Global soil moisture dynamics: attribution of contributions and their association with GPP.

ABSTRACT: Soil moisture (SM) is central to the global land-atmosphere interaction and is of significant research importance. However, the dynamic structural features of SM remain insufficiently explored. This study utilizes GLDAS-Noah SM data from 1948 to 2024 to develop a collaborative framework for quantifying SM contributions, based on "three-dimensional decomposition + covariance attribution." It decomposes Total Soil Moisture Variability (TSMV) into two major temporal dynamics: long-term trends (Trend) and inter-annual variability (IAV), assessing the contributions of different soil depths, seasonal variations, and temporal dynamics to TSMV, thereby laying the methodological groundwork for analyzing global TSMV structural features. Furthermore, the relationship between SM and the gross primary

SUBMITTER: Li Y 

PROVIDER: S-EPMC12626047 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature