Abstract

The concept of a high aperture near-infrared cross-dispersion echelle-spectrometer is presented for greenhouse gases remote measurements from space. This task is of a global nature, industrial and household emissions are anthropogenic sources of greenhouse-gas emissions. In recent years, average levels of carbon (CO₂) and methane (CH₄) have continued to increase, reaching levels of 410 ppm and 1877 ppb, respectively, to date. Obtaining objective information about the state of the carbon balance in the atmosphere is possible only with the use of space-based instruments. The Driada instrument consists of three channels. The main one is a high-resolution spectrometer for the 1.4- to 1.67-μm wavelength range and is designed to measure CO₂ absorption lines at 1.58 and 1.6 μm, CH₄ lines at 1.65 μm, and a number of H₂O lines. Two additional channels are designed to measure the O₂ band at 0.76 μm and aerosol characterization. The scientific tasks and key parameters of the main infrared channel are discussed.

中文翻译：

---

用于从太空测量温室气体的 Driada 光谱仪的红外通道

摘要

提出了高孔径近红外交叉色散中阶梯光栅光谱仪的概念，用于从太空进行温室气体远程测量。这项任务具有全球性，工业和家庭排放是温室气体排放的人为来源。近年来，碳（CO ₂）和甲烷（CH ₄）的平均水平持续增加，迄今为止分别达到410 ppm和1877 ppb的水平。只有使用天基仪器才能获得有关大气中碳平衡状态的客观信息。Driada 仪器由三个通道组成。主要的一台是1.4至1.67μm波长范围的高分辨率光谱仪，设计用于测量1.58和1.6μm处的CO _{2吸收线、1.65μm处的CH 4}线以及许多H ₂ O线。两个附加通道设计用于测量 0.76 μm 处的 O ₂带和气溶胶表征。讨论了红外主通道的科学任务和关键参数。