Authors:	Kaluza, Thorsten Kunkel, Daniel Hoor, Peter
Title:	Analysis of turbulence reports and ERA5 turbulence diagnostics in a tropopause-based vertical framework
Online publication date:	15-Nov-2022
Year of first publication:	2022
Language:	english
Abstract:	In the tropopause region turbulence exhibits a common feature with posing a threat for aviation as well as presenting a pathway for cross tropopause exchange. However, current numerical weather prediction and in particular climate models still struggle to resolve a large part of the dynamics responsible for turbulence generation. This renders high resolution observations of turbulence to be very valuable to identify the spatio-temporal distribution of turbulence. In this study we use aircraft observations along with reanalysis data over the North Atlantic during winter season to analyze turbulence occurrence. Using a tropopause-based coordinate system, we found that turbulence occurs within a sharp unimodal distribution which maximizes just below the tropopause. Turbulence also significantly affects the first 2 km above the tropopause which highlights its potential impact on the formation of the so called extratropical mixing layer around the tropopause.
DDC:	530 Physik 530 Physics 550 Geowissenschaften 550 Earth sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8310
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY-NC
Information on rights of use:	https://creativecommons.org/licenses/by-nc/4.0/
Journal:	Geophysical research letters 49 20
Pages or article number:	e2022GL100036
Publisher:	Wiley
Publisher place:	Hoboken, NJ
Issue date:	2022
ISSN:	1944-8007
Publisher DOI:	10.1029/2022GL100036
Appears in collections:	DFG-491381577-H