Affiliation:
1. Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695022, India
2. Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore 560012, India
Abstract
During the Integrated Campaign for Aerosols, gases and Radiation Budget (ICARB) experiment of ISRO-GBP, altitude profiles of mass concentrations of aerosol black carbon (MB) and total (composite) aerosols (MT) in the lower troposphere were made onboard an aircraft from an urban location, Chennai (13.04 ∘N, 80.17 ∘E). The profiling was carried out up to 3 km (AGL) in eight levels to obtain higher resolution in altitude. Besides, to explore the horizontal gradient in the vertical profiles, measurements were made at two levels [500 m (within ABL) and 1500 m (above ABL)] from ∼10 N∘to 16N∘and ∼80 E∘to 84E∘. The profiles showed a significant vertical extent of aerosols over coastal and offshore regions around Chennai with BC concentrations (∼2 μgm−3) and its contribution to composite aerosols remaining at the same level (between 8 to 10% forFBC) as at the surface. Even though the values are not unusually high as far as an urban location is concerned, but their constancy throughout the vertical column will have important implications to climate impact of aerosols.
Subject
Atmospheric Science,Pollution,Geophysics
Cited by
15 articles.
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