Laboratory Study of H + O3 Product Yields Relevant to the Mesosphere

GSTDTAP

项目编号	1757944
	Laboratory Study of H + O3 Product Yields Relevant to the Mesosphere
	Daniel Matsiev
主持机构	SRI International
项目开始年	2018
	2018-08-01
项目结束日期	2021-07-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	489626(USD)
国家	美国
语种	英语
英文摘要	The goal of this research is to close these information gaps. The researchers will adapt their laboratory hardware to measure the fractional yields of vibrationally excited OH in the range of 150-300 K. This information is needed to accurately recover temperatures from satellite and ground-based observations of OH airglow. Knowledge of mesopause temperature is particularly important for quantifying the heat budget of this atmospheric region, and for monitoring long-term trends. At altitudes around 87 km, the exothermic H + O3 reaction produces vibrationally excited hydroxyl (OHv). This molecule radiates visible and near infrared light ("airglow") from which it is possible infer atmospheric density, temperature, and species concentrations. The OHv molecule is therefore an extremely valuable observable in the mesopause. Although the total reaction rate coefficient of H + O3 is well known, estimates of the vibrational OH product yields vary considerably. Moreover, the temperature dependence of these yields has never been determined for conditions relevant to the mesosphere. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/73011
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Daniel Matsiev.Laboratory Study of H + O3 Product Yields Relevant to the Mesosphere.2018.