Features and interdecadal variability of droughts in the homogeneous rainfall zones over the East Asian monsoon region

2015 ◽  
Vol 36 (4) ◽  
pp. 1943-1953 ◽  
Author(s):  
Jehangir Ashraf Awan ◽  
Deg-Hyo Bae
Keyword(s):  
Asian Monsoon ◽  
East Asian Monsoon ◽  
East Asian ◽  
Interdecadal Variability ◽  
Monsoon Region ◽  
Asian Monsoon Region

scholarly journals The evolution of sub-monsoon systems in the Afro-Asian monsoon region during the Holocene – comparison of different transient climate model simulations

2014 ◽  
Vol 10 (3) ◽  
pp. 2293-2353 ◽  
Author(s):  
A. Dallmeyer ◽  
M. Claussen ◽  
N. Fischer ◽  
K. Haberkorn ◽  
S. Wagner ◽  
...  
Keyword(s):  
Asian Monsoon ◽  
Climate Model ◽  
East Asian Monsoon ◽  
East Asian ◽  
Precipitation Trend ◽  
Monsoon Region ◽  
North African ◽  
Asian Monsoon Region ◽  
The Holocene ◽  
Climate Model Simulations

Abstract. The recently proposed global monsoon hypothesis interprets monsoon systems as part of one global-scale atmospheric overturning circulation, implying a connection between the regional monsoon systems and an in-phase behaviour of all northern hemispheric monsoons on annual timescales (Trenberth et al., 2000). Whether this concept can be applied to past climates and variability on longer timescales is still under debate, because the monsoon systems exhibit different regional characteristics such as different seasonality (i.e. onset, peak, and withdrawal). To investigate the interconnection of different monsoon systems during the pre-industrial Holocene, five transient global climate model simulations have been analysed with respect to the rainfall trend and variability in different sub-domains of the Afro-Asian monsoon region. Our analysis suggests that on millennial timescales with varying orbital forcing, the monsoons do not behave as a tightly connected global system. According to the models, the Indian and North African monsoons are coupled, showing similar rainfall trend and moderate correlation in rainfall variability in all models. The East Asian monsoon changes independently during the Holocene. The dissimilarities in the seasonality of the monsoon sub-systems lead to a stronger response of the North African and Indian monsoon systems to the Holocene insolation forcing than of the East Asian monsoon and affect the seasonal distribution of Holocene rainfall variations. Within the Indian and North African monsoon domain, precipitation solely changes during the summer months, showing a decreasing Holocene precipitation trend. In the East Asian monsoon region, the precipitation signal is determined by an increasing precipitation trend during spring and a decreasing precipitation change during summer, partly balancing each other. A synthesis of reconstructions and the model results do not reveal an impact of the different seasonality on the timing of the Holocene rainfall optimum in the different sub-monsoon systems. They rather indicate locally inhomogeneous rainfall changes and show, that single palaeo-records should not be used to characterise the rainfall change and monsoon evolution for entire monsoon sub-systems.

scholarly journals Heterodynes dominate precipitation isotopes in the East Asian monsoon region, reflecting interaction of multiple climate factors

2016 ◽  
Vol 455 ◽  
pp. 196-206 ◽  
Author(s):  
Elizabeth K. Thomas ◽  
Steven C. Clemens ◽  
Youbin Sun ◽  
Warren L. Prell ◽  
Yongsong Huang ◽  
...  
Keyword(s):  
Asian Monsoon ◽  
East Asian Monsoon ◽  
East Asian ◽  
Climate Factors ◽  
Monsoon Region ◽  
Asian Monsoon Region
Sign in / Sign up

Export Citation Format

Share Document