气候变化领域集成服务门户(CCPortal): Temperature-Dependent Optical Properties of Liquid Water From 240 to 298 K

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DOI	10.1029/2020JD032624
	Temperature-Dependent Optical Properties of Liquid Water From 240 to 298 K
	Rowe P.M.; Fergoda M.; Neshyba S.
发表日期	2020
ISSN	2169897X
卷号	125 期号:17
英文摘要	Clouds play a key role in Earth's radiative balance. Radiative transfer through liquid clouds depends on the optical properties of liquid water. Although these optical properties are known to be temperature dependent, radiative transfer simulations typically use properties based on measurements made at 298 K, even for supercooled liquid clouds at temperatures as low as 240 K. Here we report temperature-dependent complex refractive indices (CRIs) of liquid water at 240, 253, 263, and 273 K from 1 to 15,000 cm−1 (0.7 to 10,000 μm). Imaginary parts of the CRI (k) are inferred from values reported in the literature for temperatures of 238 to 298 K and the real parts are obtained via Kramers-Kronig transformation. Mie theory is used to calculate single scattering albedos and Legendre moments from the CRI, producing a set of optical constants suitable for radiative transfer calculations through supercooled liquid cloud at temperatures as low as 240 K. Ignoring the temperature dependence of complex refractive indices of liquid water is thereby found to result in biased-high supercooled liquid-cloud fluxes from 250 to 580 cm−1 and biased-low fluxes from 710 to 940 cm−1. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	complex refractive index; complex refractive indices of liquid water become more ice-like as temperature decreases to 240 K; liquid water; temperature-dependent complex refractive indices of liquid water
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185783
作者单位	NorthWest Research Associates, Redmond, WA, United States; Department of Physics, University of Santiago, Santiago, Chile; Department of Physics, University of Puget Sound, Tacoma, WA, United States; Department of Chemistry, University of Puget Sound, Tacoma, WA, United States
推荐引用方式 GB/T 7714	Rowe P.M.,Fergoda M.,Neshyba S.. Temperature-Dependent Optical Properties of Liquid Water From 240 to 298 K[J],2020,125(17).
APA	Rowe P.M.,Fergoda M.,&Neshyba S..(2020).Temperature-Dependent Optical Properties of Liquid Water From 240 to 298 K.Journal of Geophysical Research: Atmospheres,125(17).
MLA	Rowe P.M.,et al."Temperature-Dependent Optical Properties of Liquid Water From 240 to 298 K".Journal of Geophysical Research: Atmospheres 125.17(2020).