| Total watershed Nitrogen input from sewer systems |
≈ 4 × 109 kg N / yr |
13501 |
Tuholske, Cascade; Halpern, Benjamin S.; … |
|
| Atmospheric N2O concentration |
≈ 334 parts per billion |
25529 |
NOAA ESRL Global Monitoring Laboratory |
|
| Pre-industrial atmospheric N2O concentration |
≈ 270 parts per billion |
37377 |
MacFarling Meure, C., D. Etheridge, … |
|
| Total watershed Nitrogen input from human wastewater |
≈ 6 × 109 kg N / yr |
40335 |
Tuholske, Cascade; Halpern, Benjamin S.; … |
|
| Total watershed Nitrogen input from septic systems |
≈ 2 × 108 kg N / yr |
42569 |
Tuholske, Cascade; Halpern, Benjamin S.; … |
|
| Global production mass of nitrogen contained in ammonia (NH3) |
≈ 1.50 × 1011 kg N / yr |
60580 |
United States Geological Survey |
|
| Global production mass of nitrogen contained in ammonia (NH3) |
≈ 1.52 × 1011 kg N / yr |
61614 |
International Fertilizer Association |
|
| Total watershed Nitrogen input from open defecation |
≈ 2 × 109 kg N / yr |
88616 |
Tuholske, Cascade; Halpern, Benjamin S.; … |
|
