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Trajectory studies of large HNO 3 ‐containing PSC particles in the Arctic: Evidence for the role of NAT
Author(s) -
McKinney K. A.,
Wennberg P. O.,
Dhaniyala S.,
Fahey D. W.,
Northway M. J.,
Künzi K. F.,
Kleinböhl A.,
Sinnhuber M.,
Küllmann H.,
Bremer H.,
Mahoney M. J.,
Bui T. P.
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2003gl018430
Subject(s) - nitric acid , particle (ecology) , stratosphere , polar , nat , arctic , atmospheric sciences , particle size , sedimentation , physics , environmental science , meteorology , chemistry , geology , inorganic chemistry , oceanography , astronomy , geomorphology , quantum mechanics , sediment
Large (5 to >20 μm diameter) nitric‐acid‐containing polar stratospheric cloud (PSC) particles were observed in the Arctic stratosphere during the winter of 1999–2000. We use a particle growth and sedimentation model to investigate the environment in which these particles grew and the likely phase of the largest particles. Particle trajectory calculations show that, while simulated nitric acid dihydrate (NAD) particle sizes are significantly smaller than the observed maximum particle sizes, nitric acid trihydrate (NAT) particle trajectories are consistent with the largest observed particle sizes.