U.S. Daily Hydroclimatic Gridded Data at 2-Degree Resolution, 2006-2021

Daily data from 2006 to 2021 provides gridded hydroclimatic variables across the United States at a two-degree spatial resolution. The dataset was generated by Roveen Kumar using Ordinary Kriging on station observations from the United States Climate Reference Network (USCRN). It includes precipitation, relative humidity, near-surface air temperature, soil temperature, and soil moisture, validated against ERA5 reference data.

Use Cases

• Modeling soil moisture dynamics based on daily soil moisture and temperature data.
• Analyzing precipitation patterns and humidity trends across the U.S. based on daily gridded variables.
• Validating regional climate models using the dataset's ERA5 validation metrics.
• Studying long-term hydroclimatic changes from 2006 to 2021 based on the described temporal coverage.

Strengths

• Covers a 16-year time range from 2006 to 2021.
• Includes five key hydroclimatic variables: precipitation, relative humidity, near-surface air temperature, soil temperature, and soil moisture.
• Validation was performed against ERA5 using RMSE, correlation coefficients, and Kolmogorov-Smirnov tests.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The spatial resolution of two degrees is coarse for local-scale analysis.

Provenance

Source

United States Climate Reference Network (USCRN) station observations.

Collection Method

Generated using Ordinary Kriging (Linear, Spherical, Exponential, and Gaussian models).

Time Range

2006 to 2021

Freshness

Last updated 2026-05-09 10:47:50; freshness should be verified.

Geography

Entire United States