Yang, K., and J. Zhang, 2017: Evaluation of reanalysis datasets against observational soil temperature data over China. Climate Dynamics: 1-21. doi:10.1007/s00382-017-3610-4
What they did?
They evaluated 4 reanalysis datasets, ERA-Interim/Land, MERRA-2, NCEP-CFSR, GLDAS-2.0, with a focus on 40 cm soil layer.
Spatial distribution of soil temperature in summer and winter.
Spatial distribution of linear trend in summer and winter.
Soil temperature memory in summer and winter.
Fig.12 Soil temperature memory in SUMMER
Fig.13 Soil temperature memory in WINTER