Results 171 to 180 of about 2,670 (210)

Boreal Summer Intraseasonal oscillation convective initiations in S2S models

2023
Boreal summer Intraseasonal Oscillation (BSISO), with its 20–90 day periodicity characterised by northward propagation over the northern Indian Ocean and eastward propagation over the equatorial region, acts as a major source of predictability in the intraseasonal time scale. Predicting the initiation of BSISO over the equatorial Indian Ocean
Daniel Simon, Neena Joseph Mani
openaire   +1 more source

A Model for the Boreal Summer Intraseasonal Oscillation

Journal of the Atmospheric Sciences, 1997
Abstract The tropical intraseasonal oscillation (ISO) exhibits pronounced seasonality. The boreal summer ISO is more complex than its winter counterpart due to the coexistence of equatorial eastward, off-equatorial westward, and northward propagating, low-frequency modes and their interactions.
Bin Wang, Xiaosu Xie
openaire   +1 more source

Structures and Mechanisms of the Northward Propagating Boreal Summer Intraseasonal Oscillation*

Journal of Climate, 2004
Abstract The spatial and temporal structures of the northward-propagating boreal summer intraseasonal oscillation (BSISO) are revealed based on the analysis of both the ECHAM4 model simulation and the NCEP–NCAR reanalysis. The BSISO structure and evolution characteristics simulated by the model bear many similarities to those derived from the NCEP–NCAR
Xianan Jiang, Tim Li, Bin Wang
openaire   +1 more source

Subseasonal Prediction of Extreme Precipitation over Asia: Boreal Summer Intraseasonal Oscillation Perspective

Journal of Climate, 2017
The boreal summer intraseasonal oscillation (BSISO) is one of the most prominent modes in the tropical climate system. For better subseasonal prediction of extreme precipitation the relationship between BSISO activity and extreme precipitation events (days with daily precipitation exceeding the local 90th percentile) over Asia is investigated ...
Sun-Seon Lee, Ja-Yeon Moon, Bin Wang, Hae-Jeong Kim   +3 more
openaire   +1 more source

Cloud and radiative heating profiles associated with the boreal summer intraseasonal oscillation

Climate Dynamics, 2017
The cloud water content (CW) and radiative heating rate (QR) structures related to northward propagating boreal summer intraseasonal oscillations (BSISOs) are analyzed using data from A-train satellites in conjunction with the ERA-Interim reanalysis.
Jinwon Kim, Duane E. Waliser, Gregory V. Cesana, Xianan Jiang, Tristan L’Ecuyer, J. M. Neena   +5 more
openaire   +1 more source

Tropical intraseasonal oscillation at monthly time scale during boreal summer and winter

Climate Dynamics, 2019
This study describes the space–time structure of an intraseasonal oscillation with the time scale of a month over the South Asian monsoon region and the tropical Pacific for the boreal summer and winter seasons. These nonlinear oscillations were extracted by applying multichannel singular spectrum analysis on daily anomalies of three-dimensional ...
V. Krishnamurthy, Abheera Hazra
openaire   +1 more source

Influence of boreal summer intraseasonal oscillation on rainfall extremes in southern China

International Journal of Climatology, 2015
ABSTRACTHow boreal summer intraseasonal oscillation (BSISO) modulates the probability and spatial distributions of extreme rainfall occurrence over populous southern China was examined, using the newly proposedBSISOindices and two high‐resolution rain‐gauge‐based rainfall datasets in China.
Pang‐Chi Hsu, June‐Yi Lee, Kyung‐Ja Ha   +2 more
openaire   +1 more source

Boreal Summer Intraseasonal Meridional Oscillations Over East Asia and Their Influences on Precipitation

Journal of Geophysical Research: Atmospheres, 2022
AbstractThe intraseasonal meridional wave trains are the major features of East Asia summer monsoon (EASM), but the complete physical pictures of dynamic pathways from tropical and mid‐high latitudes and their climate impacts have not been fully illustrated.
Yiming Xu, Xuguang Sun, Xiu‐Qun Yang
openaire   +1 more source

Reinitiation of the Boreal Summer Intraseasonal Oscillation in the Tropical Indian Ocean*

Journal of Climate, 2005
Abstract The characteristic features of the boreal summer intraseasonal oscillation (BSISO) during its reinitiation period are studied using NCEP–NCAR reanalysis. Based on these observations and with the aid of an anomalous atmospheric general circulation model (AGCM), a possible mechanism responsible for the BSISO reinitiation is ...
Tim Li, Xian-An Jiang
openaire   +1 more source

Equatorial Waves and Air–Sea Interaction in the Boreal Summer Intraseasonal Oscillation

Journal of Climate, 2001
Abstract A composite study of the life cycle of the boreal summer intraseasonal oscillation (BSISO) was performed using data from the National Centers for Environmental Prediction–National Center for Atmospheric Research reanalysis and National Oceanic and Atmospheric Administration polar-orbiting satellites.
Susan Kemball-Cook, Bin Wang
openaire   +1 more source