A Multivariate AMV Index and Associated Discrepancies Between Observed and CMIP5 Externally Forced AMV

Yan, Xiaoqin; Zhang, Rong; Knutson, Thomas R.

doi:10.1029/2019gl082787

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

A Multivariate AMV Index and Associated Discrepancies Between Observed and CMIP5 Externally Forced AMV

2019
By Yan, Xiaoqin ; Zhang, Rong ; Knutson, Thomas R.
Source: Geophysical Research Letters, 46(8), 4421-4431

[PDF-8.17 MB]

Select the Download button to view the document

This document is over 5mb in size and cannot be previewed

Details Supporting Files You May Also Like

Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Yan, Xiaoqin ; Zhang, Rong ; Knutson, Thomas R.

Yan, Xiaoqin ; Zhang, Rong ; Knutson, Thomas R. Less -
NOAA Program & Office:

GFDL (Geophysical Fluid Dynamics Laboratory) ; OAR (Oceanic and Atmospheric Research)

GFDL (Geophysical Fluid Dynamics Laboratory) ; OAR (Oceanic and Atmospheric Research) Less -
Description:

Atlantic Multidecadal Variability (AMV) is a multivariate phenomenon. Here for the first time we obtain a multivariate AMV index and associated patterns using Multivariate Empirical Orthogonal Function (MEOF) analysis to explore the multivariate nature of AMV. Coherent multidecadal variability that is unique to the Atlantic is found in the observed MEOF‐extracted AMV, various AMV‐related indices, and an Atlantic Meridional Overturning Circulation fingerprint. When the signal associated with global mean sea surface temperature is removed from both observations and Coupled Model Intercomparison Project Phase 5 (CMIP5) simulations, the residual CMIP5 forced basin‐wide sea surface temperature‐based AMV index disagrees strongly with the observed residual. Only the observed residual basin‐wide sea surface temperature‐based AMV index retains a strong AMV signal. The MEOF approach still extracts a residual CMIP5 forced AMV signal that is unique to the Atlantic, although very different from observations. Our findings suggest that the observed AMV is not dominated by external forcing.
Keywords:

[+]

General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 46(8), 4421-4431
DOI:

https://doi.org/10.1029/2019gl082787
ISSN:

0094-8276;1944-8007;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Library
Main Document Checksum:

[+]

urn:sha-512:06b49b730c0ad3a3cd2b69e02f38c71f69ce141c7b86f647a12d33dabdf23798750687dbad3a53b9eac5667604dcc07e52f93702935c60b2bcfdbb941cd98977
Download URL:

https://repository.library.noaa.gov/view/noaa/63935/noaa_63935_DS1.pdf
File Type:

Machine readable version (XML)

xml

More +