Global-scale seasonally resolved black carbon vertical profiles over the Pacific

被引：107

作者：

Schwarz, J. P. ^{[1
,2
]}

Samset, B. H. ^{[3
]}

Perring, A. E. ^{[1
,2
]}

Spackman, J. R. ^{[1
,4
]}

Gao, R. S. ^{[1
]}

Stier, P. ^{[5
]}

Schulz, M. ^{[6
]}

Moore, F. L. ^{[7
]}

Ray, Eric A. ^{[1
,2
]}

Fahey, D. W. ^{[1
,2
]}

机构：

[1] NOAA, Div Chem Sci, Earth Syst Res Lab, Boulder, CO 80305 USA

[2] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[3] CICERO, Oslo, Norway

[4] Sci & Technol Corp, Boulder, CO USA

[5] Univ Oxford, Dept Phys, Oxford, England

[6] Lab Sci Climat & Environm, Gif Sur Yvette, France

[7] NOAA, Global Monitoring Div, Earth Syst Res Lab, Boulder, CO 80305 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2013年 / 40卷 / 20期

基金：

欧洲研究理事会;

关键词：

TRANSPORT;

D O I：

10.1002/2013GL057775

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

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 degrees N to 67 degrees S. Over 700 vertical profiles extending from near the surface to max similar to 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 similar to 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 (similar to 10x) more severely than at lower altitudes (similar to 3x), with bias roughly independent of season or geographic location; these results indicate that it overestimates BC lifetime.

引用

页码：5542 / 5547

页数：6

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