Incorporation of a Snow NOx Source into a Global Chemical Transport Model (Invited)
Abstract
We have implemented the photolysis of snow nitrate into a global chemical transport model for the first time in order to calculate the flux and redistribution of nitrogen in polar snowpacks. The calculated potential flux of NOx from polar snow is comparable to observations. Model results suggest that nitrate can be recycled many times in low snow accumulation rate regions before burial below the photolytic zone. We use the model to examine the implications of snow nitrate photochemistry for polar boundary layer chemistry, the recycling and redistribution of nitrogen in polar regions and its spatial variability, and the preservation of nitrate in ice cores.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFM.C11B..07Z
- Keywords:
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- 3322 ATMOSPHERIC PROCESSES Land/atmosphere interactions;
- 0736 CRYOSPHERE Snow;
- 3359 ATMOSPHERIC PROCESSES Radiative processes