DOI: 10.1002/2013GL057775
论文题名: Global-scale seasonally resolved black carbon vertical profiles over the Pacific
作者: Schwarz J.P. ; Samset B.H. ; Perring A.E. ; Spackman J.R. ; Gao R.S. ; Stier P. ; Schulz M. ; Moore F.L. ; Ray E.A. ; Fahey D.W.
刊名: Geophysical Research Letters
ISSN: 0094-8438
EISSN: 1944-8169
出版年: 2013
卷: 40, 期: 20 起始页码: 5542
结束页码: 5547
语种: 英语
英文关键词: AeroCom
; aerosol
; black carbon
; HIPPO
; remote
; tropical tropopause layer
Scopus关键词: AeroCom
; Black carbon
; HIPPO
; remote
; Tropical tropopause layers
; Aerosols
; Clouds
; Mixing
; Poles
; Climatology
; aerosol composition
; atmospheric pollution
; black carbon
; mixing
; pollutant transport
; seasonal variation
; spatiotemporal analysis
; tropopause
; vertical profile
; Pacific Ocean
英文摘要: Black carbon (BC) aerosol loadings were measured during the High-performance Instrumented Airborne Platform for Environmental Research Pole-to-Pole Observations (HIPPO) campaign above the remote Pacific from 85°N to 67°S. Over 700 vertical profiles extending from near the surface to max ∼14 km altitude were obtained with a single-particle soot photometer between early 2009 and mid-2011. The data provides a climatology of BC in the remote regions that reveals gradients of BC concentration reflecting global-scale transport and removal of pollution. BC is identified as a sensitive tracer of extratropical mixing into the lower tropical tropopause layer and trends toward surprisingly uniform loadings in the lower stratosphere of ∼1 ng/kg. The climatology is compared to predictions from the AeroCom global model intercomparison initiative. The AeroCom model suite overestimates loads in the upper troposphere/lower stratosphere (∼10×) more severely than at lower altitudes (∼3×), with bias roughly independent of season or geographic location; these results indicate that it overestimates BC lifetime. Key Points A BC climatology is provided for the remote Pacific and Polar regions AeroCom overestimates remote BC with strong altitude dependence Extratropical mixing into the TTL is estimated from BC latitudinal gradients ©2013 The Authors. Geophysical Research Letters published by Wiley on behalf of the American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84886033401&doi=10.1002%2f2013GL057775&partnerID=40&md5=6e9016c03ee0af4134b670ae046bbe9e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5702
Appears in Collections: 气候减缓与适应
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作者单位: Chemical Sciences Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, 325 Broadway R-CSD6, Boulder, CO 80305, United States
Recommended Citation:
Schwarz J.P.,Samset B.H.,Perring A.E.,et al. Global-scale seasonally resolved black carbon vertical profiles over the Pacific[J]. Geophysical Research Letters,2013-01-01,40(20).