195
Atmospheric Chemistry
HNO 2
OH
Primary Reactive Pathway
Secondary Reactive Pathway
hν
hν
hν
NO
NO 3
NO 2 N 2 O
HO 2
O 3
RO 2
O 3
HNO 3
OH
OH
NO 2
NO 3
Rainout
Dry Deposition
NO or hν
Figure 5.10
The major reactive nitrogen species in the troposphere.
Fertilizers
34%
Point
Sources
23%
Atmospheric
Nitrate
25%
Atmospheric
Ammonium
14%
Animal Waste
4%
Atmospheric
Nitrate
42%
Animal Waste
3%
Atmospheric
Ammonium
13%
Point
Sources
17%
Fertilizers
25%
1988
2030
Figure 5.11
The atmospheric sources of nitrate to the Chesapeake Bay showing likely increase by the year 2030.