Isentropic advection and convective lifting of water vapor in the UT – LS as observed over Brazil (22° S) in February 2004 by in situ high-resolution measurements of H2O, CH4, O3 and temperature
Item
Title (Dublin Core)
Isentropic advection and convective lifting of water vapor in the UT – LS as observed over Brazil (22° S) in February 2004 by in situ high-resolution measurements of H2O, CH4, O3 and temperature
Description (Dublin Core)
The micro-SDLA balloonborne diode laser spectrometer was flown twice from Bauru (22° S, Brazil) in February 2004 during HIBISCUS to yield in situ H<sub>2</sub>O measurements in the Upper Troposphere (UT) and Lower Stratosphere (LS) and in particular in the Tropical Tropopause Layer (TTL). The overall TTL was found warmer (with a subsaturated cold point near –79°C) and the LS moister compared to former measurements obtained in tropical oceanic conditions. The use of specific balloons with a slow descent, combined with the high-resolution of the laser sensor, allowed us to observe in situ in the UT, the TTL and the LS several thin layers correlated on H<sub>2</sub>O, CH<sub>4</sub>, O<sub>3</sub>, temperature and PV. A component of these layers is associated with the isentropic transport into the UT- LS of extratropical stratospheric air masses. Moreover, the examination of temperature and tracer (CH<sub>4</sub>, O<sub>3</sub>) profiles gives insights on the potential contribution of convective transport of H<sub>2</sub>O in the TTL.
Creator (Dublin Core)
Durry, G.
Huret, N.
Hauchecorne, A.
Marecal, V.
Pommereau, J.-P.
Jones, R. L.
Held, G.
Larsen, N.
Renard, J.-B.
Date (Dublin Core)
2018-08-09
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acpd-6-12469-2006
https://acp.copernicus.org/preprints/acpd-2006-0373/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
