Interaction between the Black Carbon Aerosol Warming Effect and East Asian Monsoon

2020 ◽  
Author(s):  
Bingliang Zhuang ◽  
Tijian Wang ◽  
Shu Li ◽  
Min Xie ◽  
Mengmeng Li ◽  
...  
Keyword(s):  
East Asia ◽  
Black Carbon ◽  
South China ◽  
Radiative Forcing ◽  
Asian Monsoon ◽  
Meridional Circulation ◽  
East Asian Monsoon ◽  
Regional Climate ◽  
East Asian ◽  
Black Carbon Aerosol

<p>Black carbon aerosol (BC) has a significant influence on regional climate changes due to its warming effect. Such changes will feedback to BC loadings. Here, the interactions between the BC warming effect and East Asian monsoon (EAM) in both winter (EAWM) and summer (EASM) are investigated using a regional climate model RegCM4, which essentially captures the EAM features and the BC variations in China. The seasonal mean BC optical depth is 0.021 over East Asia during winter, which is 10.5% higher than that during summer. Nevertheless, the BCs direct radiative forcing is 32% stronger during summer (+1.85 W/m<sup>2</sup>). The BC direct effect would induce lower air to warm by 0.11-0.12 K, which causes an meridional circulation anomaly associated with a cyclone at 20-30 <sup>o</sup>N and southerly anomalies at 850 hPa over East Asia. Consequently, the EAM circulation is weakened during winter but enhanced during summer. Precipitation is likely increased, especially in south China during summer (by 3.73%). Compared to BC changes due to EAM interannual variations, BC changes due to its warming effect are as important, but weaker. BC surface concentrations are decreased by 1~3% during both winter and summer, by 1~3%, while the columnar BC is increased in south China during winter. During the strongest monsoon years, the BC loadings are higher at lower latitudes than those during the weakest years, resulting in more southerly meridional circulation anomalies and BC feedbacks during both winter and summer. However, the interactions between the BC warming effect and EAWM/EASM are more intense during the weakest monsoon years.</p>

Interaction between the Black Carbon Aerosol Warming Effect and East Asian Monsoon Using RegCM4

2018 ◽  
Vol 31 (22) ◽  
pp. 9367-9388 ◽  
Author(s):  
B. L. Zhuang ◽  
S. Li ◽  
T. J. Wang ◽  
J. Liu ◽  
H. M. Chen ◽  
...  
Keyword(s):  
East Asia ◽  
Black Carbon ◽  
Radiative Forcing ◽  
Asian Monsoon ◽  
Meridional Circulation ◽  
East Asian Monsoon ◽  
Southern China ◽  
Regional Climate ◽  
East Asian ◽  
Black Carbon Aerosol

AbstractBlack carbon aerosol (BC) has a significant influence on regional climate changes because of its warming effect. Such changes will feed back to BC loadings. Here, the interactions between the BC warming effect and the East Asian monsoon (EAM) in both winter (EAWM) and summer (EASM) are investigated using a regional climate model, RegCM4, that essentially captures the EAM features and the BC variations in China. The seasonal mean BC optical depth is 0.021 over East Asia during winter, which is 10.5% higher than that during summer. Nevertheless, the BC direct radiative forcing is 32% stronger during summer (+1.85 W m−2). The BC direct effect would induce lower air to warm by 0.11–0.12 K, which causes a meridional circulation anomaly associated with a cyclone at 20°–30°N and southerly anomalies at 850 hPa over East Asia. Consequently, the EAM circulation is weakened during winter but enhanced during summer. Precipitation is likely increased, especially in southern China during summer (by 3.73%). Relative to BC changes that result from EAM interannual variations, BC changes from its warming effect are as important but are weaker. BC surface concentrations are decreased by 1%–3% during both winter and summer, whereas the columnar BC is increased in south China during winter. During the strongest monsoon years, the BC loadings are higher at lower latitudes than those during the weakest years, resulting in more southerly meridional circulation anomalies and BC feedbacks during both winter and summer. However, the interactions between the BC warming effect and EAWM/EASM are more intense during the weakest monsoon years.

Late Quaternary coccolith records in the South China Sea and East Asian monsoon dynamics

2013 ◽  
Vol 111 ◽  
pp. 88-96 ◽  
Author(s):  
Xiang Su ◽  
Chuanlian Liu ◽  
Luc Beaufort ◽  
Jun Tian ◽  
Enqing Huang
Keyword(s):  
South China Sea ◽  
South China ◽  
Asian Monsoon ◽  
East Asian Monsoon ◽  
Late Quaternary ◽  
East Asian ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Monsoon Dynamics

scholarly journals Integrating the InVEST and SDSM Model for Estimating Water Provision Services in Response to Future Climate Change in Monsoon Basins of South China

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3199
Author(s):  
Dong Yang ◽  
Wen Liu ◽  
Chaohao Xu ◽  
Lizhi Tao ◽  
Xianli Xu
Keyword(s):  
Climate Change ◽  
South China ◽  
Asian Monsoon ◽  
East Asian Monsoon ◽  
East Asian ◽  
Future Climate ◽  
Future Climate Change ◽  
Annual Average ◽  
Invest Model ◽  
Water Provision

An assessment of how future climate change will impact water provision services is important for formulating rational water resources management and development strategies as well as for ecosystem protection. The East Asian monsoon is an important component of the Asian climate and its changes affect the climate in East Asia and seriously affect the provision of water services. In this study, through the coupling of the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model and Statistical Downscaling Technique Model (SDSM), we evaluated the impact of future climate change on water provisions in a typical East Asian monsoon basin of South China. The results demonstrate the applicability of the InVEST model combined with the SDSM model over the East Asian monsoon river basins. Under representative concentration pathway 4.5 scenario (RCP4.5), the annual average maximum and minimum temperatures would continually increase far into the future (2080–2095). However, the maximum and minimum temperatures slightly decreased under representative concentration pathway 2.6 scenario (RCP2.6) in the far future (2080–2095). The annual average precipitation and reference evapotranspiration experienced slight but steady increasing trends under the RCP2.6 and RCP4.5 scenarios. Based on the InVEST model simulation, annual average water yield would increase by 19.3% (33.5%) far in the future (2080–2095) under RCP2.6 (4.5) scenario. This study provides a valuable reference for studying future climate change impacts on water provisions in East Asian monsoon basins.

Coupling of South and East Asian Monsoon Precipitation in July–August*

2015 ◽  
Vol 28 (11) ◽  
pp. 4330-4356 ◽  
Author(s):  
Jesse A. Day ◽  
Inez Fung ◽  
Camille Risi
Keyword(s):  
East Asia ◽  
South Asia ◽  
Bay Of Bengal ◽  
Moisture Transport ◽  
Asian Monsoon ◽  
East Asian Monsoon ◽  
Southern China ◽  
East Asian ◽  
Monsoon Circulation ◽  
Yunnan Plateau

Abstract The concept of the “Asian monsoon” masks the existence of two separate summer rainfall régimes: convective storms over India, Bangladesh, and Nepal (the South Asian monsoon) and frontal rainfall over China, Japan, and the Korean Peninsula (the East Asian monsoon). In addition, the Himalayas and other orography, including the Arakan Mountains, Ghats, and Yunnan Plateau, create smaller precipitation domains with abrupt boundaries. A mode of continental precipitation variability is identified that spans both South and East Asia during July and August. Point-to-point correlations and EOF analysis with Asian Precipitation–Highly-Resolved Observational Data Integration Toward Evaluation of the Water Resources (APHRODITE), a 57-yr rain gauge record, show that a dipole between the Himalayan foothills (+) and the “monsoon zone” (central India, −) dominates July–August interannual variability in South Asia, and is also associated in East Asia with a tripole between the Yangtze corridor (+) and northern and southern China (−). July–August storm tracks, as shown by lag–lead correlation of rainfall, remain mostly constant between years and do not explain this mode. Instead, it is proposed that interannual change in the strength of moisture transport from the Bay of Bengal to the Yangtze corridor across the northern Yunnan Plateau induces widespread precipitation anomalies. Abundant moisture transport along this route requires both cyclonic monsoon circulation over India and a sufficiently warm Bay of Bengal, which coincide only in July and August. Preliminary results from the LMDZ version 5 (LMDZ5) model, run with a zoomed grid over Asia and circulation nudged toward the ECMWF reanalysis, support this hypothesis. Improved understanding of this coupling may help to project twenty-first-century precipitation changes in East and South Asia, home to over three billion people.

scholarly journals Impacts of the East Asian monsoon on lower tropospheric ozone over coastal South China

2013 ◽  
Vol 8 (4) ◽  
pp. 044011 ◽  
Author(s):  
Derong Zhou ◽  
Aijun Ding ◽  
Huiting Mao ◽  
Congbin Fu ◽  
Tao Wang ◽  
...  
Keyword(s):  
South China ◽  
Tropospheric Ozone ◽  
Asian Monsoon ◽  
East Asian Monsoon ◽  
East Asian
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