Other
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3208802t&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 8, CiteID L08802
Other
37
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Pollution: Urban And Regional (0305, 0478, 4251), Biogeosciences: Pollution: Urban, Regional And Global (0345, 4251), Global Change: Regional Climate Change, Atmospheric Processes: Radiative Processes
Scientific paper
During a comprehensive aerosol field campaign as part of ISRO-GBP, extensive measurements of aerosol black carbon were made during December 2004, for the first time, at Kanpur, an urban continental location in northern India. BC diurnal variation is associated with changes in boundary layer mixing and anthropogenic activities. BC concentration in Kanpur is comparable to those measured in other mega cities of India but much higher than in similar locations of Europe, USA and Asia. High BC concentration is found both in absolute terms (6-20 μg m-3) and mass fraction (~10%) yielding very low single scattering albedo (0.76). The estimated surface forcing is as high as -62 +/- 23 W m-2 and top of the atmosphere (TOA) forcing is +9 +/- 3 W m-2, which means the atmospheric absorption is +71 W m-2. The short wave atmospheric absorption translates to a lower atmospheric heating of ~1.8°K/day. Large surface cooling and lower atmospheric heating may have impacts to regional climate.
Dey Sagnik
Satheesh S. K.
Tare Vinod
Tripathi Sachchida Nand
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