TY  - JOUR
AU  - Höpfner, M.
AU  - Larsen, N.
AU  - Spang, R.
AU  - Luo, B. P.
AU  - Ma, J.
AU  - Svnedsen, S. H.
AU  - Eckermann, S. D.
AU  - Knudsen, B.
AU  - Massoli, P.
AU  - Cairo, F.
AU  - Stiller, G.
AU  - von Clarmann, T.
AU  - Fischer, H.
TI  - MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by montain waves
JO  - Atmospheric chemistry and physics
VL  - 6
SN  - 1680-7316
CY  - Katlenburg-Lindau
PB  - EGU
M1  - PreJuSER-52341
SP  - 1221 - 1230
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - Space borne infrared limb emission measurements by the Michelson Interferometer for Passive Atmospheric Sounding ( MIPAS) reveal the formation of a belt of polar stratospheric clouds ( PSCs) of nitric acid trihydrate ( NAT) particles over Antarctica in mid-June 2003. By mesoscale microphysical simulations we show that this sudden onset of NAT PSCs was caused by heterogeneous nucleation on ice in the cooling phases of large-amplitude stratospheric mountain waves over the Antarctic Peninsula and the Ellsworth Mountains. MIPAS observations of PSCs before this event show no indication for the presence of NAT clouds with volume densities larger than about 0.3 mu m(3)/cm(3) and radii smaller than 3 mu m, but are consistent with supercooled droplets of ternary H2SO4/HNO3/H2O solution ( STS). Simulations indicate that homogeneous surface nucleation rates have to be reduced by three orders of magnitude to comply with the observations.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000236950100002
UR  - https://juser.fz-juelich.de/record/52341
ER  -