|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 10 van 19 gevonden artikelen
| Titel: |
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
| Auteur: |
M. Höpfner N. Larsen R. Spang B. P. Luo J. Ma S. H. Svendsen S. D. Eckermann B. Knudsen P. Massoli F. Cairo G. Stiller T. v. Clarmann H. Fischer |
| Verschenen in: |
Atmospheric chemistry and physics |
| Paginering: | Jaargang 6 (2006) nr. 5 pagina's 1221-1230 |
| Jaar: |
2006 |
| Inhoud: |
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 µm<sup>3</sup>/cm<sup>3</sup> and radii smaller than 3 µm, but are consistent with supercooled droplets of ternary H<sub>2</sub>SO<sub>4</sub>/HNO<sub>3</sub>/H<sub>2</sub>O solution (STS). Simulations indicate that homogeneous surface nucleation rates have to be reduced by three orders of magnitude to comply with the observations. |
| Uitgever: |
Copernicus GmbH (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 19 gevonden artikelen
| << vorige | volgende >> |