edu.ucar.opensky::articles:21408 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T16:08:54.468132 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7gx4f7t https://doi.org/10.5065/D6BG2M1H https Related Dataset #1 High Rate (HRT - 25 sps) Navigation, State Parameter, and Microphysics Flight-Level Data. Version 1.4 https://doi.org/10.5065/D6GM85H9 https Related Dataset #2 DLR Falcon CR2 Data. Version 1.0 https://doi.org/10.5065/D66Q1V8B https Related Dataset #3 Low Rate (LRT - 1 sps) Navigation and State Parameter Flight-Level Data - IWG1 format [. Version 1.2 https://doi.org/10.5065/D6XW4GTB https Related Dataset #4 NSF/NCAR GV HIAPER QC Dropsonde Data. Version 3.0 Mountain waves modulate the water vapor distribution in the UTLS 2017-12-14T00:00:00Z publication https://n2t.org/ark:/85065/d7gx4f7t https://doi.org/10.5194/acp-17-14853-2017 Heller, R. author Voigt, C. author Beaton, Stuart author Dörnbrack, A. author Giez, A. author Kaufmann, S. author Mallaun, C. author Schlager, H. author Wagner, J. author Young, Kathryn author Rapp, M. author UCAR/NCAR - Library publisher The water vapor distribution in the upper troposphere-lower stratosphere (UTLS) region has a strong impact on the atmospheric radiation budget. Transport and mixing processes on different scales mainly determine the water vapor concentration in the UTLS. Here, we investigate the effect of mountain waves on the vertical transport and mixing of water vapor. For this purpose we analyze measurements of water vapor and meteorological parameters recorded by the DLR Falcon and NSF/NCAR Gulfstream V research aircraft taken during the Deep Propagating Gravity Wave Experiment (DEEPWAVE) in New Zealand. By combining different methods, we develop a new approach to quantify location, direction and irreversibility of the water vapor transport during a strong mountain wave event on 4 July 2014. A large positive vertical water vapor flux is detected above the Southern Alps extending from the troposphere to the stratosphere in the altitude range between 7.7 and 13.0 km. Wavelet analysis for the 8.9 km altitude level shows that the enhanced upward water vapor transport above the mountains is caused by mountain waves with horizontal wavelengths between 22 and 60 km. A downward transport of water vapor with 22 km wavelength is observed in the lee-side of the mountain ridge. While it is a priori not clear whether the observed fluxes are irreversible, low Richardson numbers derived from dropsonde data indicate enhanced turbulence in the tropopause region related to the mountain wave event. Together with the analysis of the water vapor to ozone correlation, we find indications for vertical transport followed by irreversible mixing of water vapor. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation