Sun photometer and lidar measurements of the plume from the Hawaii Kilauea Volcano Pu'u O'o vent: Aerosol flux and SO2 lifetime

Sun photometer and lidar measurements of the plume from the Hawaii Kilauea Volcano Pu'u O'o vent: Aerosol flux and SO2 lifetime

Aerosol optical depths and lidar measurements were obtained under the plume of Hawaii Kilauea Volcano on August 17, 2001, ∼9 km downwind from the erupting Pu'u O'o vent. Measured aerosol optical depths (at 500 nm) were between 0.2–0.4. Aerosol size distributions inverted from the spectral...

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Veröffentlicht in:Geophysical research letters 2002-08, Vol.29 (16), p.30-1-30-4
Hauptverfasser: Porter, John N., Horton, Keith A., Mouginis-Mark, Peter J., Lienert, Barry, Sharma, Shiv K., Lau, Eric, Sutton, A. Jeff, Elias, Tamar, Oppenheimer, Clive
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container_end_page 30-4
container_issue 16
container_start_page 30-1
container_title Geophysical research letters
container_volume 29
creator Porter, John N.
Horton, Keith A.
Mouginis-Mark, Peter J.
Lienert, Barry
Sharma, Shiv K.
Lau, Eric
Sutton, A. Jeff
Elias, Tamar
Oppenheimer, Clive
description Aerosol optical depths and lidar measurements were obtained under the plume of Hawaii Kilauea Volcano on August 17, 2001, ∼9 km downwind from the erupting Pu'u O'o vent. Measured aerosol optical depths (at 500 nm) were between 0.2–0.4. Aerosol size distributions inverted from the spectral sun photometer measurements suggest the volcanic aerosol is present in the accumulation mode (0.1–0.5 micron diameter), which is consistent with past in situ optical counter measurements. The aerosol dry mass flux rate was calculated to be 53 Mg d−1. The estimated SO2 emission rate during the aerosol measurements was ∼1450 Mg d−1. Assuming the sulfur emissions at Pu'u O'o vent are mainly SO2 (not aerosol), this corresponds to a SO2 half‐life of 6.0 hours in the atmosphere.
doi_str_mv 10.1029/2002GL014744
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title Sun photometer and lidar measurements of the plume from the Hawaii Kilauea Volcano Pu'u O'o vent: Aerosol flux and SO2 lifetime
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