The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
On the Delayed Coupling Between Ocean and Atmosphere in Recent Weak El Niño Episodes
-
2019
-
-
Source: Geophysical Research Letters, 46(20), 11416-11425
[PDF-3.66 MB]
Details:
-
Journal Title:Geophysical Research Letters
-
Personal Author:
-
NOAA Program & Office:
-
Description:The recent borderline El Niño events of 2014/2015 and 2018/2019 provided operational centers with unique challenges because of the apparent absence of typical coupling between the tropical atmosphere and ocean before onset. The mismatch between atmosphere and ocean raises questions about its causes and predictability. Here we analyze observational data since 1979 to show that a sea surface temperature pattern characterized by an anomalous gradient in the western and central equatorial Pacific played a critical role in inhibiting the expected onset of central tropical Pacific deep convection during these events. This sea surface temperature pattern, which produces an atmospheric response that opposes the response to elevated eastern Pacific sea surface temperatures, has become more prevalent over the past 40 years.
-
Keywords:
-
Source:Geophysical Research Letters, 46(20), 11416-11425
-
DOI:
-
ISSN:0094-8276;1944-8007;
-
Format:
-
Publisher:
-
Document Type:
-
Funding:
-
License:
-
Rights Information:CC BY
-
Compliance:CHORUS
-
Main Document Checksum:
-
Download URL:
-
File Type:
