Learning Continuous Regional Temperature Fields with Lead-Time and Resolution Queries
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Computer Science > Machine Learning
arXiv:2608.25823 (cs)
[Submitted on 26 Aug 2026]
Title:Learning Continuous Regional Temperature Fields with Lead-Time and Resolution Queries
View a PDF of the paper titled Learning Continuous Regional Temperature Fields with Lead-Time and Resolution Queries, by Chunlei Shi and 6 other authors
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Abstract:Accurate regional near-surface temperature forecasting is fundamental to short-range weather services and downstream risk assessment. Existing deep learning-based regional forecasters commonly produce a fixed set of future frames on a prescribed grid, limiting their use when forecast products must be evaluated at query-dependent lead times or display resolutions. To overcome these fixed-output constraints, we formulate regional T2M forecasting as query-conditioned continuous spatiotemporal temperature field evaluation and propose the Continuous Spatiotemporal Temperature Forecaster (CSTF), a neural field that turns forecast lead time and output resolution into explicit queries when evaluating 2-m temperature (T2M). Specifically, CSTF first encodes multivariable ERA5 histories into latent meteorological states and then decodes T2M as a coordinate-based field. Accordingly, spatial location, forecast lead time, and output resolution are introduced as queries, enabling standard hourly forecasts, intermediate lead-time diagnostics, and resolution-controllable outputs within a unified field-evaluation framework. Furthermore, to maintain coherence across flexible field queries, we design spatial-gradient, temporal-difference, and scale-consistency objectives that regularize regional thermal structures, lead-wise evolution, and cross-resolution agreement. Experiments on the Southeast China 0-6 h ERA5-Land benchmark demonstrate that CSTF achieves the best aggregate deterministic skill, including a 17.0 percent reduction in Bias, with global-scope diagnostics further illustrating flexible lead-time and resolution-controllable inference.
| Comments: | 16 pages, 15 figures |
| Subjects: | Machine Learning (cs.LG); Multimedia (cs.MM) |
| Cite as: | arXiv:2608.25823 [cs.LG] |
| (or arXiv:2608.25823v1 [cs.LG] for this version) | |
| https://doi.org/10.48550/arXiv.2608.25823
arXiv-issued DOI via DataCite (pending registration)
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View a PDF of the paper titled Learning Continuous Regional Temperature Fields with Lead-Time and Resolution Queries, by Chunlei Shi and 6 other authors
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