scholarly journals Indian Monsoon Depression: Climatology and Variability

10.5772/37917 ◽  
2012 ◽  
Author(s):  
Jin-Ho Yoon ◽  
Wan-Ru Judy
Keyword(s):  
Indian Monsoon ◽  
Monsoon Depression

scholarly journals Westward propagation of the Indian monsoon depression

2005 ◽  
Vol 57 (5) ◽  
pp. 758-769 ◽  
Author(s):  
Tsing-Chang Chen ◽  
Jin-Ho Yoon ◽  
Shih-Yu Wang
Keyword(s):  
Indian Monsoon ◽  
Monsoon Depression

Westward propagation of the Indian monsoon depression

2005 ◽  
Vol 57 (5) ◽  
pp. 758-769 ◽  
Author(s):  
TSING-CHANG CHEN ◽  
JIN-HO YOON ◽  
SHIH-YU WANG
Keyword(s):  
Indian Monsoon ◽  
Monsoon Depression

Modeling of Indian monsoon extremes during 850-2000AD using the proxy-data from speleothems

2021 ◽  
Author(s):  
Pramod Kumar ◽  
Ashok Priyadarshan Dimri ◽  
Sampat Kumar Tandon
Keyword(s):  
Indian Monsoon ◽  
Proxy Data

scholarly journals Subseasonal Forecasts of the Northern Queensland Floods of February 2019: Causes and Forecast Evaluation

Atmosphere ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 758
Author(s):  
Wayne Yuan-Huai Tsai ◽  
Mong-Ming Lu ◽  
Chung-Hsiung Sui ◽  
Yin-Min Cho
Keyword(s):  
Large Scale ◽  
Deep Convection ◽  
Austral Summer ◽  
Rainfall Event ◽  
Monsoon Depression ◽  
Forecast Skill ◽  
Sea Surface ◽  
Central Pacific ◽  
Percentile Rank ◽  
Extended Range

During the austral summer 2018/19, devastating floods occurred over northeast Australia that killed approximately 625,000 head of cattle and inundated over 3000 homes in Townsville. In this paper, the disastrous event was identified as a record-breaking subseasonal peak rainfall event (SPRE). The SPRE was mainly induced by an anomalously strong monsoon depression that was modulated by the convective phases of an MJO and an equatorial Rossby (ER) wave. The ER wave originated from an active equatorial deep convection associated with the El Niño warm sea surface temperatures near the dateline over the central Pacific. Based on the S2S Project Database, we analyzed the extended-range forecast skill of the SPRE from two different perspectives, the monsoon depression represented by an 850-hPa wind shear index and the 15-day accumulated precipitation characterized by the percentile rank (PR) and the ratio to the three-month seasonal (DJF) totals. The results of four S2S models of this study suggest that the monsoon depression can maintain the same level of skill as the short-range (3 days) forecast up to 8–10 days. For precipitation parameters, the conclusions are similar to the monsoon depression. For the 2019 northern Queensland SPRE, the model forecast was, in general, worse than the expectation derived from the hindcast analysis. The clear modulation of the ER wave that enhanced the SPRE monsoon depression circulation and precipitation is suspected as the main cause for the lower forecast skill. The analysis procedure proposed in this study can be applied to analyze the SPREs and their associated large-scale drivers in other regions.

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