Long-Term Nitrogen Flux Grid For The Contiguous United States

gTREND-Nitrogen provides annual nitrogen flux and surplus estimates at a 250-meter grid scale for the contiguous United States from 1930 to 2017. The dataset combines county-scale data with gridded land use and population data to quantify major nitrogen inputs and outputs. It was created by Shuyu Y Chang and published on figshare.

Use Cases

• Modeling spatial patterns of nitrogen surplus from fertilizer, manure, and atmospheric deposition inputs across the 250-m grid.
• Analyzing long-term trends in biological nitrogen fixation and crop uptake outputs over the 87-year period.
• Assessing the impact of human waste indicators on regional nitrogen mass balance.
• Correlating gridded land use changes with annual nitrogen flux estimates.

Strengths

• 43.8 GB of gridded data indicating high spatial resolution.
• Covers 87 years (1930-2017) of historical nitrogen trends.
• Integrates multiple data sources including county-scale statistics and gridded land use.

Limitations

• Specific row and column counts are unknown, obscuring dataset granularity.
• Input data sources like county statistics may introduce aggregation biases.
• Sample data is unavailable for preliminary inspection of data structure.

Provenance

Source

Shuyu Y Chang via figshare.

Collection Method

Combined county-scale data from the TREND-Nitrogen dataset with gridded land use and population data.

Time Range

1930 to 2017.

Freshness

Dataset metadata was last updated in March 2026.

Geography

Contiguous United States.