Advective Transport Between the Stratosphere and Mesosphere

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10488687" target="_blank" >RIV/00216208:11320/24:10488687 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=II5uB20wkW" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=II5uB20wkW</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2024JD041902" target="_blank" >10.1029/2024JD041902</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advective Transport Between the Stratosphere and Mesosphere

Popis výsledku v původním jazyce

The Brewer-Dobson circulation (BDC) characterizes the large-scale meridional overturning masscirculation influencing the composition of the whole middle atmosphere. The BDC consists of two separateparts-a shallow branch in the lower stratosphere and a deep branch higher in the middle atmosphere. Climatemodels robustly project the advective BDC part to accelerate due to greenhouse gas-induced climate change andthis acceleration strongly influences middle atmospheric chemistry and physics in the projections. A prominentquantity that is being studied as a proxy for advective BDC changes is the net tropical upwelling across pressurelevels, particularly in the lower stratosphere. The upper branch of the BDC has received considerably lessresearch attention than its shallow part, although, together with the mean mesospheric pole-to-pole circulation,it couples the stratosphere and mesosphere and is responsible for a large portion of the interhemispherictransport in the middle atmosphere. Aiming to fill this gap, we here study climatology and trends in advectivemass transport across the stratopause. Results based on the analysis of seven CCMI models includequantification of the climatological cross-stratopause advective transport, characterization of its interannualvariability and long-term trend as well as detailed analysis of inter-model differences using a noveldecomposition methodology. Our results demonstrate that the changes in circulation speed as well as changes inhorizontal and vertical structure in the upper stratosphere and mesosphere jointly shape the projected increasingadvective mass flux across the stratopause due to increasing greenhouse-gas emissions.

Název v anglickém jazyce

Advective Transport Between the Stratosphere and Mesosphere

Popis výsledku anglicky

The Brewer-Dobson circulation (BDC) characterizes the large-scale meridional overturning masscirculation influencing the composition of the whole middle atmosphere. The BDC consists of two separateparts-a shallow branch in the lower stratosphere and a deep branch higher in the middle atmosphere. Climatemodels robustly project the advective BDC part to accelerate due to greenhouse gas-induced climate change andthis acceleration strongly influences middle atmospheric chemistry and physics in the projections. A prominentquantity that is being studied as a proxy for advective BDC changes is the net tropical upwelling across pressurelevels, particularly in the lower stratosphere. The upper branch of the BDC has received considerably lessresearch attention than its shallow part, although, together with the mean mesospheric pole-to-pole circulation,it couples the stratosphere and mesosphere and is responsible for a large portion of the interhemispherictransport in the middle atmosphere. Aiming to fill this gap, we here study climatology and trends in advectivemass transport across the stratopause. Results based on the analysis of seven CCMI models includequantification of the climatological cross-stratopause advective transport, characterization of its interannualvariability and long-term trend as well as detailed analysis of inter-model differences using a noveldecomposition methodology. Our results demonstrate that the changes in circulation speed as well as changes inhorizontal and vertical structure in the upper stratosphere and mesosphere jointly shape the projected increasingadvective mass flux across the stratopause due to increasing greenhouse-gas emissions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Geophysical Research-Atmospheres

ISSN

2169-897X

e-ISSN

2169-8996

Svazek periodika

129

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

—

Kód UT WoS článku

001372614400001

EID výsledku v databázi Scopus

2-s2.0-85211475072