Trends in the surface meridional temperature gradient | Zendy

Gitelman Alix I. | Zendy; Risbey James S. | Zendy; Kass Robert E. | Zendy; Rosen Richard D. | Zendy

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Trends in the surface meridional temperature gradient

Author(s) -

Gitelman Alix I.,

Risbey James S.,

Kass Robert E.,

Rosen Richard D.

Publication year - 1997

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/97gl01154

Subject(s) - zonal and meridional , climatology , eddy , temperature gradient , environmental science , middle latitudes , period (music) , geology , atmospheric sciences , geography , meteorology , physics , acoustics , turbulence

Given the presence of a meridional temperature gradient (MTG) across midlatitudes, large‐scale eddies transport heat poleward, thereby shaping Earth's climate. Defining an MTG index here as the difference in surface temperature between the 30°–35°N belt and the 50°–55°N belt, we use a temperature record compiled from observations over a 110‐year period to determine a trend in the MTG in the last century. We find a significant decreasing trend in the MTG over this period of 0.4±0.1°C per 100 years, along with indications of substantial multidecadal variability.

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