i
Understanding variations of the length and the seasonal rainfall anomalies of the Indian Summer Monsoon
-
2016
Source: Journal of Climate, 30(5), 1753-1763
[PDF-12.95 MB]
Select the Download button to view the document
This document is over 5mb in size and cannot be previewed
Details:
-
Journal Title:Journal of Climate
-
Personal Author:
-
NOAA Program & Office:
-
Description:The canonical relationship between the length and the total seasonal rainfall anomalies of the Indian summer monsoon (ISM) is the association of the longer (shorter) season with wetter (drier) seasonal rainfall anomalies. This study shows that such canonical behavior is clearly associated with relatively strong ENSO SST anomalies in the eastern equatorial Pacific Ocean that appear in the boreal summer and fall seasons. The noncanonical relationship is caused by a longer (shorter) season associated with drier (wetter) ISM seasonal rainfall anomalies. A majority of these noncanonical seasons, with anomalously short season length but anomalously high seasonal mean rain, tend to occur under relatively weak La Niña forcing during the boreal summer season. Although the onset of such seasons occurs through canonical ENSO forcing of a large-scale meridional temperature gradient, the demise is dictated by the depletion of moist static energy from the underlying cooling of the upper ocean in the northern Indian Ocean. This is due to stronger meridional Ekman ocean heat transport forced by the stronger low-level atmospheric southwesterlies than those in the corresponding canonical wet ISM season.
-
Keywords:
-
Source:Journal of Climate, 30(5), 1753-1763
-
Document Type:
-
Funding:
-
Place as Subject:
-
Rights Information:Other
-
Compliance:Submitted
-
Main Document Checksum:urn:sha256:04787c8112ec95a0a987e7e21e8dbec992ddaa2bffc053feaf35f2aac86a7dad
-
File Type:
Supporting Files
-
No Additional Files
More +
Related Documents
-
Asymmetric modulation of El Nino and La Nina and the linkage to tropical Pacific decadal variabilityCitePersonal Author:Okumura, Yuko M. ;Sun, Tianyi...2017 | Journal of Climate, 30(12), 4705-4733.Description:El Niño–Southern Oscillation (ENSO) in a 1300-yr preindustrial control simulation of the Community Climate System Model, version 4 (CCSM4), exhibit...Personal Author:Bukovsky, Melissa S. ;McCrary, Rachel R....2017 | Journal of Climate, 30(20), 8275-8298.Description:Global and regional climate model ensembles project that the annual cycle of rainfall over the southern Great Plains (SGP) will amplify by midcentury....2017 | J. Geophys. Res. Atmos., 122, 2529– 2548Description:The relationships between radiation, clouds, and convection on an intraseasonal time scale are examined with data taken during the Dynamics of the Mad...Personal Author:Ma, Xiaohui ;Chang, Ping...2017 | Journal of Climate, 30(5), 1861-1880.Description:Local and remote atmospheric responses to mesoscale SST anomalies associated with the oceanic front and eddies in the Kuroshio Extension region (KER) ...Personal Author:Henderson, Stephanie A. ;Maloney, Eric D....2017 | Journal of Climate, 30(12), 4567-4587.Description:Teleconnection patterns associated with the Madden–Julian oscillation (MJO) significantly alter extratropical circulations, impacting weather and cl...Personal Author:Booth, James F. ;Kwon, Young-Oh...2017 | ournal of Climate, 30(13), 4965-4981.Description:To improve the understanding of storm tracks and western boundary current (WBC) interactions, surface storm tracks in 12 CMIP5 models are examined aga...Improved ENSO forecasting using Bayesian updating and the North American Multi Model Ensemble (NMME)CitePersonal Author:Zhang, Wei ;Villarini, Gabriele...2017 | Journal of Climate, 30(22), 9007-9025Description:This study assesses the forecast skill of eight North American Multimodel Ensemble (NMME) models in predicting Niño-3/-3.4 indices and improves their...2017 | J. Geophys. Res. Atmos., 122, 7493– 7504Description:A common problem in climate models is that they are likely to produce rain at a faster rate than is observed and therefore produce too much light rain...Personal Author:Partain, James L. ;Alden, Sharon...2016 | Bulletin of the American Meteorological Society, 97(12), S14-S18Description:The 2015 Alaska fire season burned 5.1million acres, the second largest burned area since1940, exceeded only by the 2004 Alaska fire seasonwhen 6.2 mi...Personal Author:Wang, Lu ;Li, Tim...2017 | Journal of Climate, 30(10), 3743-3769.Description:This study investigates the fundamental causes of differences in the Madden–Julian oscillation (MJO) eastward propagation among models that particip...Personal Author:Barnston, Anthony G. ;Tippett, Michael K.2017 | Journal of Climate, 30(20), 8335-8355.Description:Canonical correlation analysis (CCA)-based statistical corrections are applied to seasonal mean precipitation and temperature hindcasts of the individ...Personal Author:Seager, Richard ;Henderson, Naomi2016 | Journal of Climate, 29(22), 8027-8049.Description:The causes of the high pressure ridge at the North American west coast during winter 2013/14, the driest winter of the recent California drought, are ...Personal Author:Huang, Danqing ;Dai, Aiguo...2017 | Journal of Climate, 30(12), 4443-4462.Description:Global-mean surface temperature has experienced fast warming during 1985–98 but stabilized during 1999–2013, especially in boreal winter. Climate ...Personal Author:Luo, Dehai ;Yao, Yao...2017 | Journal of Climate, 30(10), 3569-3587.Description:In Part I of this study, it was shown that the Eurasian cold anomalies related to Arctic warming depend strongly on the quasi stationarity and persist...Personal Author:Dai, Ying ;Feldstein, Steven B....2017 | Journal of Climate, 30(9), 3139-3155.Description:The mechanisms that drive the Pacific–North American (PNA) teleconnection pattern with and without its canonical tropical convection pattern are inv...Personal Author:Quinn, Kevin M. ;Neelin, J. David2017 | Journal of Climate, 30(20), 8045-8059.Description:Distributions of precipitation cluster power (latent heat release rate integrated over contiguous precipitating pixels) are examined in 1°–2°-reso...Personal Author:DelSole, Timothy ;Banerjee, Arindam2016 | Journal of Climate, 30(4), 1345-1361.Description:This paper proposes a regularized regression procedure for finding a predictive relation between one variable and a field of other variables. The proc...Personal Author:Serra, Yolande L. ;Geil, Kerrie2016 | Journal of Climate, 30(7), 2269-2294Description:The tracks of westward-propagating synoptic disturbances across the Intra-Americas Sea (IAS) and far-eastern Pacific, known as easterly waves or tropi...Personal Author:Teng, Haiyan ;Branstator, Grant2016 | Journal of Climate, 30(4), 1477-1492Description:California droughts are often caused by high-amplitude and persistent ridges near and off the west coast of North America without apparent connections...
More +
You May Also Like
Personal Author:
Deser, Clara ;
Simpson, Isla R.
...
2018 | Journal of Climate, 31(13), 4991-5014
Description:
The role of sampling variability in ENSO composites of winter surface air temperature and precipitation over North America during the period 1920–20...
2022 | Geophysical Research Letters, 49, e2021GL096944
Description:
Satellite and in-situ measurements are used in this study to investigate a possible link between the Florida Current transport (FCT) and temperature c...
Checkout today's featured content at repository.library.noaa.gov