Interannual and interdecadal variability in United States surface-air temperatures
Abstract. Monthly mean surface-air temperatures at 870 sites in the contiguous United States were analyzed for interannual nd interdecadal v riability over the time interval 1910-87. The tempera-tures were analyzed spatially by empirical-orthogonal-function analysis and temporally by singular-spectr...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.482.7409 2023-05-15T17:34:21+02:00 Interannual and interdecadal variability in United States surface-air temperatures Michael D. Dettinger Michael Ghil Christian L. Keppenne The Pennsylvania State University CiteSeerX Archives 1910 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.7409 http://tenaya.ucsd.edu/~dettinge/hcn_temps95.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.7409 http://tenaya.ucsd.edu/~dettinge/hcn_temps95.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://tenaya.ucsd.edu/~dettinge/hcn_temps95.pdf text 1910 ftciteseerx 2016-01-08T08:00:24Z Abstract. Monthly mean surface-air temperatures at 870 sites in the contiguous United States were analyzed for interannual nd interdecadal v riability over the time interval 1910-87. The tempera-tures were analyzed spatially by empirical-orthogonal-function analysis and temporally by singular-spectrum analysis (SSA). The dominant modes of spatio-temporal variability are trends and non-periodic variations with time scales longer than 15 years, decadal-scale oscillations with periods of roughly 7 and 10 years, and interannual oscillations of 2.2 and 3.3 years. Together, these modes contribute about 18 % of the slower-than-annual United States temperature variance. Two leading components roughly capture the m an hemispheric temperature trend and represent a long-term warming, largest in the southwest, accompanied by cooling of the domain's outheastern quadrant. The extremes of the 2.2-year interannual oscillation characterize temperature differences b tw en the Northeastern and Southwestern States, whereas the 3.3-year cycle is p esent mostly in the West-ern States. The 7- to 10-year oscillations are rauch less regular and persistent than the interannual oscillations and characterize temperature differences b tw en the western and interior sectors of the United States. These continental- orregionat-scale temperature variations may be related to climatic variations with similar periodicities, either global r centered in other regions; such variations include quasi-biennial oscillations over the tropical Pacific or North Atlantic and quasi-triennial oscillations of North Pacific sea-surface temperatures. 1. Text North Atlantic Unknown Pacific |
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English |
description |
Abstract. Monthly mean surface-air temperatures at 870 sites in the contiguous United States were analyzed for interannual nd interdecadal v riability over the time interval 1910-87. The tempera-tures were analyzed spatially by empirical-orthogonal-function analysis and temporally by singular-spectrum analysis (SSA). The dominant modes of spatio-temporal variability are trends and non-periodic variations with time scales longer than 15 years, decadal-scale oscillations with periods of roughly 7 and 10 years, and interannual oscillations of 2.2 and 3.3 years. Together, these modes contribute about 18 % of the slower-than-annual United States temperature variance. Two leading components roughly capture the m an hemispheric temperature trend and represent a long-term warming, largest in the southwest, accompanied by cooling of the domain's outheastern quadrant. The extremes of the 2.2-year interannual oscillation characterize temperature differences b tw en the Northeastern and Southwestern States, whereas the 3.3-year cycle is p esent mostly in the West-ern States. The 7- to 10-year oscillations are rauch less regular and persistent than the interannual oscillations and characterize temperature differences b tw en the western and interior sectors of the United States. These continental- orregionat-scale temperature variations may be related to climatic variations with similar periodicities, either global r centered in other regions; such variations include quasi-biennial oscillations over the tropical Pacific or North Atlantic and quasi-triennial oscillations of North Pacific sea-surface temperatures. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Michael D. Dettinger Michael Ghil Christian L. Keppenne |
spellingShingle |
Michael D. Dettinger Michael Ghil Christian L. Keppenne Interannual and interdecadal variability in United States surface-air temperatures |
author_facet |
Michael D. Dettinger Michael Ghil Christian L. Keppenne |
author_sort |
Michael D. Dettinger |
title |
Interannual and interdecadal variability in United States surface-air temperatures |
title_short |
Interannual and interdecadal variability in United States surface-air temperatures |
title_full |
Interannual and interdecadal variability in United States surface-air temperatures |
title_fullStr |
Interannual and interdecadal variability in United States surface-air temperatures |
title_full_unstemmed |
Interannual and interdecadal variability in United States surface-air temperatures |
title_sort |
interannual and interdecadal variability in united states surface-air temperatures |
publishDate |
1910 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.7409 http://tenaya.ucsd.edu/~dettinge/hcn_temps95.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://tenaya.ucsd.edu/~dettinge/hcn_temps95.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.7409 http://tenaya.ucsd.edu/~dettinge/hcn_temps95.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766133161653174272 |