Estimates of Meridional Atmosphere and Ocean Heat Transports.
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| Title: | Estimates of Meridional Atmosphere and Ocean Heat Transports. |
|---|---|
| Authors: | Trenberth, Kevin E., Caron, Julie M. |
| Source: | Journal of Climate. Aug2001, Vol. 14 Issue 16, p3433. 11p. 7 Graphs. |
| Subjects: | Energy transfer, Atmospheric temperature standard deviations |
| Abstract: | New estimates of the poleward energy transport based on atmospheric reanalyses from the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) and the European Centre for Medium-Range Weather Forecasts are presented. The analysis focuses on the period from February 1985 to April 1989 when there are reliable top-of-the-atmosphere radiation data from the Earth Radiation Budget Experiment. Annual mean poleward transports of atmospheric energy peak at 5.0 ± 0.14 PW at 43°N and with similar values near 40°S, which is much larger than previous estimates. The standard deviation of annual and zonal mean variability from 1979 to 1998 is mostly less than 0.15 PW (1%–3%). Results are evaluated by computing the implied ocean heat transports, utilizing physical constraints, and comparing them with direct oceanographic estimates and those from successful stable coupled climate models that have been run without artificial flux adjustments for several centuries. Reasonable agreement among ocean transports is obtained with the disparate methods when the results from NCEP–NCAR reanalyses based upon residually derived (not model-generated) methods are used, and this suggests that improvements have occurred and convergence is to the true values. Atmospheric transports adjusted for spurious subterranean transports over land areas are inferred and show that poleward ocean heat transports are dominant only between 0° and 17°N. At 35° latitude, at which the peak total poleward transport in each hemisphere occurs, the atmospheric transport accounts for 78% of the total in the Northern Hemisphere and 92% in the Southern Hemisphere. In general, a much greater portion of the required poleward transport is contributed by the atmosphere than the ocean, as compared with previous estimates. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 5856189 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Estimates of Meridional Atmosphere and Ocean Heat Transports. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Trenberth%2C+Kevin+E%2E%22">Trenberth, Kevin E.</searchLink><br /><searchLink fieldCode="AR" term="%22Caron%2C+Julie+M%2E%22">Caron, Julie M.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Climate%22">Journal of Climate</searchLink>. Aug2001, Vol. 14 Issue 16, p3433. 11p. 7 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Energy+transfer%22">Energy transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+temperature+standard+deviations%22">Atmospheric temperature standard deviations</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: New estimates of the poleward energy transport based on atmospheric reanalyses from the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) and the European Centre for Medium-Range Weather Forecasts are presented. The analysis focuses on the period from February 1985 to April 1989 when there are reliable top-of-the-atmosphere radiation data from the Earth Radiation Budget Experiment. Annual mean poleward transports of atmospheric energy peak at 5.0 ± 0.14 PW at 43°N and with similar values near 40°S, which is much larger than previous estimates. The standard deviation of annual and zonal mean variability from 1979 to 1998 is mostly less than 0.15 PW (1%–3%). Results are evaluated by computing the implied ocean heat transports, utilizing physical constraints, and comparing them with direct oceanographic estimates and those from successful stable coupled climate models that have been run without artificial flux adjustments for several centuries. Reasonable agreement among ocean transports is obtained with the disparate methods when the results from NCEP–NCAR reanalyses based upon residually derived (not model-generated) methods are used, and this suggests that improvements have occurred and convergence is to the true values. Atmospheric transports adjusted for spurious subterranean transports over land areas are inferred and show that poleward ocean heat transports are dominant only between 0° and 17°N. At 35° latitude, at which the peak total poleward transport in each hemisphere occurs, the atmospheric transport accounts for 78% of the total in the Northern Hemisphere and 92% in the Southern Hemisphere. In general, a much greater portion of the required poleward transport is contributed by the atmosphere than the ocean, as compared with previous estimates. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=5856189 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1175/1520-0442(2001)014<3433:EOMAAO>2.0.CO;2 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 3433 Subjects: – SubjectFull: Energy transfer Type: general – SubjectFull: Atmospheric temperature standard deviations Type: general Titles: – TitleFull: Estimates of Meridional Atmosphere and Ocean Heat Transports. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Trenberth, Kevin E. – PersonEntity: Name: NameFull: Caron, Julie M. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 08 Text: Aug2001 Type: published Y: 2001 Identifiers: – Type: issn-print Value: 08948755 Numbering: – Type: volume Value: 14 – Type: issue Value: 16 Titles: – TitleFull: Journal of Climate Type: main |
| ResultId | 1 |
