An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation

In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Holt, L. A [verfasserIn] Alexander, M. J Coy, L Liu, C Molod, A Putman, W Pawson, S

Format:	Artikel
Sprache:	Englisch

Erschienen:	2017

Rechteinformationen:	Nutzungsrecht: © 2017 Royal Meteorological Society

Schlagwörter:	gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis

Systematik:	UA 7650

Übergeordnetes Werk:	Enthalten in: Quarterly journal of the Royal Meteorological Society - Reading : Soc., 1873, 143(2017), 707, Seite 2481-2495
Übergeordnetes Werk:	volume:143 ; year:2017 ; number:707 ; pages:2481-2495

Links:	Volltext Link aufrufen Link aufrufen

DOI / URN:	10.1002/qj.3101

Katalog-ID:	OLC1996835556

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245	1	3	\|a An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation
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520			\|a In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources.
540			\|a Nutzungsrecht: © 2017 Royal Meteorological Society
650		4	\|a gravity wave momentum flux
650		4	\|a gravity wave sources
650		4	\|a Southern Hemisphere
650		4	\|a non‐orographic gravity waves
650		4	\|a high‐resolution climate simulation
650		4	\|a gravity waves
650		4	\|a Momentum
650		4	\|a Wind shear
650		4	\|a Orographic waves
650		4	\|a Gravity
650		4	\|a Rainfall
650		4	\|a Simulation
650		4	\|a Precipitation
650		4	\|a Satellites
650		4	\|a Stratosphere
650		4	\|a Winter
650		4	\|a Wavelengths
650		4	\|a Evaluation
650		4	\|a Global climate
650		4	\|a Gravitational waves
650		4	\|a Gravity waves
650		4	\|a Atmospheric pressure
650		4	\|a Waves
650		4	\|a Momentum flux
650		4	\|a Wavelength
650		4	\|a Wave generation
650		4	\|a Fluctuations
650		4	\|a Momentum transfer
650		4	\|a Frontogenesis
700	1		\|a Alexander, M. J \|4 oth
700	1		\|a Coy, L \|4 oth
700	1		\|a Liu, C \|4 oth
700	1		\|a Molod, A \|4 oth
700	1		\|a Putman, W \|4 oth
700	1		\|a Pawson, S \|4 oth
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allfields	10.1002/qj.3101 doi PQ20171228 (DE-627)OLC1996835556 (DE-599)GBVOLC1996835556 (PRQ)p1291-126221c9d1dcdd9e133c88b0352ba2d1949a1bda888c6c9b783d17ca6d66adaa3 (KEY)0013343420170000143070702481evaluationofgravitywavesandgravitywavesourcesinthe DE-627 ger DE-627 rakwb eng 550 DNB UA 7650 AVZ rvk Holt, L. A verfasserin aut An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources. Nutzungsrecht: © 2017 Royal Meteorological Society gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis Alexander, M. J oth Coy, L oth Liu, C oth Molod, A oth Putman, W oth Pawson, S oth Enthalten in Quarterly journal of the Royal Meteorological Society Reading : Soc., 1873 143(2017), 707, Seite 2481-2495 (DE-627)129079324 (DE-600)3142-2 (DE-576)014411946 0035-9009 nnns volume:143 year:2017 number:707 pages:2481-2495 http://dx.doi.org/10.1002/qj.3101 Volltext http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract https://search.proquest.com/docview/1957823130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_4311 UA 7650 AR 143 2017 707 2481-2495
spelling	10.1002/qj.3101 doi PQ20171228 (DE-627)OLC1996835556 (DE-599)GBVOLC1996835556 (PRQ)p1291-126221c9d1dcdd9e133c88b0352ba2d1949a1bda888c6c9b783d17ca6d66adaa3 (KEY)0013343420170000143070702481evaluationofgravitywavesandgravitywavesourcesinthe DE-627 ger DE-627 rakwb eng 550 DNB UA 7650 AVZ rvk Holt, L. A verfasserin aut An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources. Nutzungsrecht: © 2017 Royal Meteorological Society gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis Alexander, M. J oth Coy, L oth Liu, C oth Molod, A oth Putman, W oth Pawson, S oth Enthalten in Quarterly journal of the Royal Meteorological Society Reading : Soc., 1873 143(2017), 707, Seite 2481-2495 (DE-627)129079324 (DE-600)3142-2 (DE-576)014411946 0035-9009 nnns volume:143 year:2017 number:707 pages:2481-2495 http://dx.doi.org/10.1002/qj.3101 Volltext http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract https://search.proquest.com/docview/1957823130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_4311 UA 7650 AR 143 2017 707 2481-2495
allfields_unstemmed	10.1002/qj.3101 doi PQ20171228 (DE-627)OLC1996835556 (DE-599)GBVOLC1996835556 (PRQ)p1291-126221c9d1dcdd9e133c88b0352ba2d1949a1bda888c6c9b783d17ca6d66adaa3 (KEY)0013343420170000143070702481evaluationofgravitywavesandgravitywavesourcesinthe DE-627 ger DE-627 rakwb eng 550 DNB UA 7650 AVZ rvk Holt, L. A verfasserin aut An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources. Nutzungsrecht: © 2017 Royal Meteorological Society gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis Alexander, M. J oth Coy, L oth Liu, C oth Molod, A oth Putman, W oth Pawson, S oth Enthalten in Quarterly journal of the Royal Meteorological Society Reading : Soc., 1873 143(2017), 707, Seite 2481-2495 (DE-627)129079324 (DE-600)3142-2 (DE-576)014411946 0035-9009 nnns volume:143 year:2017 number:707 pages:2481-2495 http://dx.doi.org/10.1002/qj.3101 Volltext http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract https://search.proquest.com/docview/1957823130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_4311 UA 7650 AR 143 2017 707 2481-2495
allfieldsGer	10.1002/qj.3101 doi PQ20171228 (DE-627)OLC1996835556 (DE-599)GBVOLC1996835556 (PRQ)p1291-126221c9d1dcdd9e133c88b0352ba2d1949a1bda888c6c9b783d17ca6d66adaa3 (KEY)0013343420170000143070702481evaluationofgravitywavesandgravitywavesourcesinthe DE-627 ger DE-627 rakwb eng 550 DNB UA 7650 AVZ rvk Holt, L. A verfasserin aut An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources. Nutzungsrecht: © 2017 Royal Meteorological Society gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis Alexander, M. J oth Coy, L oth Liu, C oth Molod, A oth Putman, W oth Pawson, S oth Enthalten in Quarterly journal of the Royal Meteorological Society Reading : Soc., 1873 143(2017), 707, Seite 2481-2495 (DE-627)129079324 (DE-600)3142-2 (DE-576)014411946 0035-9009 nnns volume:143 year:2017 number:707 pages:2481-2495 http://dx.doi.org/10.1002/qj.3101 Volltext http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract https://search.proquest.com/docview/1957823130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_4311 UA 7650 AR 143 2017 707 2481-2495
allfieldsSound	10.1002/qj.3101 doi PQ20171228 (DE-627)OLC1996835556 (DE-599)GBVOLC1996835556 (PRQ)p1291-126221c9d1dcdd9e133c88b0352ba2d1949a1bda888c6c9b783d17ca6d66adaa3 (KEY)0013343420170000143070702481evaluationofgravitywavesandgravitywavesourcesinthe DE-627 ger DE-627 rakwb eng 550 DNB UA 7650 AVZ rvk Holt, L. A verfasserin aut An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources. Nutzungsrecht: © 2017 Royal Meteorological Society gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis Alexander, M. J oth Coy, L oth Liu, C oth Molod, A oth Putman, W oth Pawson, S oth Enthalten in Quarterly journal of the Royal Meteorological Society Reading : Soc., 1873 143(2017), 707, Seite 2481-2495 (DE-627)129079324 (DE-600)3142-2 (DE-576)014411946 0035-9009 nnns volume:143 year:2017 number:707 pages:2481-2495 http://dx.doi.org/10.1002/qj.3101 Volltext http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract https://search.proquest.com/docview/1957823130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_62 GBV_ILN_154 GBV_ILN_601 GBV_ILN_4311 UA 7650 AR 143 2017 707 2481-2495
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source	Enthalten in Quarterly journal of the Royal Meteorological Society 143(2017), 707, Seite 2481-2495 volume:143 year:2017 number:707 pages:2481-2495
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topic_facet	gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis
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author	Holt, L. A
spellingShingle	Holt, L. A ddc 550 rvk UA 7650 misc gravity wave momentum flux misc gravity wave sources misc Southern Hemisphere misc non‐orographic gravity waves misc high‐resolution climate simulation misc gravity waves misc Momentum misc Wind shear misc Orographic waves misc Gravity misc Rainfall misc Simulation misc Precipitation misc Satellites misc Stratosphere misc Winter misc Wavelengths misc Evaluation misc Global climate misc Gravitational waves misc Gravity waves misc Atmospheric pressure misc Waves misc Momentum flux misc Wavelength misc Wave generation misc Fluctuations misc Momentum transfer misc Frontogenesis An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation
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topic_title	550 DNB UA 7650 AVZ rvk An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation gravity wave momentum flux gravity wave sources Southern Hemisphere non‐orographic gravity waves high‐resolution climate simulation gravity waves Momentum Wind shear Orographic waves Gravity Rainfall Simulation Precipitation Satellites Stratosphere Winter Wavelengths Evaluation Global climate Gravitational waves Gravity waves Atmospheric pressure Waves Momentum flux Wavelength Wave generation Fluctuations Momentum transfer Frontogenesis
topic	ddc 550 rvk UA 7650 misc gravity wave momentum flux misc gravity wave sources misc Southern Hemisphere misc non‐orographic gravity waves misc high‐resolution climate simulation misc gravity waves misc Momentum misc Wind shear misc Orographic waves misc Gravity misc Rainfall misc Simulation misc Precipitation misc Satellites misc Stratosphere misc Winter misc Wavelengths misc Evaluation misc Global climate misc Gravitational waves misc Gravity waves misc Atmospheric pressure misc Waves misc Momentum flux misc Wavelength misc Wave generation misc Fluctuations misc Momentum transfer misc Frontogenesis
topic_unstemmed	ddc 550 rvk UA 7650 misc gravity wave momentum flux misc gravity wave sources misc Southern Hemisphere misc non‐orographic gravity waves misc high‐resolution climate simulation misc gravity waves misc Momentum misc Wind shear misc Orographic waves misc Gravity misc Rainfall misc Simulation misc Precipitation misc Satellites misc Stratosphere misc Winter misc Wavelengths misc Evaluation misc Global climate misc Gravitational waves misc Gravity waves misc Atmospheric pressure misc Waves misc Momentum flux misc Wavelength misc Wave generation misc Fluctuations misc Momentum transfer misc Frontogenesis
topic_browse	ddc 550 rvk UA 7650 misc gravity wave momentum flux misc gravity wave sources misc Southern Hemisphere misc non‐orographic gravity waves misc high‐resolution climate simulation misc gravity waves misc Momentum misc Wind shear misc Orographic waves misc Gravity misc Rainfall misc Simulation misc Precipitation misc Satellites misc Stratosphere misc Winter misc Wavelengths misc Evaluation misc Global climate misc Gravitational waves misc Gravity waves misc Atmospheric pressure misc Waves misc Momentum flux misc Wavelength misc Wave generation misc Fluctuations misc Momentum transfer misc Frontogenesis
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title	An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation
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title_full	An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation
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title_sort	evaluation of gravity waves and gravity wave sources in the southern hemisphere in a 7 km global climate simulation
title_auth	An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation
abstract	In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources.
abstractGer	In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources.
abstract_unstemmed	In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. Southern Hemisphere winter sources of non‐orographic GWs in the model are then investigated by linking measures of tropospheric non‐orographic gravity wave generation tied to precipitation and frontogenesis with absolute gravity wave momentum flux in the lower stratosphere. Finally, non‐orographic GW momentum flux is compared to orographic gravity wave momentum flux and compared to previous estimates. The results show that the global patterns in GW amplitude, horizontal wavelength, and propagation direction are realistic compared to observations. However, as in other global models, the amplitudes are weaker and horizontal wavelengths longer than observed. The global patterns in absolute GW momentum flux also agree well with previous model and observational estimates. The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources.
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title_short	An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation
url	http://dx.doi.org/10.1002/qj.3101 http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract https://search.proquest.com/docview/1957823130
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author2	Alexander, M. J Coy, L Liu, C Molod, A Putman, W Pawson, S
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up_date	2024-07-04T01:30:41.710Z
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A</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="3"><subfield code="a">An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2017</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">In this study, gravity waves (GWs) in the high‐resolution GEOS‐5 Nature Run are first evaluated with respect to satellite and other model results. 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The evaluation of model non‐orographic GW sources in the Southern Hemisphere winter shows that strong intermittent precipitation (greater than 10 mm h −1 ) is associated with GW momentum flux over the South Pacific, whereas frontogenesis and less intermittent, lower precipitation rates (less than 10 mm h −1 ) are associated with GW momentum flux near 60°S. In the model, orographic GWs contribute almost exclusively to a peak in zonal mean momentum flux between 70 and 75°S, while non‐orographic waves dominate at 60°S, and non‐orographic GWs contribute a third to a peak in zonal mean momentum flux between 25 and 30°S. Small‐scale gravity waves like the ones shown here from the high‐resolution climate simulation used in this study are important drivers of circulation and transport in the middle atmosphere, and they are currently included in most climate models via parametrizations. However, parametrizations remain poorly constrained because the relative importance of different gravity wave sources is still not completely understood. This study utilizes a high‐resolution climate simulation which resolves much of the gravity wave spectrum to link gravity waves to their sources.</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">Nutzungsrecht: © 2017 Royal Meteorological Society</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">gravity wave momentum flux</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">gravity wave sources</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Southern Hemisphere</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">non‐orographic gravity waves</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">high‐resolution climate simulation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">gravity waves</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Momentum</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Wind shear</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Orographic waves</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Gravity</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Rainfall</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Simulation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Precipitation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Satellites</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Stratosphere</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Winter</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Wavelengths</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Evaluation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Global climate</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Gravitational waves</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Gravity waves</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Atmospheric pressure</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Waves</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Momentum flux</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Wavelength</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Wave generation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Fluctuations</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Momentum transfer</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Frontogenesis</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Alexander, M. J</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Coy, L</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Liu, C</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Molod, A</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Putman, W</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Pawson, S</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Quarterly journal of the Royal Meteorological Society</subfield><subfield code="d">Reading : Soc., 1873</subfield><subfield code="g">143(2017), 707, Seite 2481-2495</subfield><subfield code="w">(DE-627)129079324</subfield><subfield code="w">(DE-600)3142-2</subfield><subfield code="w">(DE-576)014411946</subfield><subfield code="x">0035-9009</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:143</subfield><subfield code="g">year:2017</subfield><subfield code="g">number:707</subfield><subfield code="g">pages:2481-2495</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">http://dx.doi.org/10.1002/qj.3101</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">http://onlinelibrary.wiley.com/doi/10.1002/qj.3101/abstract</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">https://search.proquest.com/docview/1957823130</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-GEO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_62</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_154</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_601</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4311</subfield></datafield><datafield tag="936" ind1="r" ind2="v"><subfield code="a">UA 7650</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">143</subfield><subfield code="j">2017</subfield><subfield code="e">707</subfield><subfield code="h">2481-2495</subfield></datafield></record></collection>
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An evaluation of gravity waves and gravity wave sources in the Southern Hemisphere in a 7 km global climate simulation

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