Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090996 |
Simultaneous measurements of O3 and HCOOH vertical fluxes indicate rapid in‐canopy terpene chemistry enhances O3 removal over mixed temperate forests | |
Michael P Vermeuel; Patricia A. Cleary; Ankur R. Desai; Timothy H. Bertram | |
2020-12-22 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Dry deposition, the second largest removal process of ozone (O3) in the troposphere, plays a role in controlling the natural variability of surface O3 concentrations. Terrestrial ecosystems remove O3 either through stomatal uptake or nonstomatal processes. In chemical transport models nonstomatal pathways are roughly constrained and may not correctly capture total O3 loss. To address this, the first simultaneous eddy covariance measurements of O3 and formic acid (HCOOH), a tracer of in‐canopy oxidation of biogenic terpenes, were made in a mixed temperate forest in Northern Wisconsin. Daytime maximum O3 deposition velocities, vd(O3), ranged between 0.5‐1.2 cm s‐1. Comparison of observed vd(O3) with observationally‐constrained estimates of stomatal uptake and parameterized estimates of cuticular and soil uptake reveal a large (10‐90%) residual nonstomatal contribution to vd(O3). The residual downward flux of O3 was well correlated with measurements of HCOOH upward flux, suggesting unaccounted for in‐canopy gas‐phase chemistry. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/309024 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Michael P Vermeuel,Patricia A. Cleary,Ankur R. Desai,等. Simultaneous measurements of O3 and HCOOH vertical fluxes indicate rapid in‐canopy terpene chemistry enhances O3 removal over mixed temperate forests[J]. Geophysical Research Letters,2020. |
APA | Michael P Vermeuel,Patricia A. Cleary,Ankur R. Desai,&Timothy H. Bertram.(2020).Simultaneous measurements of O3 and HCOOH vertical fluxes indicate rapid in‐canopy terpene chemistry enhances O3 removal over mixed temperate forests.Geophysical Research Letters. |
MLA | Michael P Vermeuel,et al."Simultaneous measurements of O3 and HCOOH vertical fluxes indicate rapid in‐canopy terpene chemistry enhances O3 removal over mixed temperate forests".Geophysical Research Letters (2020). |
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