Atmospheric Variability in East Asian Winter Monsoon

The East Asian winter monsoon represents a major component of the regional climate, driven by the large thermal contrast between the Siberian landmass and the adjacent oceanic regions. Its variability manifests through fluctuations in the strength and position of cold surges, the intensity of the Siberian High and the pattern of upper-level jet streams. These dynamics govern temperature anomalies, precipitation distribution and the frequency of extreme weather events across East Asia. On interannual timescales, remote influences from modes such as the Arctic Oscillation and Pacific Decadal Oscillation modulate monsoon circulation via wave trains and teleconnection patterns. Decadal and longer variations arise from changes in sea surface temperature distributions, particularly in the North Pacific, and from evolving external forcings such as greenhouse gas concentrations. A comprehensive understanding of these interacting drivers is essential for improving seasonal forecasts, managing water resources and adapting energy systems to changing wind regimes.

Research from Nature Portfolio

A long-term analysis of wind energy potential over China has revealed a secular decline in generation prospects since the late 1970s, attributable to warming around the Siberian High. This study demonstrates that interannual variability linked to the Pacific Decadal Oscillation and the Arctic Oscillation can explain much of the year-to-year fluctuation in wind power potential. By incorporating these climate indices into a statistical model, researchers have shown that improved forecasting of oscillation phases could enhance the planning and management of wind energy infrastructure, illustrating a direct application of monsoon variability research to renewable energy strategies.

Atmospheric Variability in East Asian Winter Monsoon publication trend

The graph below shows the total number of articles in atmospheric variability in east asian winter monsoon across all publications each year (not limited to Nature Index journals).

Technical terms

East Asian winter monsoon: Seasonal wind system characterised by cold, northerly flows from Siberia toward East Asia during boreal winter.

Siberian High: A persistent high-pressure system over Siberia that strengthens cold surges into East Asia.

Arctic Oscillation: A large-scale mode of atmospheric pressure variability that influences mid-latitude weather through shifting pressure patterns.

Pacific Decadal Oscillation: A long-lived pattern of Pacific sea surface temperature anomalies that affects atmospheric circulation on decadal scales.

Rossby wave: Planetary-scale atmospheric waves that propagate energy and influence weather and climate teleconnections.

References

1. Wind-generated Electricity in China: Decreasing Potential, Inter-annual Variability and Association with Changing Climate. Scientific Reports (2017).
2. Emergent constraints on the future East Asian winter surface air temperature changes. Environmental Research Letters (2024).
3. Interannual impact of the Victoria mode on the winter-spring surface air temperature over Eurasia and North America. npj Climate and Atmospheric Science (2023).
4. The roles of global warming and Arctic Oscillation in the winter 2020 extremes in East Asia. Environmental Research Letters (2022).