ClimAgent: LLM as Agents for Autonomous Open-ended Climate Science Analysis

Hao Wang, Jindong Han, Wei Fan, Hao Liu


Abstract
Climate research is pivotal for mitigating global environmental crises, yet the accelerating volume of multi-scale datasets and the complexity of analytical tools have created significant bottlenecks, constraining scientific discovery to fragmented and labor-intensive workflows. While the emergence Large Language Models (LLMs) offers a transformative paradigm to scale scientific expertise, existing explorations remain largely confined to simple Question-Answering (Q A) tasks. These approaches often oversimplify real-world challenges, neglecting the intricate physical constraints and the data-driven nature required in professional climate science. To bridge this gap, we introduce ClimAgent, a general-purpose autonomous framework designed to execute a wide spectrum of research tasks across diverse climate sub-fields. By integrating a unified tool-use environment with rigorous reasoning protocols, ClimAgent transcends simple retrieval to perform end-to-end modeling and analysis. To foster systematic evaluation, we propose ClimaBench, the first comprehensive benchmark for real-world climate discovery. It encompasses challenging problems spanning 5 distinct task categories derived from professional scenarios between 2000 and 2025. Experiments on ClimaBench demonstrate that ClimAgent significantly outperforms state-of-the-art baselines, achieving a 40.21% improvement over original LLM solutions in solution rigorousness and practicality. Our code are available at https://github.com/usail-hkust/ClimAgent.
Anthology ID:
2026.findings-acl.1067
Volume:
Findings of the Association for Computational Linguistics: ACL 2026
Month:
July
Year:
2026
Address:
San Diego, California, United States
Editors:
Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
Venue:
Findings
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Publisher:
Association for Computational Linguistics
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Pages:
21219–21241
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URL:
https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1067/
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Cite (ACL):
Hao Wang, Jindong Han, Wei Fan, and Hao Liu. 2026. ClimAgent: LLM as Agents for Autonomous Open-ended Climate Science Analysis. In Findings of the Association for Computational Linguistics: ACL 2026, pages 21219–21241, San Diego, California, United States. Association for Computational Linguistics.
Cite (Informal):
ClimAgent: LLM as Agents for Autonomous Open-ended Climate Science Analysis (Wang et al., Findings 2026)
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https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1067.pdf
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