scholarly journals Tropospheric nitric acid columns from the IASI satellite instrument interpreted with a chemical transport model: Implications for parameterizations of nitric oxide production by lightning

2014 ◽  
Vol 119 (16) ◽  
pp. 10068-10079 ◽  
Author(s):  
Matthew Cooper ◽  
Randall V. Martin ◽  
Catherine Wespes ◽  
Pierre-Francois Coheur ◽  
Cathy Clerbaux ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid ◽  
Transport Model ◽  
Chemical Transport ◽  
Nitric Oxide Production ◽  
Chemical Transport Model ◽  
Oxide Production

Assessment of the impact of large changes in the ratio of photolysis rate of nitrate to that of gas nitric acid on HONO concentrations simulated by a 3-D chemical transport model

2021 ◽  
Author(s):  
Yitian Guo ◽  
Junling An ◽  
Jingwei Zhang
Keyword(s):  
Nitric Acid ◽  
Transport Model ◽  
Heterogeneous Reaction ◽  
Ground Surface ◽  
Chemical Transport ◽  
Field Studies ◽  
Chemical Transport Model ◽  
Substantial Impact ◽  
Photolysis Rate ◽  
The Impact

<p>Some studies show that photolysis of nitrate and deposited nitrate and gas nitric acid (HNO<sub>3</sub>) on the ground surface is much faster than that of HNO<sub>3</sub>. The former mechanism has been considered as a possible daytime HONO source and discussed in many laboratory and field studies. Although this mechanism is also coupled into some three-dimensional chemical transport models, the effect of large changes in the ratio of photolysis rate of nitrate to that of HNO<sub>3</sub> (RAT) on HONO concentrations has not been assessed and will be discussed here by using the updated WRF-Chem model. Simulations indicate that in the morning, this mechanism only resulted in a HONO increase of a few ppt, while the heterogeneous reaction of NO<sub>2</sub> enhanced HONO by about 150 ppt; in the afternoon, however, this mechanism led to a significant HONO increase, with its contribution to HONO concentrations being close to the contribution of the heterogeneous reaction of NO<sub>2</sub>. In some heavily nitrate-polluted areas, this mechanism contributed more than 80% of HONO concentrations during the afternoon. Large changes in RAT produced a substantial impact on HONO concentrations. When RAT was altered from 15 to 100, increase of HONO concentrations was enhanced by about 6 times. Our results suggest that more laboratory and field studies on the photolysis rates of nitrate and deposited nitrate and HNO<sub>3</sub> on the ground surface are still needed.</p>

502: Pressure Induces Nitric Oxide Production by Human Ureteral Cells in Vitro

2005 ◽  
Vol 173 (4S) ◽  
pp. 137-137
Author(s):  
Michael M. Ohebshalom ◽  
Stella K. Maeng ◽  
Jie Chen ◽  
Dix P. Poppas ◽  
Diane Felsen
Keyword(s):  
Nitric Oxide ◽  
Nitric Oxide Production ◽  
Oxide Production

Effect of Nelumbo nucifera on nitric oxide production and co-stimulatory molecules

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
D Mukherjee ◽  
TN Khatua ◽  
A Biswas ◽  
T Biswas ◽  
BP Saha ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nelumbo Nucifera ◽  
Nitric Oxide Production ◽  
Oxide Production
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