Java–Sumatra Niño/Niña and Its Impact on Regional Rainfall Variability

Lee, Sang-Ki; Lopez, Hosmay; Foltz, Gregory R.; Lim, Eun-Pa; Kim, Dongmin; Larson, Sarah M.; Pujiana, Kandaga; Volkov, Denis L.; Chakravorty, Soumi; Gomez, Fabian A.

doi:10.1175/JCLI-D-21-0616.1

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i

Java–Sumatra Niño/Niña and Its Impact on Regional Rainfall Variability

2022
By Lee, Sang-Ki ; Lopez, Hosmay ; Foltz, Gregory R. ; ...
Source: Journal of Climate, 35(13), 4291-4308

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Journal Title:

Journal of Climate
Personal Author:

Lee, Sang-Ki ; Lopez, Hosmay ; Foltz, Gregory R. ; Lim, Eun-Pa ; Kim, Dongmin ; ... More +

Lee, Sang-Ki ; Lopez, Hosmay ; Foltz, Gregory R. ; Lim, Eun-Pa ; Kim, Dongmin ; Larson, Sarah M. ; Pujiana, Kandaga ; Volkov, Denis L. ; Chakravorty, Soumi ; Gomez, Fabian A. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies)

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies) Less -
Description:

A phenomenon referred to here as Java–Sumatra Niño/Niña (JSN or JS Niño/Niña) is characterized by the appearance of warm/cold sea surface temperature anomalies (SSTAs) in the coastal upwelling region off Java–Sumatra in the southeastern equatorial Indian Ocean. JSN develops in July–September and sometimes as a precursor to the Indian Ocean dipole, but often without corresponding SSTAs in the western equatorial Indian Ocean. Although its spatiotemporal evolution varies considerably between individual events, JSN is essentially an intrinsic mode of variability driven by local atmosphere–ocean positive feedback, and thus does not rely on remote forcing from the Pacific for its emergence. JSN is an important driver of climate variability over the tropical Indian Ocean and the surrounding continents. Notably, JS Niña events developing in July–September project onto the South and Southeast Asian summer monsoons, increasing the probability of heavy rainfall and flooding across the most heavily populated regions of the world.
Keywords:

[+]

Climatic Changes Ocean Temperature Rain And Rainfall Teleconnections (Climatology) Climate Variability Interannual Variability Oceanic Variability Sea Surface Temperature (SST) Tropical Variability
Source:

Journal of Climate, 35(13), 4291-4308
DOI:

https://doi.org/10.1175/JCLI-D-21-0616.1
Document Type:

Journal Article
Funding:

Grant no. NA19OAR4310282 ; Grant no. NA20OAR4320472

Grant no. NA19OAR4310282 ; Grant no. NA20OAR4320472 Less -
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Submitted
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urn:sha256:c64f3e6972a4d92f2d62b1f4771a118e42e6b5269579fd8115bf9e6d8295fe60
Download URL:

https://repository.library.noaa.gov/view/noaa/41911/noaa_41911_DS1.pdf
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[PDF-6.07 MB]