Agriculture & Biology
Sea of Japan
100%
Pacific Ocean
87%
stable isotopes
77%
seawater
66%
biomass burning
63%
nitrates
61%
atmospheric deposition
55%
coastal water
42%
South Korea
41%
coal
39%
isotopes
37%
oxygen
25%
summer
24%
air
24%
China
23%
nitrogen
21%
sampling
13%
Earth & Environmental Sciences
stable isotope
62%
nitrate
53%
seawater
52%
ocean
42%
sea
40%
atmospheric deposition
39%
biomass burning
38%
air mass
36%
coastal water
33%
vehicle
28%
isotope
27%
coal
24%
oxygen
23%
nitrogen
22%
summer
21%
particle
18%
Engineering & Materials Science
Nitrates
92%
Isotopes
90%
Seawater
81%
Blow molding
39%
Nitrogen
34%
Biomass
33%
Coal
30%
Oxygen
29%
Air
20%
Water
20%
Chemical Compounds
Stable Isotope
81%
Coastal Water
57%
Nitrate
55%
Coal
35%
Isotope
31%
Nitrogen
22%
Dioxygen
17%
Reduction
16%