Warming of the Arctic lower stratosphere by light absorbing particles

Warming of the Arctic lower stratosphere by light absorbing particles. Baumgardner, D., Kok, G., & Raga, G. Geophysical Research Letters, 31(6):L06117, 2004.

Website abstract bibtex

Recent measurements of light absorbing particles in the Arctic lower stratosphere show significantly higher mass concentrations of black carbon than were measured in 1992. The difference is primarily a result of measurements with a more quantitative and accurate technique than was previously used. We attribute the large amount of light absorbing material to transport from lower latitude, tropospheric sources rather than increases in aircraft emissions. The calculated heating rate in this aerosol layer, as compared to an atmosphere consisting of only gases, increases by 12% during the winter. This is a result of light absorption by the particles and could perturb the altitude of the local tropopause and affect tropospheric/stratospheric exchange processes.

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 title = {Warming of the Arctic lower stratosphere by light absorbing particles},
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 year = {2004},
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 notes = {<b>From Duplicate 2 (<i>Warming of the Arctic lower stratosphere by light absorbing particles</i> - Baumgardner, D; Kok, G; Raga, G)<br/></b><br/><b>From Duplicate 2 (<i>Warming of the Arctic lower stratosphere by light absorbing particles</i> - Baumgardner, D; Kok, G; Raga, G)<br/></b><br/>ISI Document Delivery No.: 809EW<br/>Times Cited: 21<br/>Cited Reference Count: 28},
 abstract = {Recent measurements of light absorbing particles in the Arctic lower stratosphere show significantly higher mass concentrations of black carbon than were measured in 1992. The difference is primarily a result of measurements with a more quantitative and accurate technique than was previously used. We attribute the large amount of light absorbing material to transport from lower latitude, tropospheric sources rather than increases in aircraft emissions. The calculated heating rate in this aerosol layer, as compared to an atmosphere consisting of only gases, increases by 12% during the winter. This is a result of light absorption by the particles and could perturb the altitude of the local tropopause and affect tropospheric/stratospheric exchange processes.},
 bibtype = {article},
 author = {Baumgardner, D and Kok, G and Raga, G},
 journal = {Geophysical Research Letters},
 number = {6}
}

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