对过去和未来甲烷辐射强迫变化的估计

IF 0.9 Q4 OPTICS Atmospheric and Oceanic Optics Pub Date : 2024-03-23 DOI:10.1134/S1024856024010020

S. V. Akishina, A. S. Mikhailova, Yu. M. Timofeyev, N. N. Filippov

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引用次数: 0

摘要

摘要通过分析利用 MODTRAN 辐射代码计算的上涌热辐射（UTR）通量，估算了五种气候大气模式和三种甲烷含量值（工业化前（0.8 ppm）、当前（1.8 ppm）和未来（2.5 ppm））下甲烷引起的辐射强迫。与工业化前相比，当前的 UTR 通量值低了 0.15%。在当前甲烷含量下，UTR 通量的季节和空间变化达到了 13%。据估计，自前工业化时代以来，大气中甲烷的增长导致的辐射强迫为-0.482--0.266 W/m2。

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Estimates of Variations in Radiative Forcing of Methane in the Past and in the Future

The radiative forcing due to methane is estimated from the analysis of upwelling thermal radiation (UTR) fluxes calculated with the use of MODTRAN radiative code for five climate atmospheric models and three methane content values: preindustrial (0.8 ppm), current (1.8 ppm), and future (2.5 ppm). The current values of UTR flux are ∼0.15% lower as compared to the preindustrial era. Seasonal and spatial variations in UTR fluxes attain ∼13% at the current methane content. The radiative forcing due to the growth of atmospheric methane since the preindustrial era is estimated at −0.482 to −0.266 W/m².

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来源期刊

Atmospheric and Oceanic Optics OPTICS-

CiteScore

2.40

自引率

42.90%

发文量

期刊介绍： Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.