Net precipitation of Antarctica: thermodynamical and dynamical parts of the climate change signal

Jens Grieger; Gregor C. Leckebusch; Uwe Ulbrich

doi:10.1175/JCLI-D-14-00787.1

Net precipitation of Antarctica: thermodynamical and dynamical parts of the climate change signal

Jens Grieger, Gregor C. Leckebusch, Uwe Ulbrich

Earth and Environmental Sciences

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11 Citations (Scopus)

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Abstract

This paper investigates climate change signals of Southern Hemisphere (SH) moisture flux simulated by three members of one CMIP3 coupled atmosphere-ocean general circulation model (AOGCM) and a multi-model ensemble of CMIP5 simulations. Generally, flux changes are dominated by increased atmospheric moisture in the atmosphere due to temperature increase in the future climate projections. An approach is presented to distinguish between thermodynamical and dynamical influences on moisture flux. Furthermore, a physical interpretation of the transport changes due to dynamics is investigated by decomposing atmospheric waves into different length scales and temporal variations. Signals of moisture flux are compared with fluctuations of geopotential height fields as well as climate signals of extra-tropical cyclones. Moisture flux variability in the synoptic length scale with temporal variations shorter than 8 days can be assigned to the SH storm track. Climate change signals of these atmospheric waves sh...

Original language	English
Pages (from-to)	907-924
Number of pages	18
Journal	Journal of Climate
Volume	29
Issue number	3
DOIs	https://doi.org/10.1175/JCLI-D-14-00787.1 https://doi.org/10.1175/JCLI-D-14-00787.1
Publication status	Published - 1 Feb 2016

Keywords

Antarctica
Circulation/Dynamics
Climate change
Extratropical cyclones
Geographic location/entity
Hydrologic cycle
Physical Meteorology and Climatology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Grieger_et_al_Net_Precipitation_Antarctica_Journal_Climate_2016
© Copyright 2016 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyrights@ametsoc.org. Validated Feb 2016
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http://www.mendeley.com/research/net-precipitation-antarctica-thermodynamical-dynamical-parts-climate-change-signal

Cite this

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title = "Net precipitation of Antarctica: thermodynamical and dynamical parts of the climate change signal",

abstract = "This paper investigates climate change signals of Southern Hemisphere (SH) moisture flux simulated by three members of one CMIP3 coupled atmosphere-ocean general circulation model (AOGCM) and a multi-model ensemble of CMIP5 simulations. Generally, flux changes are dominated by increased atmospheric moisture in the atmosphere due to temperature increase in the future climate projections. An approach is presented to distinguish between thermodynamical and dynamical influences on moisture flux. Furthermore, a physical interpretation of the transport changes due to dynamics is investigated by decomposing atmospheric waves into different length scales and temporal variations. Signals of moisture flux are compared with fluctuations of geopotential height fields as well as climate signals of extra-tropical cyclones. Moisture flux variability in the synoptic length scale with temporal variations shorter than 8 days can be assigned to the SH storm track. Climate change signals of these atmospheric waves sh...",

keywords = "Antarctica, Circulation/Dynamics, Climate change, Extratropical cyclones, Geographic location/entity, Hydrologic cycle, Physical Meteorology and Climatology",

author = "Jens Grieger and Leckebusch, {Gregor C.} and Uwe Ulbrich",

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AU - Leckebusch, Gregor C.

AU - Ulbrich, Uwe

PY - 2016/2/1

Y1 - 2016/2/1

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AB - This paper investigates climate change signals of Southern Hemisphere (SH) moisture flux simulated by three members of one CMIP3 coupled atmosphere-ocean general circulation model (AOGCM) and a multi-model ensemble of CMIP5 simulations. Generally, flux changes are dominated by increased atmospheric moisture in the atmosphere due to temperature increase in the future climate projections. An approach is presented to distinguish between thermodynamical and dynamical influences on moisture flux. Furthermore, a physical interpretation of the transport changes due to dynamics is investigated by decomposing atmospheric waves into different length scales and temporal variations. Signals of moisture flux are compared with fluctuations of geopotential height fields as well as climate signals of extra-tropical cyclones. Moisture flux variability in the synoptic length scale with temporal variations shorter than 8 days can be assigned to the SH storm track. Climate change signals of these atmospheric waves sh...

KW - Antarctica

KW - Circulation/Dynamics

KW - Climate change

KW - Extratropical cyclones

KW - Geographic location/entity

KW - Hydrologic cycle

KW - Physical Meteorology and Climatology

UR - http://www.mendeley.com/research/net-precipitation-antarctica-thermodynamical-dynamical-parts-climate-change-signal

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DO - 10.1175/JCLI-D-14-00787.1

M3 - Article

SN - 0894-8755

VL - 29

SP - 907

EP - 924

JO - Journal of Climate

JF - Journal of Climate

IS - 3

ER -

Net precipitation of Antarctica: thermodynamical and dynamical parts of the climate change signal

Abstract

Keywords

UN SDGs

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