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

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

[1] 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 a...

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Bibliographische Detailangaben
Veröffentlicht in:Geophysical research letters. - 1984. - 40(2013), 20 vom: 28. Okt., Seite 5542-5547
1. Verfasser: Schwarz, J P (VerfasserIn)
Weitere Verfasser: Samset, B H, Perring, A E, Spackman, J R, Gao, R S, Stier, P, Schulz, M, Moore, F L, Ray, Eric A, Fahey, D W
Format: Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Geophysical research letters
Schlagworte:Journal Article AeroCom HIPPO aerosol black carbon remote tropical tropopause layer
Beschreibung
Zusammenfassung:[1] 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
Beschreibung:Date Revised 08.04.2022
published: Print-Electronic
Citation Status Publisher
ISSN:0094-8276