flooding – and they are receiving US government funding to do so. A particular firm, WindBorne Systems, is even launching its proprietary weather balloons to fill the gaps in the national monitoring system.
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