Improved spectral photometer for undergraduate observations of atmospheric infrared heat flux and greenhouse gas absorption bands

IF 0.8 4区教育学 Q3 EDUCATION, SCIENTIFIC DISCIPLINES

American Journal of Physics Pub Date : 2023-09-01 DOI:10.1119/5.0135029

G. Blanchard, Bryce A. Bowlsbey, James R. Dyess, Ryan D. Rumsey, Justin B. Woodring

引用次数: 0

Abstract

We present an experiment investigating the physics of the atmospheric greenhouse effect that can be performed by undergraduate physics students. The students construct a three-channel spectral photometer to observe the infrared heat flux in the atmosphere. With this spectral photometer, the students observe the difference in heat flux between the portion of the IR spectrum that is absorbed by water vapor and carbon dioxide and the portion that is not absorbed by atmospheric constituents. The students discover that Earth's surface is warmed by radiation from the greenhouse gas absorption bands, and the radiation of heat to space is retarded by the absorption bands. One component of the experiment is performed on the ground and the other component is performed in the atmosphere using a high-altitude balloon. The students then compare their results to a simulation of infrared radiation transport in the atmosphere.

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用于大学生大气红外热通量和温室气体吸收波段观测的改进分光光度计

我们提出了一个研究大气温室效应物理学的实验，该实验可以由物理学本科生进行。学生们构造了一个三通道光谱光度计来观察大气中的红外热通量。使用该分光光度计，学生们可以观察被水蒸气和二氧化碳吸收的红外光谱部分与未被大气成分吸收的部分之间的热通量差异。学生们发现，地球表面被温室气体吸收带的辐射加热，热量向太空的辐射被吸收带阻挡。实验的一部分在地面上进行，另一部分使用高空气球在大气中进行。然后，学生们将他们的结果与大气中红外辐射传输的模拟结果进行比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American Journal of Physics 物理-物理：综合

CiteScore

1.80

自引率

11.10%

发文量

146

审稿时长

3 months

期刊介绍： The mission of the American Journal of Physics (AJP) is to publish articles on the educational and cultural aspects of physics that are useful, interesting, and accessible to a diverse audience of physics students, educators, and researchers. Our audience generally reads outside their specialties to broaden their understanding of physics and to expand and enhance their pedagogical toolkits at the undergraduate and graduate levels.