气候变化领域集成服务门户(CCPortal): Constraining the Surface Flux of Sea Spray Particles From the Southern Ocean

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DOI	10.1029/2019JD032026
	Constraining the Surface Flux of Sea Spray Particles From the Southern Ocean
	Hartery S.; Toohey D.; Revell L.; Sellegri K.; Kuma P.; Harvey M.; McDonald A.J.
发表日期	2020
ISSN	2169897X
卷号	125 期号:4
英文摘要	Modeling the shortwave radiation balance over the Southern Ocean region remains a challenge for Earth system models. To investigate whether this is related to the representation of aerosol-cloud interactions, we compared measurements of the total number concentration of sea spray-generated particles within the Southern Ocean region to model predictions thereof. Measurements were conducted from a container laboratory aboard the R/V Tangaroa throughout an austral summer voyage to the Ross Sea. We used source-receptor modeling to calculate the sensitivity of our measurements to upwind surface fluxes. From this approach, we could constrain empirical parameterizations of sea spray surface flux based on surface wind speed and sea surface temperature. A newly tuned parameterization for the flux of sea spray particles based on the near-surface wind speed is presented. Comparisons to existing model parameterizations revealed that present model parameterizations led to overestimations of sea spray concentrations. In contrast to previous studies, we found that including sea surface temperature as an explanatory variable did not substantially improve model-measurement agreement. To test whether or not the parameterization may be applicable globally, we conducted a regression analysis using a database of in situ whitecap measurements. We found that the key fitting parameter within this regression agreed well with the parameterization of sea spray flux. Finally, we compared calculations from the best model of surface flux to boundary layer measurements collected onboard an aircraft throughout the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study (SOCRATES), finding good agreement overall. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol; fog; sea spray; Southern Ocean; whitecap
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/186150
作者单位	School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; Laboratoire de Météorologie Physique (LaMP), CNRS/UCA, Aubiére, France; National Institute of Water and Atmospheric Research, Wellington, New Zealand
推荐引用方式 GB/T 7714	Hartery S.,Toohey D.,Revell L.,et al. Constraining the Surface Flux of Sea Spray Particles From the Southern Ocean[J],2020,125(4).
APA	Hartery S..,Toohey D..,Revell L..,Sellegri K..,Kuma P..,...&McDonald A.J..(2020).Constraining the Surface Flux of Sea Spray Particles From the Southern Ocean.Journal of Geophysical Research: Atmospheres,125(4).
MLA	Hartery S.,et al."Constraining the Surface Flux of Sea Spray Particles From the Southern Ocean".Journal of Geophysical Research: Atmospheres 125.4(2020).