The Lorenz energy cycle: trends and the impact of modes of climate variability

The atmospheric circulation is driven by heat transport from the tropics to the polar regions, embedding energy conversions between available potential and kinetic energy through various mechanisms. The processes of energy transformations related to the dynamics of the atmosphere can be quantitative...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Qiyun Ma, Valerio Lembo, Christian L.E. Franzke
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	lorenz energy cycle climate variability trends Oceanography GC1-1581 Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/e4a8d838b8a64a37b15bd182ee9ae643
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e4a8d838b8a64a37b15bd182ee9ae643
record_format	dspace
spelling	oai:doaj.org-article:e4a8d838b8a64a37b15bd182ee9ae6432021-12-01T14:40:58ZThe Lorenz energy cycle: trends and the impact of modes of climate variability1600-087010.1080/16000870.2021.1900033https://doaj.org/article/e4a8d838b8a64a37b15bd182ee9ae6432021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/16000870.2021.1900033https://doaj.org/toc/1600-0870The atmospheric circulation is driven by heat transport from the tropics to the polar regions, embedding energy conversions between available potential and kinetic energy through various mechanisms. The processes of energy transformations related to the dynamics of the atmosphere can be quantitatively investigated through the Lorenz energy cycle formalism. Here we examine these variations and the impacts of modes of climate variability on the Lorenz energy cycle by using reanalysis data from the Japanese Meteorological Agency (JRA-55). We show that the atmospheric circulation is overall becoming more energetic and efficient. For instance, we find a statistically significant trend in the eddy available potential energy, especially in the transient eddy available potential energy in the Southern Hemisphere. We find significant trends in the conversion rates between zonal available potential and kinetic energy, consistent with an expansion of the Hadley cell, and in the conversion rates between eddy available potential and kinetic energy, suggesting an increase in mid-latitudinal baroclinic instability. We also show that planetary-scale waves dominate the stationary eddy energy, while synoptic-scale waves dominate the transient eddy energy with a significant increasing trend. Our results suggest that interannual variability of the Lorenz energy cycle is determined by modes of climate variability. We find that significant global and hemispheric energy fluctuations are caused by the El Nino-Southern Oscillation, the Arctic Oscillation, the Southern Annular Mode, and the meridional temperature gradient over the Southern Hemisphere.Qiyun MaValerio LemboChristian L.E. FranzkeTaylor & Francis Grouparticlelorenz energy cycleclimate variabilitytrendsOceanographyGC1-1581Meteorology. ClimatologyQC851-999ENTellus: Series A, Dynamic Meteorology and Oceanography, Vol 73, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lorenz energy cycle climate variability trends Oceanography GC1-1581 Meteorology. Climatology QC851-999
spellingShingle	lorenz energy cycle climate variability trends Oceanography GC1-1581 Meteorology. Climatology QC851-999 Qiyun Ma Valerio Lembo Christian L.E. Franzke The Lorenz energy cycle: trends and the impact of modes of climate variability
description	The atmospheric circulation is driven by heat transport from the tropics to the polar regions, embedding energy conversions between available potential and kinetic energy through various mechanisms. The processes of energy transformations related to the dynamics of the atmosphere can be quantitatively investigated through the Lorenz energy cycle formalism. Here we examine these variations and the impacts of modes of climate variability on the Lorenz energy cycle by using reanalysis data from the Japanese Meteorological Agency (JRA-55). We show that the atmospheric circulation is overall becoming more energetic and efficient. For instance, we find a statistically significant trend in the eddy available potential energy, especially in the transient eddy available potential energy in the Southern Hemisphere. We find significant trends in the conversion rates between zonal available potential and kinetic energy, consistent with an expansion of the Hadley cell, and in the conversion rates between eddy available potential and kinetic energy, suggesting an increase in mid-latitudinal baroclinic instability. We also show that planetary-scale waves dominate the stationary eddy energy, while synoptic-scale waves dominate the transient eddy energy with a significant increasing trend. Our results suggest that interannual variability of the Lorenz energy cycle is determined by modes of climate variability. We find that significant global and hemispheric energy fluctuations are caused by the El Nino-Southern Oscillation, the Arctic Oscillation, the Southern Annular Mode, and the meridional temperature gradient over the Southern Hemisphere.
format	article
author	Qiyun Ma Valerio Lembo Christian L.E. Franzke
author_facet	Qiyun Ma Valerio Lembo Christian L.E. Franzke
author_sort	Qiyun Ma
title	The Lorenz energy cycle: trends and the impact of modes of climate variability
title_short	The Lorenz energy cycle: trends and the impact of modes of climate variability
title_full	The Lorenz energy cycle: trends and the impact of modes of climate variability
title_fullStr	The Lorenz energy cycle: trends and the impact of modes of climate variability
title_full_unstemmed	The Lorenz energy cycle: trends and the impact of modes of climate variability
title_sort	lorenz energy cycle: trends and the impact of modes of climate variability
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/e4a8d838b8a64a37b15bd182ee9ae643
work_keys_str_mv	AT qiyunma thelorenzenergycycletrendsandtheimpactofmodesofclimatevariability AT valeriolembo thelorenzenergycycletrendsandtheimpactofmodesofclimatevariability AT christianlefranzke thelorenzenergycycletrendsandtheimpactofmodesofclimatevariability AT qiyunma lorenzenergycycletrendsandtheimpactofmodesofclimatevariability AT valeriolembo lorenzenergycycletrendsandtheimpactofmodesofclimatevariability AT christianlefranzke lorenzenergycycletrendsandtheimpactofmodesofclimatevariability
_version_	1718405028294688768

The Lorenz energy cycle: trends and the impact of modes of climate variability

Ejemplares similares