ClimateSOM: A Visual Analysis Workflow for Climate Ensemble Datasets

TL;DR

ClimateSOM is a visual analysis workflow that uses self-organizing maps and large language models to explore and interpret variability in climate ensemble datasets, aiding climate scientists in understanding projections.

Contribution

This paper introduces ClimateSOM, a novel workflow combining SOMs and LLMs for interactive analysis of climate ensemble data, enhancing pattern recognition and interpretation capabilities.

Findings

Effective visualization of ensemble variability

Successful application to precipitation data over US regions

Positive expert feedback on workflow utility

Abstract

Ensemble datasets are ever more prevalent in various scientific domains. In climate science, ensemble datasets are used to capture variability in projections under plausible future conditions including greenhouse and aerosol emissions. Each ensemble model run produces projections that are fundamentally similar yet meaningfully distinct. Understanding this variability among ensemble model runs and analyzing its magnitude and patterns is a vital task for climate scientists. In this paper, we present ClimateSOM, a visual analysis workflow that leverages a self-organizing map (SOM) and Large Language Models (LLMs) to support interactive exploration and interpretation of climate ensemble datasets. The workflow abstracts climate ensemble model runs - spatiotemporal time series - into a distribution over a 2D space that captures the variability among the ensemble model runs using a SOM. LLMs are integrated to assist in sensemaking of this SOM-defined 2D space, the basis for the visual analysis tasks. In all, ClimateSOM enables users to explore the variability among ensemble model runs, identify patterns, compare and cluster the ensemble model runs. To demonstrate the utility of ClimateSOM, we apply the workflow to an ensemble dataset of precipitation projections over California and the Northwestern United States. Furthermore, we conduct a short evaluation of our LLM integration, and conduct an expert review of the visual workflow and the insights from the case studies with six domain experts to evaluate our approach and its utility.