ストラトスフィアのシアン化水素のスペクトル検出
Science (New York, N.Y.)
|October 16, 1981
まとめ
ストラトスフィアの水素シアン化物 (HCN) は,航空機からの赤外線スペクトルを使用して検出されました. 12km以上の縦列の平均量は7.1 x 10^14分子/cm2で,混合比は170 pptvであった.
科学分野:
- 大気化学 大気化学
- スペクトロスコーピーは,スペクトロスコーピーを用います.
- ストラトスフィアの科学
背景:
- シアン化水素 (HCN) は,平流圏における重要な微量ガスである.
- HCNの分布を理解することは,大気化学とオゾン層の研究に不可欠です.
- 以前の平流層のHCNの測定は限られていた.
研究 の 目的:
- ストラトスフィアの水素シアン化物 (HCN) を特定し,定量化する.
- 垂直列の量と平流層のHCNの混合比率を決定する.
- 大気中のプロセスにおけるHCNの役割のよりよい理解に貢献する.
主な方法:
- ストラトスフィアの吸収を分析するために赤外線スペクトロスコピーを用いた.
- 8回の研究飛行で,高空飛行機のデータを収集した.
- 水素シアン化物の特徴的な吸収線がスペクトルで特定されました.
主要な成果:
- シアン化水素の吸収特性は,平流圏のスペクトルで成功裏に特定されました.
- 12km以上にあるHCNの平均垂直列量は,7.1 ± 0.8 x 10^14分子/cm2と決定されました.
- 平均混合比は170 parts per trillion by volume (pptv) で,平流圏のHCN.について計算されました.
結論:
- この研究では,航空機ベースの赤外線スペクトロスコピーを用いて,平流層のシアン化水素を成功裏に定量化しました.
- 導出されたHCN列の量と混合比は,大気モデルのための貴重なデータを提供します.
- この発見は,上部熱帯圏と平流圏の微量ガス組成に関する私たちの知識を高めています.
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