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Title: Regime-Dependence of Nocturnal Nitrate Formation via N2O5 Hydrolysis and Its Implication for Mitigating Nitrate Pollution

Journal Article · · Geophysical Research Letters
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  1. Chinese Meteorological Administration, Beijing (China)
  2. Beijing University of Chemical Technology, Beijing (China)
  3. Beijing University of Chemical Technology, Beijing (China); Nanjing University (China)
  4. Beijing University of Chemical Technology, Beijing (China); University of Helsinki (Finland)
  5. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  6. Nanjing University (China)
  7. Jinan University, Guangzhou, Guangdong (China)
  8. National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Earth System Research Laboratory

The heterogeneous hydrolysis of dinitrogen pentoxide (N2O5) is an important pathway in nitrate formation; however, its formation rate and relative contribution to total particulate nitrate (pNO3-) are highly variable. Here we report that nocturnal pNO3- formation via N2O5 hydrolysis is dependent on the regime defined by the ratio of NO2 to O3. Nocturnal pNO3- formation via N2O5 hydrolysis is suppressed in an O3-limited regime but enhanced in a NO2-limited regime. The results have crucial implications for effective control of nitrate pollution in the future. An exclusive decrease in NO2 will decrease nocturnal pNO3- formation in a NO2-limited regime but may be less effective or even increase nocturnal pNO3- formation in an O3-limited regime.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Atmospheric Radiation Measurement (ARM) Archive
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Natural Science Foundation of China (NSFC)
Contributing Organization:
Pacific Northwest National Laboratory (PNNL); Brookhaven National Laboratory (BNL); Argonne National Laboratory (ANL); Oak Ridge National Laboratory (ORNL)
Grant/Contract Number:
SC0012704; 42275117
OSTI ID:
2281577
Alternate ID(s):
OSTI ID: 2274741; OSTI ID: 2280612
Report Number(s):
BNL-225157-2024-JAAM
Journal Information:
Geophysical Research Letters, Vol. 50, Issue 24; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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