Public data openness, government intervention and carbon productivity: Based on the data of 278 cities from 2006 to 2021

Based on panel data from 278 prefecture‐level cities in China from 2006 to 2021, this study constructed a multi‐period difference‐in‐difference model to empirically test the impact of the launch of public data open platforms on regional carbon productivity. Empirical evidence shows that the launch of public data open platforms can significantly improve carbon productivity. Public data openness mainly promotes carbon productivity through information effects, resource allocation effects, and green management effects. In terms of heterogeneity, public data openness can promote green transformation in cities with high marketization, “two control zones” cities, and resource‐based cities better. Further research shows that government intervention plays a “quantitative change leads to qualitative change” role in the impact of information effects on carbon productivity, and a “positive U ‐shaped” non‐linear role in the impact of human resource allocation on carbon productivity.