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POSIDON
Treadaway, V., et al. (2022), Long-range transport of Asian emissions to the West Pacific tropical tropopause layer, J Atmos Chem, 79, 81-100, doi:10.1007/s10874-022-09430-7.
Rollins, A.W., et al. (2018), SO2 Observations and Sources in the Western Pacific Tropical Tropopause Region, J. Geophys. Res., 123, 13,549-13,559, doi:10.1029/2018JD029635.
This flight provided additional measurements of TTL cirrus downstream of deep convection and additional characterization of the western Pacific ozone distribution in the upper troposphere. The highlight of the flight was detection of SO2 enhancements in the TTL near the southern end of the flight track from volcanic emissions in the area.
Submitted by
Susan Kimi McFadden on 11/11/16
Sample ice clouds and dehydration in the low temperature region to the southwest of Guam, and explore SO2 and O3 distributions in the TTL.
Submitted by
Susan Kimi McFadden on 11/11/16
This flight provided measurements of trace gases and ice crystal microphysical properties in anvil cirrus after the convection had subsided and in cold cirrus near the tropopause. Enhanced ozone concentrations in the uppermost troposphere were also measured on this flight.
Submitted by
Susan Kimi McFadden on 11/11/16
This flight is designed to explore the chemical composition in the tropical tropopause layer in the region south of Guam.
Submitted by
Susan Kimi McFadden on 11/11/16
This flight provided additional sampling of TTL trace gases and cirrus in air perturbed by typhoon Haima as well as water vapor concentration across a horizontal temperature gradient.
Submitted by
Susan Kimi McFadden on 11/11/16
This flight provided extensive sampling of cirrus throughout the TTL, additional tracer measurements in the air mass perturbed by typhoon Haima, sampling of an enhanced SO2 layer in the uppermost troposphere that was predicted by GEOS5 chemical transport model, and measurements of a water vapor gradient across the leading edge of TTL cirrus over Guam. Instruments mostly performed well.
Submitted by
Susan Kimi McFadden on 11/11/16
