scholarly journals Indo-China Monsoon Indices

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
ChinLeong Tsai ◽  
Swadhin K. Behera ◽  
Takuji Waseda
Keyword(s):  
Monsoon Indices

A study of Holocene Asian summer and winter monsoon change by an analog of climate factors between millennial and modern interannual scales

2019 ◽  
Vol 44 (3) ◽  
pp. 315-337
Author(s):  
Yu Li ◽  
Yichan Li ◽  
Wangting Ye ◽  
Simin Peng
Keyword(s):  
Asian Monsoon ◽  
East Asian Monsoon ◽  
East Asian ◽  
Driving Mechanism ◽  
Climatic Data ◽  
Low Latitude ◽  
Global Circulation ◽  
Asian Summer ◽  
Winter Insolation ◽  
Monsoon Indices

The East Asian monsoon exerts a profound influence on environmental change in the East Asian region. Various factors have been hypothesized as the dominant Asian monsoon forcings, however, the forcings can change from interannual to millennial timescales. The linkages between monsoon forcings at different timescales remain unclear. To better understand the connection of the variabilities and mechanisms of the East Asian monsoon at various timescales, we present a modern analog. Various climatic data, monsoon indices, and circulation factor calculations were used to identify the variabilities and controlling factors of the modern East Asian summer and winter monsoons. Paleo-climatic proxies from a region sensitive to both summer and winter monsoons were used in concert with monsoon simulation data to reconstruct and analyze paleo-monsoon variations and mechanisms. Results showed that the weakening of the Holocene Asian summer and winter monsoons is closely linked to low-latitude summer insolation and mid-latitude winter insolation, while modern summer and winter monsoons are related to global circulation, sea surface temperature, and sea ice change. We confirm that the driving mechanism of the monsoon was dependent on timescale.

One-Month-Lead Predictability of Asian Summer Monsoon Indices Based on the Zonal Winds by the APCC Multimodel Ensemble

2018 ◽  
Vol 31 (21) ◽  
pp. 8945-8960 ◽  
Author(s):  
Hye-Jin Park ◽  
Vladimir N. Kryjov ◽  
Joong-Bae Ahn
Keyword(s):  
Summer Monsoon ◽  
Asian Summer Monsoon ◽  
World Ocean ◽  
Prediction Skill ◽  
Asia Pacific ◽  
South Asian Summer Monsoon ◽  
Multimodel Ensemble ◽  
Asian Summer ◽  
Monsoon Indices ◽  
Sst Anomalies

The seasonal predictability of Asian summer monsoon indices characterizing horizontal and vertical zonal wind shear is investigated using 1-month-lead hindcast datasets from seven coupled global circulation models (CGCMs) participating in the operational multimodel ensemble (MME) seasonal prediction system of the Asia–Pacific Economic Cooperation Climate Center (APCC) for the 1983–2010 period. The summer monsoon indices analyzed in this study represent the South Asian summer monsoon (SASM), western North Pacific summer monsoon (WNPSM), and the newly defined northeastern Asian summer monsoon (NEASM). For the WNPSM and NEASM indices, we also analyze the prediction skill of the index components separately. The study demonstrates that the operational APCC MME system reliably predicts most of the summer monsoon indices and their components, with correlation coefficients exceeding the 99% confidence level. Analysis of the ocean sources of the prediction skill of the indices reveals that the strong relationships of most of the monsoon indices and their components with sea surface temperature (SST) are not confined to the equatorial Pacific but rather are dispersed throughout the World Ocean, with the leading role played by the north Indian Ocean SST anomalies. This conclusion is supported by the analysis of correlations between the monsoon indices and the tropical SST indices. The correlations between the SST anomalies and all the summer monsoon indices in the MME predictions are stronger than those in the observations. However, overestimation of the role of the ENSO-related SST anomalies in the seasonal model hindcasts results in some predictability deterioration of the SASM and NEASM indices.

scholarly journals South American monsoon indices

2005 ◽  
Vol 6 (4) ◽  
pp. 219-223 ◽  
Author(s):  
Manoel A. Gan ◽  
Vadlamudi B. Rao ◽  
Marley C. L. Moscati
Keyword(s):  
South American ◽  
South American Monsoon ◽  
Monsoon Indices

scholarly journals Summer monsoon indices on June rainfall in Hong Kong and its vicinity

2016 ◽  
Vol 30 (5) ◽  
pp. 789-799
Author(s):  
Man-chi Wu ◽  
Hang-wai Tong ◽  
Tsz-cheung Lee
Keyword(s):  
Hong Kong ◽  
Summer Monsoon ◽  
Monsoon Indices
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