The effect of convective injection of ice on stratospheric water vapor in a changing climate
Publication Date
2022-05-02Journal Title
Geophysical Research Letters
ISSN
0094-8276
Publisher
American Geophysical Union (AGU)
Volume
49
Issue
9
Language
en
Type
Article
This Version
AO
VoR
Metadata
Show full item recordAbstract
Abstract: Stratospheric water vapor affects the Earth's radiative balance and stratospheric chemistry, yet its future changes are uncertain and not fully understood. The influence of deep convection on stratospheric water vapor remains subject to debate. This letter presents a detailed process‐based model study of the impact of convective ice sublimation on stratospheric water vapor in response to CO2 forced climate change. The influence of convective injection is found to be limited by the vertical profile of temperature and saturation vapor pressure in the tropical tropopause layer, not by the frequency of occurrence. Lagrangian trajectory analysis shows the relative contributions to stratospheric water vapor from sublimation and large‐scale transport are approximately unchanged when CO2 is increased. The results indicate the role of convective ice injection for stratospheric water vapor in a warmer climate remains constrained by large‐scale temperatures.
Keywords
Climate, ATMOSPHERIC COMPOSITION AND STRUCTURE, Middle atmosphere: composition and chemistry, Middle atmosphere: constituent transport and chemistry, Air/sea constituent fluxes, Middle atmosphere: energy deposition, Volcanic effects, BIOGEOSCIENCES, Climate dynamics, Modeling, COMPUTATIONAL GEOPHYSICS, Numerical solutions, CRYOSPHERE, Avalanches, Mass balance, GEODESY AND GRAVITY, Ocean monitoring with geodetic techniques, Ocean/Earth/atmosphere/hydrosphere/cryosphere interactions, Global change from geodesy, GLOBAL CHANGE, Global climate models, Impacts of global change, Abrupt/rapid climate change, Climate variability, Earth system modeling, Land/atmosphere interactions, Oceans, Regional climate change, Sea level change, Solid Earth, Water cycles, HYDROLOGY, Climate impacts, Hydrological cycles and budgets, INFORMATICS, MARINE GEOLOGY AND GEOPHYSICS, Gravity and isostasy, ATMOSPHERIC PROCESSES, Stratosphere/troposphere interactions, Climate change and variability, Climatology, General circulation, Middle atmosphere dynamics, Ocean/atmosphere interactions, Regional modeling, Theoretical modeling, OCEANOGRAPHY: GENERAL, Climate and interannual variability, Numerical modeling, NATURAL HAZARDS, Atmospheric, Geological, Oceanic, Physical modeling, Climate impact, Risk, Disaster risk analysis and assessment, OCEANOGRAPHY: PHYSICAL, Air/sea interactions, Decadal ocean variability, Ocean influence of Earth rotation, Sea level: variations and mean, Surface waves and tides, Tsunamis and storm surges, PALEOCEANOGRAPHY, POLICY SCIENCES, Benefit‐cost analysis, RADIO SCIENCE, Radio oceanography, SEISMOLOGY, Earthquake ground motions and engineering seismology, Volcano seismology, VOLCANOLOGY, Volcano/climate interactions, Atmospheric effects, Volcano monitoring, Effusive volcanism, Mud volcanism, Explosive volcanism, Volcanic hazards and risks, Research Letter, stratospheric water vapor, tropical tropopause, deep convection, climate model, Lagrangian trajectories
Sponsorship
UKRI | Natural Environment Research Council (NERC) (NE/M009920/1, NE/M018199/1)
Leverhulme Trust (PLP‐2018‐278)
Horizon 2020 CONSTRAIN project (820829)
Identifiers
grl64051, 2021gl097386
External DOI: https://doi.org/10.1029/2021gl097386
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336694
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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