scholarly journals Cold surge invading the Beijing 2022 Winter Olympic Competition Zones and the predictability in BCC‐AGCM model

2021 ◽  
Author(s):  
Xiang Li ◽  
Hui Gao ◽  
Ting Ding
Keyword(s):  
Cold Surge

scholarly journals Impact of the Radiosonde Observations of Cold Surge over the Philippine Sea on the Tropical Region and the Southern Hemisphere in December 2012

SOLA ◽  
2017 ◽  
Vol 13 (0) ◽  
pp. 19-24 ◽  
Author(s):  
Miki Hattori ◽  
Akira Yamazaki ◽  
Shin-Ya Ogino ◽  
Peiming Wu ◽  
Jun Matsumoto
Keyword(s):  
Southern Hemisphere ◽  
Tropical Region ◽  
Cold Surge ◽  
Philippine Sea

scholarly journals Borneo vortex and meso-scale convective rainfall

2013 ◽  
Vol 13 (8) ◽  
pp. 21079-21124 ◽  
Author(s):  
S. Koseki ◽  
T.-Y. Koh ◽  
C.-K. Teo
Keyword(s):  
South China Sea ◽  
South China ◽  
Convective Rainfall ◽  
Absolute Vorticity ◽  
Wind Pattern ◽  
Cold Surge ◽  
China Sea ◽  
Asian Winter Monsoon ◽  
Budget Analysis ◽  
Vorticity Budget

Abstract. We have investigated how the Borneo vortex develops over the equatorial South China Sea under cold surge conditions in December during the Asian winter monsoon. Composite analysis using reanalysis and satellite datasets has revealed that absolute vorticity and water vapour are transported by strong cold surges from upstream of the South China Sea to around the equator. Rainfall is correspondingly enhanced over the equatorial South China Sea. A semi-idealized experiment reproduced the Borneo vortex over the equatorial South China Sea during a "perpetual" cold surge. The Borneo vortex is manifested as a meso-α cyclone with a comma-shaped rainband in the northeast sector of the cyclone. Vorticity budget analysis showed that the growth of the meso-α cyclone was achieved mainly by vortex stretching. The comma-shaped rainband consists of clusters of meso-β scale rainfall patches. The warm and wet cyclonic southeasterly flow meets with the cold and dry northeasterly surge forming a confluence front in the northeastern sector of the cyclone. Intense upward motion and heavy rainfall result both due to the low-level convergence and the favourable thermodynamic profile at the confluence front. At both meso-α and meso-β scales, the convergence is ultimately caused by the deviatoric strain in the confluence wind pattern but is much enhanced by nonlinear self-enhancement dynamics.

Initial observations of cold surge frequency over Southeast Asia in relation to ENSO-induced anomalies

2015 ◽  
Author(s):  
Ahmad Ridzuan Mohammed Shariff ◽  
Mandeep Singh Jit Singh ◽  
Kalaivani Chellappan ◽  
Wayan Suparta ◽  
Fredolin T. Tangang ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Cold Surge

Monitoring the 2008 cold surge and frozen disasters snowstorm in South China based on regional ATOVS data assimilation

2010 ◽  
Vol 53 (8) ◽  
pp. 1216-1228 ◽  
Author(s):  
QiFeng Lu ◽  
WenJiang Zhang ◽  
Peng Zhang ◽  
XueBao Wu ◽  
FengYing Zhang ◽  
...  
Keyword(s):  
Data Assimilation ◽  
South China ◽  
Cold Surge

Thermodynamic and dynamic structure of atmosphere over the east coast of Peninsular Malaysia during the passage of a cold surge

2016 ◽  
Vol 146 ◽  
pp. 58-68 ◽  
Author(s):  
Azizan Abu Samah ◽  
C.A. Babu ◽  
Hamza Varikoden ◽  
P.R. Jayakrishnan ◽  
Ooi See Hai
Keyword(s):  
East Coast ◽  
Dynamic Structure ◽  
Peninsular Malaysia ◽  
Cold Surge

scholarly journals Interannual Variation of the Cold-Season Rainfall Center in the South China Sea

2017 ◽  
Vol 30 (2) ◽  
pp. 669-688 ◽  
Author(s):  
Tsing-Chang Chen ◽  
Jenq-Dar Tsay ◽  
Jun Matsumoto
Keyword(s):  
South China Sea ◽  
Shear Flow ◽  
South China ◽  
Interannual Variation ◽  
Cold Season ◽  
The Philippines ◽  
The South China Sea ◽  
Enso Cycle ◽  
Cold Surge ◽  
China Sea

During 15 November–31 December, a cold-season rainfall center appears in the southern part of the South China Sea (SCS) north of northwestern Borneo and juxtaposed along the southwest–northeast direction with rainfall centers for the Malay Peninsula and the Philippines. This SCS rainfall center also coincides geographically with the SCS surface trough. An effort is made to explore the formation mechanism of this rainfall center. It is primarily formed by the second intensification of heavy rainfall/flood cold surge vortex [CSV(HRF)] through its interaction with a cold surge flow over the SCS trough. Both the SCS rainfall center and the SCS surface trough are located at the easterly flow north of the near-equator trough. Modulated by the interannual variation of the cyclonic shear flow along the near-equator trough in concert with the El Niño–Southern Oscillation (ENSO) cycle, the SCS rainfall center undergoes an interannual variation. The impact of this ENSO cycle is accomplished through the regulation of CSV(HRF) trajectories originating from the Philippines vicinity and Borneo and propagating to different destinations. Rain-producing efficiency determined by the interannual variation of the divergent circulation accompanies the cyclonic shear flow around the near-equator trough in response to this ENSO cycle.

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