Reply to Comment by Sorensen Et Al. On “Could We Achieve the On-Line Measurements of the Optical Fractal Dimensions of Black Carbon?”

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-08-23 DOI:10.1029/2025GL117461

Gang Zhao, Min Hu

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引用次数: 0

Abstract

Zhao et al. (2025, https://doi.org/10.1029/2024GL112332) present a novel method to derive the optical fractal dimension ( $D_{f}$ ) of ambient black carbon (BC) aggregates using mobility diameters and mass concentrations. Sorensen et al. (2025, https://doi.org/10.1029/2025GL116124?af=R) argues that the BC $D_{f}$ can also be derived from its optical scattering signals. We agree with Sorensen et al. (2025, https://doi.org/10.1029/2025GL116124?af=R) that the BC $D_{f}$ with a diameter >1.4 $μ m$ can be derived from optical scattering signals. However, challenges remain for accurate online measurement of ambient BC, particularly for aggregates with diameters below 1,000 nm, as the applicability of power law relationships between wave vector and scattered intensity is unclear. Future research should focus on refining these measurements to address uncertainties and improve applicability.

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回复Sorensen等人的评论。关于“能否实现黑碳光学分形维数的在线测量？”

Zhao等人（2025,https://doi.org/10.1029/2024GL112332）提出了一种利用迁移率直径和质量浓度推导环境黑碳（BC）聚集体光学分形维数（D f ${D}_{f}$）的新方法。Sorensen等人（2025,https://doi.org/10.1029/2025GL116124?af=R）认为BC D f ${D}_{f}$也可以由其光散射信号推导出来。我们同意Sorensen et al. (2025；https://doi.org/10.1029/2025GL116124?af=R)，可以从光散射信号推导出直径>；1.4 μ m ${\upmu}\mathrm{m}$的BC D f ${D}_{f}$。然而，由于波矢量和散射强度之间的幂律关系的适用性尚不清楚，因此对环境BC的准确在线测量仍然存在挑战，特别是对于直径小于1,000 nm的聚集体。未来的研究应侧重于改进这些测量，以解决不确定性和提高适用性。

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

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.