| Autor: |
M. Luria, Robert E. Imhoff, Ralph J. Valente, Roger L. Tanner |
| Rok vydání: |
2001 |
| Předmět: |
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| Zdroj: |
Atmospheric Environment. 35:179-183 |
| ISSN: |
1352-2310 |
| DOI: |
10.1016/s1352-2310(00)00272-7 |
| Popis: |
Airborne measurements were performed in the plume of the Cumberland Power Plant during August 1998 using a highly sensitive SO2 instrument. The measurements confirmed previous suggestions that NOy species are removed from the plume at a faster rate than SO2. The differential removal rate (the difference between loss rate of NOy and that of SO2) was estimated to be 0.06 h−1. This value implies that the NOy loss rate is in the range of 0.09–0.14 h−1. The application of a mathematical argument, based on the convolution integral, enabled improved synchronization of the data from the SO2 and NOy instruments. Examination of the synchronized data revealed that the concentration ratio of SO2 and NOy varies across the plume. Near the source it is higher at the wings of the plume, while in the core of the plume it is similar to the ratio at the release point. Two possible explanations of the observations are discussed: conversion to non-measurable NOy species, and in-plume loss of NOy (as HNO3) via dry deposition. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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