globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2912
论文题名:
Smaller desert dust cooling effect estimated from analysis of dust size and abundance
作者: Kok J.F.; Ridley D.A.; Zhou Q.; Miller R.L.; Zhao C.; Heald C.L.; Ward D.S.; Albani S.; Haustein K.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期:4
起始页码: 274
结束页码: 278
语种: 英语
Scopus关键词: aerosol ; climate modeling ; cooling ; desert ; dust ; global climate ; in situ measurement ; optical property ; particle size ; radiative transfer ; size distribution ; supercooling
英文摘要: Desert dust aerosols affect Earth's global energy balance through direct interactions with radiation, and through indirect interactions with clouds and ecosystems. But the magnitudes of these effects are so uncertain that it remains unclear whether atmospheric dust has a net warming or cooling effect on global climate. Consequently, it is still uncertain whether large changes in atmospheric dust loading over the past century have slowed or accelerated anthropogenic climate change, or what the effects of potential future changes in dust loading will be. Here we present an analysis of the size and abundance of dust aerosols to constrain the direct radiative effect of dust. Using observational data on dust abundance, in situ measurements of dust optical properties and size distribution, and climate and atmospheric chemical transport model simulations of dust lifetime, we find that the dust found in the atmosphere is substantially coarser than represented in current global climate models. As coarse dust warms the climate, the global dust direct radiative effect is likely to be less cooling than the 1/40.4 W m2 estimated by models in a current global aerosol model ensemble. Instead, we constrain the dust direct radiative effect to a range between 0.48 and +0.20 W m 2, which includes the possibility that dust causes a net warming of the planet. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105805
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Statistics, University of California, Los Angeles, CA, United States; NASA Goddard Institute for Space Studies, New York, NY, United States; School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, China; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NY, United States; Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, France; School of Geography and the Environment, University of Oxford, Oxford, United Kingdom

Recommended Citation:
Kok J.F.,Ridley D.A.,Zhou Q.,et al. Smaller desert dust cooling effect estimated from analysis of dust size and abundance[J]. Nature Geoscience,2017-01-01,10(4)
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